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Posted: 9/24/2019 9:18:20 PM EDT
[#1]
Update 9/24
Marvin is making headway.  
We have a trim making method that is working well, that we wil cover the seams with. 
The mounting bracket is also finished and installed on his rocket. We need to get the Vortex spotting scope mount created now. 
CAD delivered our nose cone parts today and we got it assembled. We realized we forgot to add in the 45 degree angle for the corner.  Students have already begun cutting away the angles so it fits properly into the corner space.
Finally, CAD and Robotics came up with a solution for the tread making. They sprung this on me(I'm very happy to see them taking the initiative and solving something like this on their own. It means they are taking on more responsibility which is awesome!) They want me to try pouring or spraying expanding foam into this mold. We wil try using some resist of some sort and see if it works. If it does they will make more molds and we will try to make them in mass. 
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Posted: 9/24/2019 9:19:06 PM EDT
[#2]
Quote HistoryOriginally Posted By Leisure_Shoot:
I assume you could create a group print here, to get what you need printed and shipped to you by ARF members. (print about 30% extra, so you can throw away the poorer quality ones that you receive) Quote HistoryOriginally Posted By Leisure_Shoot:
Originally Posted By guns762:
Update 9/23 We got our first nose cone, and found a nice surprise. It will work for both our SpaceX Starship, and Marvin's rocket. We just need to add a spire for the front and use a second for the rear. Print time was 4hrs. We found the tractor treads would need to number about 330? Or something rediculous like that. That is obviously not possible for our 3D printers so we will probably have to reevaluate our approach. https://i.imgur.com/ld68rjI.jpg We have a new direction on Marvin's head. We are going to carve out the center and add a smaller sphere inside. The rest of the work today was more shelf texture, and wall painting, so not very exciting. I also had a few key players gone today, antelope hunting. https://i.imgur.com/cKG60l5.jpg https://i.imgur.com/DVPJZrA.jpg (print about 30% extra, so you can throw away the poorer quality ones that you receive) |
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Posted: 9/24/2019 9:20:23 PM EDT
[#3]
Quote HistoryOriginally Posted By redoubt:
Maybe cast them in silicone. Then they'd be flexible and easy to link. I don't know about the weight though. Quote HistoryOriginally Posted By redoubt:
Originally Posted By guns762:
Originally Posted By notso:
Originally Posted By guns762:
Update 9/23 We found the tractor treads would need to number about 330? Or something rediculous like that. That is obviously not possible for our 3D printers so we will probably have to reevaluate our approach. 
Should be light! We might install wire in them, so they are easier to pull out. |
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Posted: 9/24/2019 11:53:49 PM EDT
[#4]
Quote HistoryOriginally Posted By guns762:
I'm not sure how the foam will go, but we will soon find out.
Should be light! We might install wire in them, so they are easier to pull out. Quote HistoryOriginally Posted By guns762:
Originally Posted By redoubt:
Originally Posted By guns762:
Originally Posted By notso:
Originally Posted By guns762:
Update 9/23 We found the tractor treads would need to number about 330? Or something rediculous like that. That is obviously not possible for our 3D printers so we will probably have to reevaluate our approach.
Should be light! We might install wire in them, so they are easier to pull out. https://smile.amazon.com/Model-Pro-Casting-Gallon-Kit-Polyurethane/dp/B007271IQY Model-Pro Polyurethane Casting Resin Liquid Plastic for Making Models and Crafts - 1 Gallon Kit There's a bunch of places selling various casting materials, I don't know what sort of size it will be, what weight it will need to support/stresses/fragility, etc. So that is the least dense 'general purpose' resin I found, and they don't have it on Prime, but it doesn't loo cheap, $30/ quart in quart kits, $67 for the gallon kit. |
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Posted: 9/25/2019 11:01:42 AM EDT
[Last Edit: hoosierhick]
[#5]
Quote HistoryOriginally Posted By guns762: I'm not sure how the foam will go, but we will soon find out.
Should be light! We might install wire in them, so they are easier to pull out. |
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Posted: 9/25/2019 11:16:16 AM EDT
[#6]
Quote HistoryOriginally Posted By hoosierhick: You may need to do some prep work to the inside of your mold, too. I can see the foam hanging on to the layer lines from the print and not letting go easily. |
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Posted: 9/25/2019 5:05:55 PM EDT
[#7]
simple sanding...
or cover it in bondo ... let dry ... and less sanding... should do it. |
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Posted: 9/25/2019 5:16:48 PM EDT
[#8]
Maybe a release agent like this:
https://www.smooth-on.com/products/ease-release-2831/ |
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Posted: 9/25/2019 9:20:47 PM EDT
[#9]
Update 9/25
I've got a student ready to experiment with the casting. Maybe tomorrow. The Starship nose cone is now shaped to fit in the corner. We also began skinning the bottom portion of the cone. 
Marvins rocket is progressing well. We have the a Vortex spotting scope mount assembled. 
The wall mount also is compete and we began skinning the back end, although this will need to be reworked a bit. 
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Posted: 9/25/2019 10:14:30 PM EDT
[#10]
Quote HistoryOriginally Posted By guns762:
Update 9/25 I've got a student ready to experiment with the casting. Maybe tomorrow. The Starship nose cone is now shaped to fit in the corner. We also began skinning the bottom portion of the cone. https://i.imgur.com/8IFFMpG.jpg Marvins rocket is progressing well. We have the a Vortex spotting scope mount assembled. https://i.imgur.com/eLzIPFY.jpg The wall mount also is compete and we began skinning the back end, although this will need to be reworked a bit. https://i.imgur.com/bhr1kLT.jpg 
Awesome support from the company, only thing that tops it would be something like the President writing you a letter. |
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Posted: 9/26/2019 12:25:00 AM EDT
[#11]
 Why does Starship only have 2 rear fins?! |
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Posted: 9/26/2019 10:04:29 AM EDT
[#12]
Quote HistoryOriginally Posted By brass: Maybe if you color this one with a crayon all parties might be appeased?
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Posted: 9/27/2019 10:48:27 AM EDT
[#13]
We got a very nice letter from Jo Ann in Florida last night. She follows along here on ARFCOM. It contained a check for $150!
Thank you Jo Ann! 
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Posted: 9/27/2019 12:07:15 PM EDT
[#14]
Update 9/27
Earth Clock is quickly taking shape. I'm impressed with the clouds so far. It is homecoming week, so many kids are dressed up for the dress up days.
Marvin's rocket needed one more bulkhead. They cut it out with a jigsaw, and then used this method to correct their shape. The belt sander is awesome.
Skinning Marvin's rocket has again started over. 
Marvin's head and helmet. 
Marvin's body, and the nose cone of our SpaceX Starship. 
Our Powell farm landscape is getting some details now. Layout, 
Determining what is the best material to represent barley. 
Field layout. 
Once installed, we will begin straightening the blades of grass with the heat guns, then we will trim to the proper scale. Eventually, we will paint, and add weeds on the edges. A pivot system, grain silos, and oil wells will also make appearances down the road. 
The murals got some light blue base coat yesterday. We will begin fading the colors together soon. 
We've been following the SpaceX thread also, and students studied these images this morning. They will be great references when we get to those details. 
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Posted: 9/27/2019 12:40:14 PM EDT
[#15]
Quote HistoryOriginally Posted By guns762:
Update 9/27 >SNIP< We've been following the SpaceX thread also, and students studied these images this morning. They will be great references when we get to those details.
Those wrinkles. Wow. Looks like your kids can do a better job than they did, Guns.
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Posted: 9/27/2019 1:00:18 PM EDT
[#16]
It's nice to see the Football coach is part of this project. But how do the football players feel about running around the holes in the field??
 EBR |
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Posted: 9/27/2019 1:49:33 PM EDT
[#17]
Quote HistoryOriginally Posted By EBR666:
It's nice to see the Football coach is part of this project. But how do the football players feel about running around the holes in the field?? EBR
We acquired extra turf two years ago from the field-house storage. We used a big piece under our Unicorn display at State Art.
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Posted: 9/27/2019 4:00:53 PM EDT
[Last Edit: guns762]
[#18]
Update 9/27.2
"Marvin" is going elk hunting this weekend. Our Marvin isn't quite finished, but students brought in a surrogate to spot and guide one of our students on this weekends elk hunt. He promised me they would both come back in one piece with lots of pictures.
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Posted: 9/27/2019 7:04:31 PM EDT
[#19]
Quote HistoryOriginally Posted By guns762:
Update 9/27.2 "Marvin" is going elk hunting this weekend. Our Marvin isn't quite finished, but students brought in a surrogate to spot and guide one of our students on this weekends elk hunt. He promised me they would both come back in one piece with lots of pictures.
https://i.imgur.com/i6pwSnw.jpg |
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Posted: 9/27/2019 7:09:25 PM EDT
[#20]
Quote HistoryOriginally Posted By brass: Where's the helmet? I was expecting a Roman Centurion style helmet?!?  The student that brought it in said it was about 20yrs old.
Ours is going to have a glorious helmet. 
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Posted: 9/27/2019 7:18:52 PM EDT
[#21]
The belt sander technique.
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Posted: 9/30/2019 9:18:49 AM EDT
[#22]
Update 9/30
Kind of forgot to do the weekend update.
The nose cone on our Starship is looking pretty sharp. We are going to try a new method, suggested by many of you over the years; we are going to bondo the seams and sand them to get a smoother transition between skin plates. 
This guy has lots of experience skinning these kinds of projects, and thinks we can make that work well. We might see today! 
 Students have also been working on making the details for the rest of SpaceX Super Heavy. 
Marvin's rocket is getting more skin. 
For Mars we've started collecting bottles that we might be able to help show colonization in the future. 
For our Powell Farm scene, we are going to use antelope and buffalo hair, along with probably fox hair to create common natural grasses and weeds along the edges of the field. 
Students used the heat gun to help straighten the turf before cutting to the desired height. 
You can see the enthusiasm on Homecoming Friday for cutting this with scissors.
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Posted: 9/30/2019 12:23:40 PM EDT
[#23]
"Now, remember, kids, if you go to barber college, you can stand and do this every day for 30 years. Sometimes the hair will be just as green, sometimes, not."
Nice to see the progress. (Did Marvin get his elk yet?)
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Posted: 9/30/2019 12:31:04 PM EDT
[#24]
Quote HistoryOriginally Posted By Mak_380:
"Now, remember, kids, if you go to barber college, you can stand and do this every day for 30 years. Sometimes the hair will be just as green, sometimes, not." Nice to see the progress. (Did Marvin get his elk yet?) 
The week of the 15th and Nov 1st will be equally possessive of my students, due to seasons opening. |
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Posted: 9/30/2019 1:34:39 PM EDT
[#25]
Quote HistoryOriginally Posted By guns762:
Marvin and his hunter are still in elk camp this morning. I think they might be there all week. I've got a whole bunch of elk hunters gone today.
The week of the 15th and Nov 1st will be equally possessive of my students, due to seasons opening. Quote HistoryOriginally Posted By guns762:
Originally Posted By Mak_380:
"Now, remember, kids, if you go to barber college, you can stand and do this every day for 30 years. Sometimes the hair will be just as green, sometimes, not." Nice to see the progress. (Did Marvin get his elk yet?)
The week of the 15th and Nov 1st will be equally possessive of my students, due to seasons opening. |
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Posted: 9/30/2019 4:45:04 PM EDT
[#26]
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Posted: 9/30/2019 5:00:44 PM EDT
[#27]
Quote HistoryOriginally Posted By Mal_means_bad:
You could film students doing Mars colonist tasks on a simple full scale set and mount old smartphones/tablets inside of large to mid scale models to populate them with live action video. This would be similar to a technique used in many pre-CGI movies of mounting a rear-projection screen inside a miniature, such as the distant shots of Kirk and Scotty in the spacepod in Star Trek The Motion Picture, see 3:42 and 6:09: Subbed, in, looking forward to the journey! Also, still reading through, what happened to the unicorn? |
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Posted: 9/30/2019 6:47:39 PM EDT
[#28]
Quote HistoryI missed this! Now have my boarding pass. Marvin needs one!
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Posted: 9/30/2019 6:54:14 PM EDT
[Last Edit: kpel308]
[#29]
@Guns762
Just in case he didn't have one, I used your ARFCOM email to get him one using the Powell, WY ZIP code. Here it is: 
(Only did it as the deadline is just a few hours from now. No, I did not sign you up for gay Martian porn. )
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Posted: 9/30/2019 8:50:28 PM EDT
[#30]
Quote HistoryOriginally Posted By kpel308:
@Guns762 Just in case he didn't have one, I used your ARFCOM email to get him one using the Powell, WY ZIP code. Here it is: https://www.AR15.Com/media/mediaFiles/1232/BoardingPass_MyNameOnMars2020__1_-1108149.png (Only did it as the deadline is just a few hours from now. No, I did not sign you up for gay Martian porn. )
Thank you!!! I'll print these, and we will try to find a spot for it.
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Posted: 9/30/2019 9:16:54 PM EDT
[#31]
Update 9/30
Well, if Marvin has a 2020 boarding pass, we better get his rocket done.
Future in fencing?
We gave up trying to center the tail without a center rod. It just wasn't happening. 
Tomorrow we will sand the bondo a bit and fit it a bit better.  More work on the SpaceX Starship nose cone. 
Top of the booster portion is also getting detailed. 
Fitting an envirodome to the Martian top shelf. 
Our barley field is getting closer to the correct size. Students want a "Mars Barley" brand name/logo for the grain silos.
I told our Earth clock artist we needed a bit of cleaning up Florida and the Baja peninsula or there would be some angry Floridians.
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Posted: 9/30/2019 9:22:13 PM EDT
[Last Edit: brass]
[#32]
Quote HistoryOriginally Posted By guns762:
Update 9/30 Well, if Marvin has a 2020 boarding pass, we better get his rocket done.
https://i.imgur.com/Xqy45DB.jpg https://i.imgur.com/mL5Prox.jpg Future in fencing?
https://i.imgur.com/eWgrAUj.jpg We gave up trying to center the tail without a center rod. It just wasn't happening. https://i.imgur.com/eKh2Klq.jpg https://i.imgur.com/jPQ62gO.jpg Tomorrow we will sand the bondo a bit and fit it a bit better. https://i.imgur.com/dzeMDsl.jpg More work on the SpaceX Starship nose cone. https://i.imgur.com/Q4Tt8jz.jpg Top of the booster portion is also getting detailed. https://i.imgur.com/myERfMb.jpg https://i.imgur.com/N8PM2KC.jpg Fitting an envirodome to the Martian top shelf. https://i.imgur.com/gFjEeUy.jpg Our barley field is getting closer to the correct size. Students want a "Mars Barley" brand name/logo for the grain silos.
https://i.imgur.com/5d9Ef3I.jpg I told our Earth clock artist we needed a bit of cleaning up Florida and the Baja peninsula or there would be some angry Floridians.
https://i.imgur.com/g5eqLN1.jpg Save yourself HOURS with one of these: 
Right after the putty "kicks" (usually 15-20 minutes), you use a "cheese grater" style wood rasp (or an actual cheese grater, your preference), or knife, to to the BULK of the removal. It's a rock after a day and sanding will be extremely dusty and laborious. It can never be applied perfectly smoothly, but if you hit it with the rasp in the state where it just starts getting warm, + 30 seconds (as soon as fingernail doesn't leave a mark, do that test on an area that's bulging out), Then go at it with the cheese grater / drywall rasp, whatever your word for it is. Doesn't clog up the grater as it snaps right out of it when cured, and you're only there 5 minutes and done. I suppose I should have posted this advice earlier, well, I did (in a previous year), but I mean, in this thread. --ETA: BONUS PART of this method: You don't have to worry about "putting too much on since you have to sand it off". That method usually leaves low spots which need another coat then, while doing it quickly with a bit extra, and sloppy, works out great when you can cut it off to smooth as easily as half dried modeling clay. --ETA2: When I say "Thicker" that's relative. Never put more than 1/8" to 3/16" (post sanding) down in one go, it'll cure, shrink, and crack after a few months (but look good for the first couple). So "Lay it on thick" means an extra 1/16" or so, and that's really hard on a compound curve that has no "up/down" as it's 360° coverage, it'll sag in some area. So, try to keep it under 1/4-3/8" pre-cheese grater. You'd be insane to go 1/4" if sanding it off after a day (post full cure). |
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Posted: 9/30/2019 9:22:45 PM EDT
[Last Edit: guns762]
[#33]
Bud beat us to it? ???
https://www.thedrinksbusiness.com/2017/11/budweiser-to-send-barley-into-space/ As part of its commitment to be first beer on Mars, Budweiser will send barley into space next month in order to study how one of beer’s key ingredients responds to microgravity environments. |
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Posted: 9/30/2019 9:26:38 PM EDT
[#34]
Quote HistoryOriginally Posted By brass: @guns762 NOOO!!! Save yourself HOURS with one of these: https://i.imgur.com/iAJPrcI.jpg Right after the putty "kicks" (usually 15-20 minutes), you use a "cheese grater" style wood rasp (or an actual cheese grater, your preference), or knife, to to the BULK of the removal. It's a rock after a day and sanding will be extremely dusty and laborious. It can never be applied perfectly smoothly, but if you hit it with the rasp in the state where it just starts getting warm, + 30 seconds (as soon as fingernail doesn't leave a mark, do that test on an area that's bulging out), Then go at it with the cheese grater / drywall rasp, whatever your word for it is. Doesn't clog up the grater as it snaps right out of it when cured, and you're only there 5 minutes and done. I suppose I should have posted this advice earlier, well, I did (in a previous year), but I mean, in this thread. --ETA: BONUS PART of this method: You don't have to worry about "putting too much on since you have to sand it off". That method usually leaves low spots which need another coat then, while doing it quickly with a bit extra, and sloppy, works out great when you can cut it off to smooth as easily as half dried modeling clay.
We have a couple of large wood/horse rasps. I think the student did a decent enough job with his carding that we can get it pretty decent with a bit of sanding. We also have a belt sander.
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Posted: 9/30/2019 9:45:18 PM EDT
[#35]
Loving the progress!
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Posted: 9/30/2019 9:52:47 PM EDT
[#36]
Quote HistoryOriginally Posted By guns762:
We've learned this with taxidermy.
We have a couple of large wood/horse rasps. I think the student did a decent enough job with his carding that we can get it pretty decent with a bit of sanding. We also have a belt sander. Quote HistoryOriginally Posted By guns762:
Originally Posted By brass: @guns762 NOOO!!! Save yourself HOURS with one of these: https://i.imgur.com/iAJPrcI.jpg Right after the putty "kicks" (usually 15-20 minutes), you use a "cheese grater" style wood rasp (or an actual cheese grater, your preference), or knife, to to the BULK of the removal. It's a rock after a day and sanding will be extremely dusty and laborious. It can never be applied perfectly smoothly, but if you hit it with the rasp in the state where it just starts getting warm, + 30 seconds (as soon as fingernail doesn't leave a mark, do that test on an area that's bulging out), Then go at it with the cheese grater / drywall rasp, whatever your word for it is. Doesn't clog up the grater as it snaps right out of it when cured, and you're only there 5 minutes and done. I suppose I should have posted this advice earlier, well, I did (in a previous year), but I mean, in this thread. --ETA: BONUS PART of this method: You don't have to worry about "putting too much on since you have to sand it off". That method usually leaves low spots which need another coat then, while doing it quickly with a bit extra, and sloppy, works out great when you can cut it off to smooth as easily as half dried modeling clay.
We have a couple of large wood/horse rasps. I think the student did a decent enough job with his carding that we can get it pretty decent with a bit of sanding. We also have a belt sander.
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Posted: 9/30/2019 9:57:13 PM EDT
[#37]
Quote HistoryOriginally Posted By brass:
Well, power sanders do change things drastically, however, - Do it in the painting area with a vacuum under the sander. That stuff makes super fine particles that hang in the air for weeks and may not be the best to breathe in, but the dust sure does mess up fresh paint jobs. Quote HistoryOriginally Posted By brass:
Originally Posted By guns762:
Originally Posted By brass: @guns762 NOOO!!! Save yourself HOURS with one of these: https://i.imgur.com/iAJPrcI.jpg Right after the putty "kicks" (usually 15-20 minutes), you use a "cheese grater" style wood rasp (or an actual cheese grater, your preference), or knife, to to the BULK of the removal. It's a rock after a day and sanding will be extremely dusty and laborious. It can never be applied perfectly smoothly, but if you hit it with the rasp in the state where it just starts getting warm, + 30 seconds (as soon as fingernail doesn't leave a mark, do that test on an area that's bulging out), Then go at it with the cheese grater / drywall rasp, whatever your word for it is. Doesn't clog up the grater as it snaps right out of it when cured, and you're only there 5 minutes and done. I suppose I should have posted this advice earlier, well, I did (in a previous year), but I mean, in this thread. --ETA: BONUS PART of this method: You don't have to worry about "putting too much on since you have to sand it off". That method usually leaves low spots which need another coat then, while doing it quickly with a bit extra, and sloppy, works out great when you can cut it off to smooth as easily as half dried modeling clay.
We have a couple of large wood/horse rasps. I think the student did a decent enough job with his carding that we can get it pretty decent with a bit of sanding. We also have a belt sander. |
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Posted: 10/1/2019 4:31:36 AM EDT
[#38]
Great to hear he got a boarding pass
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Posted: 10/2/2019 7:34:21 AM EDT
[#39]
Update 10/2
Design work on our futuristic John Deere is still going slowly, but the cab is starting to take shape. It will replace the front end of the design on the left. 
The details for the top of the booster are looking pretty good. Students are studying the concept drawings of SpaceX Heavy boosters, but they seem to change... a lot.
I'm very proud of how this student has worked the problem with creating Marvin's helmet. It's coming out very nicely. He's got the visor and helmet trim to finish. 
Marvins rocket is also getting close to being fully skinned. We are waiting on the nose cone, spire, and ball. One more thing layer of bondo this morning, and the tail should be ready for fins. 
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Posted: 10/2/2019 3:15:00 PM EDT
[#40]
Quote HistoryOriginally Posted By guns762:
Update 10/2 Design work on our futuristic John Deere is still going slowly, but the cab is starting to take shape. It will replace the front end of the design on the left. https://i.imgur.com/Ec3blW1.jpg The details for the top of the booster are looking pretty good. Students are studying the concept drawings of SpaceX Heavy boosters, but they seem to change... a lot.
https://i.imgur.com/1eqtyYs.jpg https://i.imgur.com/Dvu9Q47.jpg I'm very proud of how this student has worked the problem with creating Marvin's helmet. It's coming out very nicely. He's got the visor and helmet trim to finish. https://i.imgur.com/sEXuAJj.jpg Marvins rocket is also getting close to being fully skinned. We are waiting on the nose cone, spire, and ball. One more thing layer of bondo this morning, and the tail should be ready for fins. https://i.imgur.com/m0o3qL6.jpg Looks like it feathered out perfectly on the nose, could do the entire cone to eliminate the 3D printing resolution lines as well. |
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Posted: 10/2/2019 9:53:40 PM EDT
[#41]
Quote HistoryOriginally Posted By brass:
If you wanted to put the bondo on thicker, such as to mould shapes, get the fiberglass reinforced stuff, but that IS bad to breathe the dust in from. The glaze your using there is talc based, while the fiberglass reinforced can be put on quite a bit thicker, it also leaves the fine dust of floating galss particles when sanded, and isn't as easy to whack off with a cheese grater mid-cure (though it still can be). Usually needs the glaze/fine stuff on top anyway (stuff you're using now) on top of it since the fiberglass doesn't sand perfectly smooth all the time. Looks like it feathered out perfectly on the nose, could do the entire cone to eliminate the 3D printing resolution lines as well. Quote HistoryOriginally Posted By brass:
Originally Posted By guns762:
Update 10/2 Design work on our futuristic John Deere is still going slowly, but the cab is starting to take shape. It will replace the front end of the design on the left. https://i.imgur.com/Ec3blW1.jpg The details for the top of the booster are looking pretty good. Students are studying the concept drawings of SpaceX Heavy boosters, but they seem to change... a lot.
https://i.imgur.com/1eqtyYs.jpg https://i.imgur.com/Dvu9Q47.jpg I'm very proud of how this student has worked the problem with creating Marvin's helmet. It's coming out very nicely. He's got the visor and helmet trim to finish. https://i.imgur.com/sEXuAJj.jpg Marvins rocket is also getting close to being fully skinned. We are waiting on the nose cone, spire, and ball. One more thing layer of bondo this morning, and the tail should be ready for fins. https://i.imgur.com/m0o3qL6.jpg Looks like it feathered out perfectly on the nose, could do the entire cone to eliminate the 3D printing resolution lines as well.
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Posted: 10/2/2019 9:57:55 PM EDT
[#42]
Quote HistoryOriginally Posted By guns762:
Good to know. We e got a can of the fiberglass stuff too. Not sure we will do the 3D printed area. I think we would end up making more of a mess than fixing it. Is there a storyboard or other general layout you are working from? Pics?
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Posted: 10/2/2019 10:04:28 PM EDT
[#43]
Update 10/2.2
This is a prototype drawing for the wheels. After consulting with CAD, they increased the size of the wholes to remove more weight, and added two more sets of small holes. 
Students rounded up more red dirt so we could continue on our shelves. This stuff is much more red and we will have to blend it on to other already done areas too. 
Students are also working on designing some of our Martian colony. The water jug will be modified further and eventually painted white......ish. We think we will take the colony down below to subterranean also. 
Grain silos are almost ready for some paint, and weeds and wild grass is growing along the field edges. We also go part of our dirt road on there today too. 
Waiting for the nose cone to be printed, we mounted Marvin's ride on the wall.
The head custodian helped get our mounting plates on today, and students began painting them to match. 
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Posted: 10/2/2019 10:10:14 PM EDT
[Last Edit: kpel308]
[#44]
Quote HistoryOriginally Posted By guns762:
Good to know. We e got a can of the fiberglass stuff too. Not sure we will do the 3D printed area. I think we would end up making more of a mess than fixing it.  Super Smooth Prints // Acetone Vapor Bath |
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Posted: 10/2/2019 10:17:03 PM EDT
[#45]
Quote HistoryOriginally Posted By JoseCuervo:
Maybe just sand the ridges down a bit. Paint only covers so much, but lots of primer coats and light sanding might just do it. Is there a storyboard or other general layout you are working from? Pics? Quote HistoryOriginally Posted By JoseCuervo:
Originally Posted By guns762:
Good to know. We e got a can of the fiberglass stuff too. Not sure we will do the 3D printed area. I think we would end up making more of a mess than fixing it. Is there a storyboard or other general layout you are working from? Pics?
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Posted: 10/2/2019 10:18:52 PM EDT
[#46]
Quote HistoryOriginally Posted By kpel308:
For the 3D printed nose cone, have you thought of using the acetone vapor method? It works with ABS. I may have missed what material you are actually using.  https://www.youtube.com/watch?v=yyoefQ4k4BAQuote HistoryOriginally Posted By kpel308:
Originally Posted By guns762:
Good to know. We e got a can of the fiberglass stuff too. Not sure we will do the 3D printed area. I think we would end up making more of a mess than fixing it. https://www.youtube.com/watch?v=yyoefQ4k4BA |
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Posted: 10/3/2019 1:08:19 AM EDT
[#47]
New Deere prototype driverless tractor was released a week ago.
 Attached File Attached File Attached File |
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Posted: 10/3/2019 7:48:44 AM EDT
[#48]
Quote HistoryOriginally Posted By StealthM8:
New Deere prototype driverless tractor was released a week ago. https://www.AR15.Com/media/mediaFiles/215362/JDdriverless1_jpg-1110815.JPG https://www.AR15.Com/media/mediaFiles/215362/JDdriverless4edited_jpg-1110817.JPG https://www.AR15.Com/media/mediaFiles/215362/JDdriverless6_jpg-1110816.JPG We will probably have to create the tread another way. We have a couple ideas, but the simple design on a traditional tractor tire, or like on the belts in those pictures, is probably pretty easy for us to create. |
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Posted: 10/3/2019 8:22:42 AM EDT
[#49]
Annoying, yet funny points from yesterday......
We have students rounding up the red dirt from the Ten Sleep Formation areas around our county and adjoining counties. To get it, it's about 30 miles from school. Well, a student made the trip Tues night to get several bucket fulls. When he brought it in yesterday morning, he managed to track red mud everywhere (it was snowing). Mars was all over the carpeted entry ways and down the hall. 
Then, after each class got done working with the dirt yesterday, it was all over the classroom floors. They would sweep and sweep, but that stuff, just powders and spreads. Mars is everywhere.
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Posted: 10/3/2019 10:40:44 AM EDT
[Last Edit: guns762]
[#50]
Quote HistoryOriginally Posted By JoseCuervo: Maybe just sand the ridges down a bit. Paint only covers so much, but lots of primer coats and light sanding might just do it. Is there a storyboard or other general layout you are working from? Pics? The cone on the back is the same cone for our Starship nose cone. We need to add a nozzle end to it.
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