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Posted: 4/22/2018 6:04:44 PM EDT
[#1]
Grip of shame! Grip of shame! Oh wait....nvm.
It's probably ok structurally. Only down side I would say is it might let dirt into the action easier. That might be able to be fixed with one of those receiver rugs that were designed to go into the bottom of lower to prevent loose blown primers from jamming up the trigger group. I would shoot it no worries. ETA: Welcome to arfcom! |
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Posted: 4/22/2018 6:05:17 PM EDT
[#2]
I dont see how it wouldnt function but it is ugly. use it till you can afford another blank?
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Posted: 4/22/2018 6:11:12 PM EDT
[#3]
You can tape up the hole, fill the bottom of the reciever with 1/4 inch of JB Weld and re-mill.
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Posted: 4/22/2018 6:18:03 PM EDT
[#4]
Quote HistoryQuoted:
You can tape up the hole, fill the bottom of the reciever with 1/4 inch of JB Weld and re-mill. By the way, is that by chance a poly lower, it looks like white plastic, if it is, cut a piece of aluminum flashing or 1/8" plastic and glue it in place then cut the hole out. Also, how the hell did you have that happen? |
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Posted: 4/22/2018 7:15:34 PM EDT
[#5]
Quote HistoryQuoted:
Exactly, I would cut a small piece of aluminum flashing, put a small layer of JB down, then lay the aluminum on top and coat with JB and re-mill it, put some blue painters tape on the outside over the messed up cut so the JB weld don't run out the hole, let it sit for a few days with the JB weld so it cures good and hard, then redo it and nobody but you will know. By the way, is that by chance a poly lower, it looks like white plastic, if it is, cut a piece of aluminum flashing or 1/8" plastic and glue it in place then cut the hole out. Also, how the hell did you have that happen? Quote HistoryQuoted:
Quoted:
You can tape up the hole, fill the bottom of the reciever with 1/4 inch of JB Weld and re-mill. By the way, is that by chance a poly lower, it looks like white plastic, if it is, cut a piece of aluminum flashing or 1/8" plastic and glue it in place then cut the hole out. Also, how the hell did you have that happen? This happens when your end mill comes loose from the router collet. |
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Posted: 4/22/2018 7:24:22 PM EDT
[#6]
Second it with jb weld and flashing to re-do
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Posted: 4/22/2018 9:23:47 PM EDT
[#7]
Salvagable, but DAMN! that’s ugly. JB Weld is your friend.
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Posted: 4/22/2018 9:28:18 PM EDT
[#8]
It will function... but damn, that'd be a waste of good JB Weld.
My vote: Kill it with Fire or sell it on Armslist for $20 |
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Posted: 4/22/2018 10:24:36 PM EDT
[#9]
No it’s 7075 t6 forges aluminum, not poly. It’s a lot from vision defense, Cerakoted in Snow White. They do them in a variety of colors for around $480 for a complete build with a jig. The end mill I used snapped a hit of the tip off on one side, so I didn’t realize how deep the good side was cutting vs the bad side and once I cleared out all the shavings that’s what I found. Was majorly disappointed. It’s my first one though, so I learned a few things, next one will be better. Need better bits, all the bits I used had horrible “walk” to them. And a carbide end mill shouldn’t break on aluminum.... I didn’t use a router, I used a drill press with an x/y slide vice attached to it. Has anyone here ever used both? I’d love to know from someone who’s used both which is a better way to go, drill press vs router. I want to make several more (call me crazy but I want them in different colors). And would like to perfect the process....
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Posted: 4/22/2018 10:37:31 PM EDT
[#10]
Quote HistoryQuoted:
And a carbide end mill shouldn’t break on aluminum.... I didn’t use a router, I used a drill press with an x/y slide vice attached to it. Has anyone here ever used both? I’d love to know from someone who’s used both which is a better way to go, drill press vs router. I want to make several more (call me crazy but I want them in different colors). And would like to perfect the process.... You’re lucky, you can wind up wearing the chuck. |
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Posted: 4/23/2018 2:14:30 AM EDT
[#11]
Any suggestions on brand/model numbers of routers that are good for this kinda work then? I’m most likely going to be getting the gen 2 jig from 80percentarms.com before my next build. Their jig and tools are made for plunge routers but I’m not really sure what models would work out well. Can you point in the right direction?
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Posted: 4/23/2018 4:33:36 AM EDT
[#12]
Quote HistoryQuoted:
Any suggestions on brand/model numbers of routers that are good for this kinda work then? I'm most likely going to be getting the gen 2 jig from 80percentarms.com before my next build. Their jig and tools are made for plunge routers but I'm not really sure what models would work out well. Can you point in the right direction? https://www.ar15.com/forums/AR-15/NEW-UPDATE-12-17-17-Review-of-the-NEW-5D-Tactical-PRO-Jig-for-cutting-out-80-Lowers-/4-720803/ |
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Posted: 4/23/2018 7:44:25 AM EDT
[#13]
Quote HistoryQuoted: A drill press isn’t designed for side loading, you were probably encountering significant wobble due to the taper fit of the the spindle. You’re lucky, you can wind up wearing the chuck. 
The run out from side loading killed your lower. 
And holy shit UGLY! Sorry, had to say it out loud. 
JB will probably repair it as stated. Personally, I'd start over, chalk it up to learning. It would always bother me.... |
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Posted: 4/24/2018 7:32:47 AM EDT
[#14]
You need both drill press and router IMO
Yes a mill would be great..but if no mill..see above Drill out the majority plunge cutting with the press and finish it up with the router I like the Makita router Makita makes great tools, I have many and at 99$ its competitive to lesser tools My first one the router got away from me and made a ragged hole from the trigger pocket to the cavity for the mag release..diddnt affect anything, not sure if gunk build up might one day be an issue but to remove the mag release and spray carb cleaner isn't much of a problem That sure is an ugly trigger hole : ( Is that rough finish typical of that product?..seems lumpy |
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Posted: 4/25/2018 12:42:32 AM EDT
[#15]
Sean M76:
I've done four of them. First two scrapped, third and fourth were great. My advice: Recommend a drill press, which you have, and router. A plunge router would be perfect, but I used a new Ridgid 1 1/2 HP Compact Router. I think the sku is R24012. It worked very well. I think technically it's called a laminate trimmer, and it comes with that bit. Without the plunge feature, you manually lower the bit by about 1/8" each time you make a pass, and carefully put the bit down into one of the holes you drilled with the router, then turn it on and make your pass. Also, do not ever raise the router out, until it's stopped. If you're not sure about the runout on your drill press, drill some holes in metal and check how your trigger and hammer pins fit. If runout is excessive, they will be too loose. Ditto for the larger hole for the safety. |
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Posted: 4/26/2018 7:05:51 AM EDT
[#16]
In addition to what everyone else has said: as soon as you noticed that bit was broken - cease and desist! Throw it away. You shouldn't have kept going with it. Even under optimal operating conditions, you shouldn't use a damaged bit, the risk is exponential trying to use it on a drill press with an X-Y table. You're lucky that the only thing suffering from it is that receiver, and that you still have all of your soft parts intact.
As for the receiver, As long as there is enough material left for the legs of the trigger return spring to rest on, the weapon will function. |
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Posted: 5/26/2018 2:05:24 PM EDT
[#17]
Back to the repair, as recommended fill with JB weld or other epoxy resin, but I will add, use a smooth packing tape for the bottom dam, as any texture from the tape will be reproduced in your filler, also you can add some of the aluminum filings from the machining process, just for added structure, speaking from experience......
And since I'm editing, it's not ruined by any means fix it and shoot it. |
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Posted: 5/26/2018 11:15:39 PM EDT
[#18]
Sweet Jesus! After reading your post I had a picture in my head of what your mistake might look like........then I saw the pic! I’d get a new lower and try again.
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Posted: 5/27/2018 9:24:23 PM EDT
[#19]
I did an 80% with a bad jig that buggered the safety hole.
Wound up drilling it to 1/2 inch and JB welding in a plug. |
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