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9/16/2019 10:09:13 PM
Posted: 6/16/2014 7:35:28 AM EDT
[Last Edit: 6/16/2014 7:38:38 AM EDT by ns66]
I have used JB Weld once before, I found it not as strong as I hoped. yesterday I bought JB Weld putty to do some repair work, after 20 hours, it is still soft and finger nail can dent or scratch it easily, I can't imagine it has 300psi tensile strength as claimed, it will be lucky to be 10psi. Is epoxy overrated or just JB Weld sucks?

is there a good epoxy that will be as hard as rock?
Link Posted: 6/16/2014 7:40:53 AM EDT
Originally Posted By ns66:
I have used JB Weld once before, I found it not as strong as I hoped. yesterday I bought JB Weld putty to do some repair work, after 20 hours, it is still soft and finger nail can dent or scratch it easily, I can't imagine it has 300psi tensile strength as claimed, it will be lucky to be 10psi. Is epoxy overrated or just JB Weld sucks?

is there a good epoxy that will be as hard as rock?
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its either old, or you didn't mix it correctly
Link Posted: 6/16/2014 7:41:57 AM EDT
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Originally Posted By TaylorWSO:
its either old, or you didn't mix it correctly
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Originally Posted By TaylorWSO:
Originally Posted By ns66:
I have used JB Weld once before, I found it not as strong as I hoped. yesterday I bought JB Weld putty to do some repair work, after 20 hours, it is still soft and finger nail can dent or scratch it easily, I can't imagine it has 300psi tensile strength as claimed, it will be lucky to be 10psi. Is epoxy overrated or just JB Weld sucks?

is there a good epoxy that will be as hard as rock?
its either old, or you didn't mix it correctly
This.
Link Posted: 6/16/2014 7:43:16 AM EDT
[Last Edit: 6/16/2014 7:43:41 AM EDT by raresheg]
JB weld is the bomb. You can drill and tap that stuff. Get the original JB weld 2 part epoxy, not the quick set or any other, get the original and mix it properly.

ETA: Let cure for 24 hours.
Link Posted: 6/16/2014 7:43:30 AM EDT
did you bake it?
Link Posted: 6/16/2014 7:47:50 AM EDT
JB usually sets up and cures overnight. Do mix it right 50/50 and do not disturb until it cures. Epoxy up whatever you're epoxying then forget the thing exists, don't move it again or touch it, breathe on it, etc. for the entire curing period.
Link Posted: 6/16/2014 7:48:30 AM EDT
http://www.tools4flooring.com/duo-fast-jet-tac-tack-strip-epoxy-10-oz-cartridge.html#.U58RhXamXjI

i dont know what the application is you are doing, but this shit is amazing.

Link Posted: 6/16/2014 7:49:19 AM EDT
EA9396
Link Posted: 6/16/2014 7:49:54 AM EDT
What are you using it for?
Link Posted: 6/16/2014 7:52:21 AM EDT
Marine-Tex. I've patched holes in small engine blocks, etc with it.
Link Posted: 6/16/2014 7:54:31 AM EDT
I used some Loctite epoxy recently. I had no problems mixing it or applying it. It set up properly when left overnight.
Link Posted: 6/16/2014 8:06:40 AM EDT
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Originally Posted By bluetick357:
What are you using it for?
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This. I use T-88 for structural woodworking epoxy. I would not use JB weld for that application.

Right tool for,the job
Link Posted: 6/16/2014 8:44:55 AM EDT
[Last Edit: 6/16/2014 8:48:58 AM EDT by ns66]
i used JB plastic putty to fill a big hole in plastic, the fill is nowhere near as strong as the plastic

btw i did mix 50/50 and mix it thoroughly
Link Posted: 6/16/2014 8:51:43 AM EDT
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Originally Posted By ns66:
i used JB plastic putty to fill a big hole in plastic, the fill is nowhere near as strong as the plastic

btw i did mix 50/50 and mix it thoroughly
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It's not going to work to fill large gaps.You need to use it to put a patch of some sort on.
Link Posted: 6/16/2014 2:47:36 PM EDT
http://www.westsystem.com/ss/

you will thank me later
Link Posted: 6/16/2014 4:56:46 PM EDT
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Originally Posted By sailmirage:
http://www.westsystem.com/ss/

you will thank me later
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Listen to this - he knows what he is saying. West System is heinously expensive, but worth every fucking penny!! Going from JB Weld to West System is like going from an RG to a Colt Python. A can of resin, hardener, and some proportioning pumps will probably set you back around $100 instead of the $6.95 for JB Weld, but you'll be glad you did!

Link Posted: 6/16/2014 4:58:41 PM EDT
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Originally Posted By POLYTHENEPAM:
I used some Loctite epoxy recently. I had no problems mixing it or applying it. It set up properly when left overnight.
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So did I, it's good stuff. I got the one with the mixing tubes, worked great and no mess. They sell it at Home Depot.
Link Posted: 6/16/2014 4:59:44 PM EDT
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Originally Posted By sailmirage:
http://www.westsystem.com/ss/

you will thank me later
View Quote


That's good stuff, for large fabrication projects. I get it here:


http://www.aircraftspruce.com/
Link Posted: 6/16/2014 5:04:22 PM EDT
[Last Edit: 6/16/2014 5:04:54 PM EDT by AZ_Sky]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Chairborne:


That's good stuff, for large fabrication projects. I get it here:


http://www.aircraftspruce.com/
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Originally Posted By Chairborne:
Originally Posted By sailmirage:
http://www.westsystem.com/ss/

you will thank me later


That's good stuff, for large fabrication projects. I get it here:


http://www.aircraftspruce.com/
Yep - great stuff!
I got my last gallon from Aircraft Spruce.
It's not designed to work like JB Weld but for bonding most stuff and especially wood, West System is great.
Link Posted: 6/16/2014 5:08:43 PM EDT
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Originally Posted By TaylorWSO:
its either old, or you didn't mix it correctly
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Going to go with this too, Had a friend that stripped and blew a spark,plug out of the head of an engine, we slapped some JB on the plug and shoved it back in. Let it sit over night and started it and it held. Drove the car for 10K miles before it blew the plug back out. That time we put a heli coil in.
Link Posted: 6/16/2014 5:12:01 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By sailmirage:
http://www.westsystem.com/ss/

you will thank me later
View Quote



I won't have to thank you, as I already use this product! This stuff rocks!

Available on Amazon Prime, usually for a very good price.
Link Posted: 6/16/2014 5:12:07 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By TaylorWSO:
its either old, or you didn't mix it correctly
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By TaylorWSO:
Originally Posted By ns66:
I have used JB Weld once before, I found it not as strong as I hoped. yesterday I bought JB Weld putty to do some repair work, after 20 hours, it is still soft and finger nail can dent or scratch it easily, I can't imagine it has 300psi tensile strength as claimed, it will be lucky to be 10psi. Is epoxy overrated or just JB Weld sucks?

is there a good epoxy that will be as hard as rock?
its either old, or you didn't mix it correctly

Link Posted: 6/16/2014 5:13:44 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By sailmirage:
http://www.westsystem.com/ss/

you will thank me later
View Quote


Secret here is West makes several fillers you add to the epoxy to get the right strength for the job.
Soft for fairing and sanding to hard for bedding and drilling.
Link Posted: 6/16/2014 5:17:05 PM EDT
If your not using it in a high temp application, golf club epoxy is great stuff. It has excellent adhesion and shock resistance. It's the epoxy used to hold the club head onto the shaft. It also comes in black.
Link
Link Posted: 6/16/2014 5:18:12 PM EDT
I find most homeowners can't RTFM and then they wonder why it doesn't work.
Link Posted: 6/16/2014 5:36:46 PM EDT
Marine Epoxy. Takes 2 days to set up 100% but is tough.
Link Posted: 6/16/2014 6:01:02 PM EDT

JB Weld works fine. Just leave over night to dry. I've use Marine-Tex in the past too. It works damn good too.


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