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Old 07-28-2012, 01:48 PM   #1
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need to keep epoxy from sticking


I need to glue in some threaded inserts into wood, and Epoxy would seem to be the best choice. the problem is I can't have the the screw sticking to the epoxy and I need to put the screw in place to keep the epoxy from filling the insert and the area beyond the insert were the screw will protrude.

Would vasoline do what I want?

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Old 07-28-2012, 03:50 PM   #2
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need to keep epoxy from sticking


I think you are heading the wrong way! You shouldn't be using that much epoxy. You should be using just a minimal amount to secure the insert to the hole, apply it to the outside of the insert and slide it in. You can then wipe off the excess from the face of the wood.

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Old 07-28-2012, 03:56 PM   #3
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need to keep epoxy from sticking


The threaded inserts stripped the holes in the wood, so there is a bit of space to fill.
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Old 07-28-2012, 04:16 PM   #4
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need to keep epoxy from sticking


Could you use JBWeld? Then you just wait until it sets up overnight and unscrew it. It'll be hard but not so sticky it holds the screw too tightly to remove it. The same thing would probably happen with 2 part epoxy, but I have done similar with JB and it worked fine.

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Old 07-28-2012, 04:47 PM   #5
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need to keep epoxy from sticking


Quote:
Originally Posted by forresth View Post
The threaded inserts stripped the holes in the wood, so there is a bit of space to fill.
Even was a little bit of space I think you should be alright just putting the epoxy on the outside of the insert before placing it in the wood. Any excess will be pushed upward, not down into the holes.
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Old 07-28-2012, 08:44 PM   #6
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need to keep epoxy from sticking


You can wax the fastener really well and you should be fine.


When there are significant gaps we usually use 403 or 404 filler.
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Old 07-28-2012, 09:59 PM   #7
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need to keep epoxy from sticking


I would think Mrsadell is right in saying you should not need much epoxy, just coat the outside of the insert. But you can also buy epoxy putty. It wont flow into the insert. It is pretty thick though, so you would need to push it into the hole well, to ensure good contact.
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Old 07-28-2012, 10:11 PM   #8
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need to keep epoxy from sticking


Um, why even bother with the insert? Just fill the hole with epoxy. Once it dries you drill it out enough to accommodate a screw and then fasten as usual. I've done this countless times on boats and it works great. The key is the pre-drilling for the screw. You want it pre-drilled so the screw doesn't put too much pressure on the surrounding material. On a boat that's the fiberglass; which does not have the same kind of 'give' that you get from wood. If you've got a local West Marine boat store they sell a handy kit that includes a syringe and cup. They're made of a kind of nylon that doesn't stick to epoxy. This way you can clean them and re-use them. I've used mine at least a dozen times over the years.

Or is there some other reason you feel the need for the insert?

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