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Will Epoxy hold Screws?

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Forum topic by cag0331 posted 05-08-2017 04:44 PM 1128 views 0 times favorited 8 replies Add to Favorites Watch
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cag0331

13 posts in 416 days


05-08-2017 04:44 PM

Topic tags/keywords: epoxy west systems hole filling screw hole toothpicks wood glue

I’m trying to fill some screw holes in a shop jig that will need to be redrilled, and I’m wondering if epoxy (West Systems or even the stuff sold in the big boxes) would work for that application and hold the screws? Or is the toothpick and wood glue method the best for this application? Thanks!


8 replies so far

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waho6o9

8029 posts in 2413 days


#1 posted 05-08-2017 04:45 PM

What is the jig made out of?

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jbay

1857 posts in 736 days


#2 posted 05-08-2017 04:48 PM

If you can’t drill it and plug it with a dowel, then I would go the toothpick and glue route.

-- If anyone would like to see my Portfolio, PM me and I would be glad to send you the link.

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cag0331

13 posts in 416 days


#3 posted 05-08-2017 04:52 PM



What is the jig made out of?

- waho6o9


It’s made out of Baltic Birch ply laminated to 1.5” and the holes I want to fill are on the edge.

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waho6o9

8029 posts in 2413 days


#4 posted 05-08-2017 04:58 PM

For a jig application a plug might give you more strength in conjunction with glue or epoxy.

If possible a threaded insert may be useful as well.

Baltic Birch makes for a good jig. Good luck now

View DrDirt's profile

DrDirt

4414 posts in 3579 days


#5 posted 05-08-2017 05:12 PM

Yes epoxy works well. Folks use it to make mdf shelf pi jigs tougher as well as screw holes for de staco clamps
http://www.finewoodworking.com/2014/04/02/how-to-toughen-wood-with-epoxy

-- “The two most important days in your life are the day you are born and the day you find out why.” Mark Twain

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jbay

1857 posts in 736 days


#6 posted 05-08-2017 05:39 PM

You should cut it out and mortise in a new piece, then pin it to be sure!

-- If anyone would like to see my Portfolio, PM me and I would be glad to send you the link.

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them700project

115 posts in 855 days


#7 posted 05-08-2017 07:07 PM

I would think it would be better if the hole was undercut or threaded before filling it with the epoxy. that way the epoxy will hold in the wood. as for the strength of the epoxy i couldnt tell you

View shipwright's profile

shipwright

7779 posts in 2635 days


#8 posted 05-08-2017 08:04 PM

Actually, ..... the strongest way to get a screw to hold in wood is to overdrill the hole, fill with epoxy, and insert the screw. The positioning of the screw is facilitated by not overdrilling the whole depth.
Just epoxy-coating the screw before insertion in a proper fitting hole adds to the strength. Overdrilling makes it even stronger. The bigger the hole the stronger it gets until it reaches the tensile strength of the screw at which point the head is pulled off the screw.

To answer your question directly …. yes.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

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