Knot hole in Oak

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Forum topic by simmo posted 03-07-2016 04:45 PM 517 views 0 times favorited 7 replies Add to Favorites Watch
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55 posts in 2893 days

03-07-2016 04:45 PM

Topic tags/keywords: tip

Owing to a mistake on my pat I ended up with a knot hole on the face of a component, not havingthe time to make a new part I filled the hole by packing it with shavings from a piece of walnut and super glue ,did this in 3 layers and very filled slightly, sprayed with acceleration and when set planed , scraped it level and smooth ,result excellent approximation of a a sound knot in the oak, v happy !!!

7 replies so far

View Aj2's profile


628 posts in 1219 days

#1 posted 03-07-2016 06:04 PM

Ya it looks good,I’m glad you kept it.The way the grain flows around the knot looks cool.

View BurlyBob's profile


3468 posts in 1686 days

#2 posted 03-07-2016 06:16 PM

Good job. You can’t tell you ever touched it.

View simmo's profile


55 posts in 2893 days

#3 posted 03-07-2016 10:30 PM

Just to add the hole was 5/8 across and 1 ins deep
hth helps someone else

View oldwood's profile


54 posts in 665 days

#4 posted 03-08-2016 03:13 AM

I use that trick a lot and if you need to fill a larger void use sawdust/shavings and yellow glue. Not as good looking as the CA but can be pricey to do a large fill with CA. You can leave some room and finish filling with CA for a better look. Only drawback is the Yellow glue takes a long time to cure.

View Jim Finn's profile

Jim Finn

2390 posts in 2343 days

#5 posted 03-08-2016 02:06 PM

I use white glue (dries clear) and sanding powder to fill knots and small voids. Sawdust from saw is way to coarse to work well to my thinking. Larger voids I fill with epoxy and sanding powder mix.

-- "You may have your PHD but I have my GED and my DD 214"

View ADHDan's profile


799 posts in 1529 days

#6 posted 03-08-2016 05:25 PM

Will a CA glue/shavings mix bond to dried epoxy? I’m thinking of filling a large/deep knothole mostly with epoxy, but topping off with something that will look more natural.

I’ve tried filling with yellow glue but it takes forever to cure. I think you can speed it up by poking it with a pin as the outside starts to cure, to help allow air into the “pocket.”

-- Dan in Minneapolis, woodworking since 11/11.

View simmo's profile


55 posts in 2893 days

#7 posted 03-08-2016 06:21 PM

Yes it will bond ok ,
Tightly rolled, packed shavings of a suitable hue will emulate end grain that would be exhibited in a natural knot, indeed if the void is packed well it is indeed end grain that is cut ,planed ,scraped and finished as the parent material would be.This cannot be the case using a dust ,powder based filler.
The large part of the void can be filled with shavings as well,this is bonded in with ca glue as well , in all the process is very quick with minimal slump and shrinkage.
All hail CA glue

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