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Knot hole in Oak

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Forum topic by simmo posted 03-07-2016 04:45 PM 551 views 0 times favorited 7 replies Add to Favorites Watch
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simmo

58 posts in 2938 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

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Aj2

692 posts in 1264 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.

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BurlyBob

3695 posts in 1732 days


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

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

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simmo

58 posts in 2938 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
Chris

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oldwood

56 posts in 710 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.

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Jim Finn

2416 posts in 2388 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"

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ADHDan

800 posts in 1575 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.

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simmo

58 posts in 2938 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
Chris

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