Knot replacement

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Forum topic by Twdmar posted 05-10-2019 07:26 AM 491 views 0 times favorited 6 replies Add to Favorites Watch
View Twdmar's profile


10 posts in 802 days

05-10-2019 07:26 AM

I am working on a piece of walnut with a big void where a not came out. I tried epoxy dyed black but it’s now a black hole. This piece will be laminated over another piece of walnut. Am I crazy for considering finding a walnut branch or knot and applying into the space? Its about an inch wide void

6 replies so far

View CaptainKlutz's profile


4440 posts in 2573 days

#1 posted 05-10-2019 07:56 AM

Don’t need to limit your patch options to branch or knot?

Can use an inlay router template and bit to make a patch any shape you want. Find another piece of walnut with similar grain pattern, and with patience using dye stain with small brush, could make the patch look original wood grain.

MLCS and others have information on how to patch defects in wood:

Peachtree has some cool template options for contrasting patch work:

Best Luck.

-- If it wasn't for bad luck, I wouldn't have no luck at all, Doom, despair, agony on me… - Albert King - Born Under a Bad Sign released 1967

View BalsaWood's profile


179 posts in 2237 days

#2 posted 05-11-2019 07:41 AM

They have plug cutters 1 inch and greater that you could use for that. You would just need some scrap walnut that matches that board.

View Peteybadboy's profile


3360 posts in 3028 days

#3 posted 05-11-2019 10:10 AM

Let me see, you filled the void with epoxy dyed black. (I did the same on my last project posted on LJ) I assume you don’t like the look? If so, look at the patch idea suggested by the captain. Note a few months ago FWW mag had a nice article on patches and how they can enhance a project. I’d like to see what you come up with.

-- Petey

View Nubsnstubs's profile


1774 posts in 2808 days

#4 posted 05-11-2019 01:43 PM

How about adding some contrast? Add a knot from a piece of Oak, Maple or other such species. Then, show your project to all your woodworking experts and see if the can explain the different species. Make it look like it grew in there. ...... Jerry (in Tucson)

-- Jerry (in Tucson)

View mahdee's profile


4291 posts in 2846 days

#5 posted 05-11-2019 02:40 PM

I like Jerry’s idea. I actually have a few slab of oak with a cedar tree growing inside of it.

Another way that I have used to match voids is to fill the void with bondo and sand it to like 400 and use colored pencils to match the colors. You will start with a base color like golden brown and hold your pencil at 5-10 degrees to the surface and color the whole thing. Then you would use a darker brown to match the “fans” and finally use the tip of the pencil to connect the grain lines. If your finish is going to be oil based, then use oil based pencils (Hobby Lobby) and be sure to spray the area with poly or whatever if you plan to brush finish the slab. Good luck.
PM me if I can help.


View Rich's profile


6817 posts in 1668 days

#6 posted 05-11-2019 02:45 PM

Another way that I have used to match voids is to fill the void with bondo and sand it to like 400 and use colored pencils to match the colors.

- mahdee

I did a blog post about that technique last year. I prefer epoxy putty, but the idea is the same.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

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