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Filling Knots and Cracks

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Forum topic by Erik1975 posted 08-20-2019 12:23 PM 301 views 0 times favorited 9 replies Add to Favorites Watch
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Erik1975

10 posts in 303 days


08-20-2019 12:23 PM

Looking for opinions on what product or method is best for filling knots and cracks


9 replies so far

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John Smith

1969 posts in 639 days


#1 posted 08-20-2019 12:52 PM

knots and cracks in what ???
photos of this nature will always get you the most accurate results.
as well as a description of what you are building and your expections.

.

.

-- I am a painter. That's what I do. I paint things --

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bilyo

814 posts in 1579 days


#2 posted 08-20-2019 12:53 PM

For me, it depends on what the final finish will be. For a good quality clear finish, I will usually use epoxy; sometimes tinted, sometimes clear or mixed with sanding dust. For painted surface, glue and sanding dust or commercial filler. Of course, you can also use a filler with a clear finish. For very small splits or cracks, CA (super glue) and sanding dust works good.

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pottz

5934 posts in 1461 days


#3 posted 08-20-2019 02:13 PM



For me, it depends on what the final finish will be. For a good quality clear finish, I will usually use epoxy; sometimes tinted, sometimes clear or mixed with sanding dust. For painted surface, glue and sanding dust or commercial filler. Of course, you can also use a filler with a clear finish. For very small splits or cracks, CA (super glue) and sanding dust works good.

- bilyo


+1 on these methods but you gotta give us more info on what your doing,way too vague.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

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Robert

3512 posts in 1958 days


#4 posted 08-20-2019 02:14 PM

For knots I use tinted epoxy. Be sure to clean out any bark inclusions or loose matter first.

For cracks I can close I use glue, epoxy or CA glue.

For cracks or shakes I can’t close, I would use wood filler and match the color as close as possible. If its something like a table top or slab, use a butterfly.

-- Everything is a prototype thats why its one of a kind!!

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Erik1975

10 posts in 303 days


#5 posted 08-20-2019 03:12 PM



For knots I use tinted epoxy. Be sure to clean out any bark inclusions or loose matter first.

For cracks I can close I use glue, epoxy or CA glue.

For cracks or shakes I can t close, I would use wood filler and match the color as close as possible. If its something like a table top or slab, use a butterfly.

- Robert

Sorry….....

I am working on an Ash and Walnut cabinet there is a knot in the one side panel which is ash. I wanted to keep the knot for the look when the panels were booked matched. the knot is about the size of a quarter and goes though the panel about the size of a pencil. I wanted to try to match the color as much as possible but the ash dust is way lighter than the knot(more brown)

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farmfromkansas

120 posts in 91 days


#6 posted 08-20-2019 08:50 PM

If I want to fill a knot so it looks like wood, I take a scrap of wood and carve a plug, make it tapered and drive it in with glue around it, then cut it off as close as possible after dry, and sand it flush. If I want to make a black colored plug, I use bondo, sand it smooth and use a magic marker to color it black, or you could paint it. Nothing commercial stays in a hole like bondo. Have never found a wood filler that would stay, always crack up or fall out. And I use a round file to clean up the hole before filling, the stuff around a knot is bark, and always ruins your job of filling.

View Jim Finn's profile

Jim Finn

2737 posts in 3399 days


#7 posted 08-20-2019 09:30 PM


If I want to fill a knot so it looks like wood, I take a scrap of wood and carve a plug, make it tapered and drive it in with glue around it, then cut it off as close as possible after dry, and sand it flush.

- farmfromkansas

I like cutting a “plug” like this for large voids, but I use a mixture of sanding dust and white glue to fill cracks and small voids.

-- No PHD just a DD214

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hhhopks

659 posts in 2854 days


#8 posted 08-20-2019 10:27 PM

I have used butterfly keys for cracks and leave it unfilled.

-- I'll be a woodworker when I grow up. HHHOPKS

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bilyo

814 posts in 1579 days


#9 posted 08-21-2019 12:48 AM


I am working on an Ash and Walnut cabinet there is a knot in the one side panel which is ash. I wanted to keep the knot for the look when the panels were booked matched. the knot is about the size of a quarter and goes though the panel about the size of a pencil. I wanted to try to match the color as much as possible but the ash dust is way lighter than the knot(more brown)

- Erik1975


Keep in mind that the sanding dust will darken when wet by the epoxy and you can always use sanding dust from a darker wood or use some tint in addition.

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