Flattening question

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Forum topic by Burgels posted 401 days ago 409 views 0 times favorited 8 replies Add to Favorites Watch
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116 posts in 445 days

401 days ago

My most recent end grain board developed a twist from the final glue up. I don’t have a thickness planer (yet) and I’m not sure how to correct the twist. Any thoughts? My best guess is to put feet on one side that are at different heights to hide the twist and then make it a one sided board.

8 replies so far

View HerbC's profile


1162 posts in 1494 days

#1 posted 401 days ago

Do NOT use a thickness planer to attempt to flatten the twist out of an endgrain board. You will almost certainly experience catastrophic failure as the blade grabs the endgrain. It won’t be pretty and might be quite dangerous!

You might be able to fix the problem by making a router planing sled to flatten the surface again (shim up the bottom to reach a stable position, route the top flat, turn the board over and flatten the other side…

Good Luck!

Be Careful!


-- Herb, Florida - Here's why I close most messages with "Be Careful!"

View mrjinx007's profile


1374 posts in 402 days

#2 posted 401 days ago

If you have a belt sander and a staight edge you can sand down the areas that straight edge reveals.


View Burgels's profile


116 posts in 445 days

#3 posted 401 days ago

Herb, I have heard the same thing, and don’t have a thickness planer anyway. I have heard about the router method but I’m not sure I could pull it off…

mrjinx, I don’t have a belt sander but I do have a ROS. I suppose If I was patient I could accomplish the same thing…

View waho6o9's profile (online now)


4843 posts in 1211 days

#4 posted 401 days ago

View moke's profile


478 posts in 1411 days

#5 posted 401 days ago

As mrjinx007 said…the best way is to use a straightedge….ROS with agressive paper or a belt sander….mark the areas the need help with a pencil and sand a way. I have a drumsander and if the board is big enough and the top gradually uneven, it will not help…if it is bad enough it might I think the above mentioned sand and be patient method is the best….

View pintodeluxe's profile


3335 posts in 1448 days

#6 posted 401 days ago

1+ router sled.

Another option is a big belt sander with a sled accessory. The sleds are available from Dewalt, Bosch etc and keep the sander from gouging the wood.

That said, when I have had small projects like cutting boards go bad, I usually just scrap them.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View Arcola60's profile


37 posts in 1018 days

#7 posted 401 days ago

I have used a router sled to do all of my end grain boards. The wood wisperer has a simple plywood design.
It works great. You can sneak up on your depth. I use double sided tape on each corner. I go clockwise
around the perimeter on the first pass to stop tear out. Then you can mill away. Then sand, sand, sand.
This is not the only way to do it. It has been very sucessful for me.

Ellery Becnel

View Burgels's profile


116 posts in 445 days

#8 posted 401 days ago

I may have to break down and try that. I have been avoiding it because it seems like it would be easy to screw up.

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