Warped cutting boards

[Bado 0]

Hello All,

I started to make cutting boards from black walnut. I flatten boards using the planer. Then when when i apply the mineral oil, the boards will warp overnight. It drives me crazy. I read lot of info regarding warped cutting boards but majority of time it is related to water contact. This is not my case. They warp after mineral oil application. Am I doing something wrong or boards will never be  perfectly flat and I am just too picky?  Any help is appreciated.

[Tpt life 2520]

Are you flooding, or applying to only one side? Are you leaving wide boards or talking about glued smaller stock? Many will pond the oil in a tub and immerse the whole board. 

[wtnhighlander 6201]

Standing the board on edge to 'dry out' helps keep things even with water or oil. Typically, oil does not 're-hydrate' the cells of the wood to produce swelling and warping, though.

[Bado 0]

I don`t flood the boards, however i apply oil on both sides the same time. I try do do it as evenly as possible.  Also, I dry them sitting on their edges.  I don glue small pieces together. It is always  one piece of wood per a board. I even tried different brands for oil. I am really puzzled. The wood that I am using is kilned dried and I keep it it my workshop for a good week until I make boards from it.

[Tpt life 2520]

Can you post a picture for us?

[lewisc 425]

I have had a board cup before but that was when I left it flat on a bench. Once I stickered it, it returned to normal. From then on I always screw small rubber feet to the underside. 
 

How thick are your boards?

[curlyoak 424]

Has the walnut been completely dried? Is it the center of the log?