LumberJocks

48" x16"x 8/4 Slab of Walnut..Can I relief cut the bottom to take out the sag?

  • Advertise with us

« back to Woodworking Skill Share forum

Forum topic by RickyBobby posted 04-08-2011 05:33 AM 1283 views 0 times favorited 3 replies Add to Favorites Watch
View RickyBobby's profile

RickyBobby

16 posts in 2066 days


04-08-2011 05:33 AM

Hello all… I searched for an answer but couldn’t really find what I was looking for… I’ve got this piece of Walnut that was kiln dried but as I began working it I noticed it wasn’t flat. I placed a straight edge on it long ways and measured the lowest point to be sagging by a 1/4” .... The piece will be screwed to a metal base and I was wondering if I could place some relief cuts along the length of the board on the bottom (hidden)side to relieve some tension. The desired top side is the concave side….If I do make these cuts how deep should I go? Thanks in advance….


3 replies so far

View Loren's profile

Loren

8295 posts in 3108 days


#1 posted 04-08-2011 05:57 AM

The effect of such cuts will be hard to predict. Better, in general, to
screw the board to stretchers of wood or metal underneath to pull it flat.

View RickyBobby's profile

RickyBobby

16 posts in 2066 days


#2 posted 04-08-2011 01:01 PM

Kinda what I was thinking….. Thanks for the reply.. I was hoping somebody may have tried this already and could share their “success story”

View Loren's profile

Loren

8295 posts in 3108 days


#3 posted 04-08-2011 06:04 PM

You can rip a 1/4” strip off one edge and see what it does when you remove
some material from the side you’re thinking of. If it bends the way you
want, chances are the whole board will do the same thing, more or less.

There’s a science to studying growth rings and anticipating wood movement
based on this. You get an intuitive sense of it with experience, but I’m
still reluctant to take the kind of chance you’re considering.

If you put 2 saw kerfs in the bottom running lengthwise, you can fit one
leg of pieces of aluminum or steel angle iron into the kerfs and screw the
other leg to the bottom of the board. This way the reinforcement is
barely noticeable.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com