Bandsaw Resawing and Length of Material

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Forum topic by Martink2 posted 01-31-2008 01:00 AM 2116 views 0 times favorited 3 replies Add to Favorites Watch
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2 posts in 3975 days

01-31-2008 01:00 AM

Topic tags/keywords: bandsaw resawing resaw material length

I just joined Lumberjocks and already searched for and read several threads about resawing on the bandsaw. I own a nearly new Jet 14” bandsaw (bought it last spring) and I am using a 3 TPI Timberwolf resawing blade. In fact, my main reason for purchasing a bandsaw was for resawing thicker stock, typically 4/4 or 6/4, to create finished stock of 3/8” (after planing and sanding).

There was all sorts of good information in the forums about resaw fences, tuning, etc., but the one thing I couldn’t find was recommended maximum length of material to be resawn. This is important to me because I feel it may be a contributing factor to my minimal, but less than happy experience so far.

I am using thinner finished stock because my specialty (although I am an amateur) is jewelry boxes, and I felt it was more cost effective for me to resaw my own material. My recent projects have used Khaya, Bloodwood, Lenga and Zebrawood.

With the former three I had purchased 3-foot lengths of 4/4 or 6/4 stock with width ranges of 5-6”. My experience with each of these pieces was identical. While I seemed to get a smooth, true cut with very little wandering (even in my inexperienced hands!), the end result was boards that warped horribly after being cut. In fact, it seemed as if the boards buckled almost immediately after the separating cut at the end of the board.

I am aware that any green or poorly dried wood can cause this, and that there is some amount of tension that is released from wood that is so cut. However, the raw material was purchased from a very reputable dealer, was further dried in my garage shop for six months, and the cut pieces were “stickered” for four to five days with ample weight atop the “sticker stack.”

Am I expecting too much by trying to resaw longer pieces of material? Or, as I suspect, is there something (or some things!) that I am doing incorrectly? Or is it, perhaps, a combination of all these factors?

-- Kevin, Vancouver, WA

3 replies so far

View SPalm's profile


5325 posts in 4088 days

#1 posted 01-31-2008 09:47 PM

Hey Martin, welcome to LJs.

I don’t have your answer. But I believe I can say it does not sound like you BS technique is causing this warping. 3 foot long boards are not that long. It either has to be the moisture content or the growth ring orientation of the boards (or as you mentioned, built in tension). Have you tried storing these exotics in the house? Your garage may be damper than you thought, with not much air flow.

Just wondering, is it warping in the long direction, or the short direction?

Just my $.02,

-- -- I'm no rocket surgeon

View davidtheboxmaker's profile


373 posts in 4011 days

#2 posted 01-31-2008 10:45 PM

Hi Martin
I resaw boards up to 3 foot long without this problem.
I resaw the first board, which may warp most because only 1 side has been cut, this giving tension effect on one side only.
I then true the face of the main piece in the planer or drum sander, then resaw the second board. The 2nd board has been sawn on both faces, but one face is flat and one rough.
I then true the face of the main piece and cut the 3rd board.
I am resawing over thickness as there is a lot of lost timber in this process.
Having resawn all the boards I require, I let them stand in my shop for up to a month, then true up the second face.
I would expect some slight bend which I lose when thicknessing.
Most times this produces a good result – occasionally a ‘wild piece’ will twist and warp.
Up to 30% of the main piece can be lost in the resawing/planing process.
I would not expect to get 4 boards 3/8” thick out of a 2” piece – that would be tight for me .
Hope the above helps

View Catspaw's profile


236 posts in 4021 days

#3 posted 02-01-2008 01:30 AM

uh, i just resawed some 6” x 10’ long butternut @ 3/16” and didn’t have any problems…..does that help?.....sorry….just in a screwy mood (i did do the resawing, though.)

I’m thinking basic tension in the wood. I don’t know how to help. By my above example, “length” is not necessarily a problem per se.

-- arborial reconfiguration specialist

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