|Forum topic by Jim Graham||posted 11-05-2011 02:33 AM||2586 views||0 times favorited||15 replies|
11-05-2011 02:33 AM
Hello, I am fairly new to woodworking and as you can see, a new member here as well.
I am building a tv table using hard maple and ran into an unanticipated issue tonight while resawing. I purchased some hard maple from a local lumber yard two weeks ago. It is 2.5” thick hard maple in various widths and lengths. The pieces I had trouble with tonight were approx 5-7.5 inches in width and 6 feet in length. Using the bandsaw, I removed a piece from the width using the bandsaw, this provided a reasonably flat surface to use when resawing the piece in half. The first piece I had trouble with bowed outwards as I was resawing, the pieces were bowing away from eachother. The second piece I cut, the pieces bowed inwards squeezing the blade as it cut. I actually had to stop and wedge a square in behind the blade in order to relieve the pressure and continue cutting. Now I am left with four pieces I had intended to use for the top but are now fairly bowed. I do not think there is enough material left to plane the bow out on the jointer.
My first question is, Is there any way to know that there are significant internal stresses which will result in such bowing when resawn?
My second questions is, What do I do now?? I spent a fair amount of money on these boards and if possible I would like to use them. I could save them for a future project which requires lengths short enough that I can plane the bow out, but I would rather (if possible) use them in this project. If I cant, thats life and I will find something to use them on. I just dont want to spend more money on material if I dont have to.
When I got the boards home, I checked the MC and found a range of 6%-9%. The boards got slightly damp on the trip home from a light mist/rain. They were not soaked. The lumber yard I bought them from stores them in an unconditioned warehouse but it is dry in there. I brought the boards into my basement (shop is there) and sticked them up for two weeks. I run a dehumidifier at 50% humidity and the temp is roughly 55-60 degrees usually. I checked the MC every few days to monitor changes. For the past three days the MC has been stable between 6% and 7%. I did resaw one piece before these two and it was great. No bowing at all.
I am using a JET 14” bandsaw with riser blocks, carter bearing guides and tires, a woodslicer 1/2” blade. I also used a bit of blade wax before each board. It seemed to cut very nicely and did not produce any burn marks or smell.
Thanks for any input you may have!