Neil Gaskin
09-26-2018, 5:22 PM
I'm looking for advice or tips on preventing movement during/after planing material to thickness.
I am using 8/4 QSWO planed down to 1 1/4" finished thickness. Boards are approximately 9' long.
The material acclimated to the shop for over 6 weeks before today. The shops temperature is regulated and typically about 70% with +-/ 50% humidity. MC of the material was 7.1% at the highest reading today, mostly between 6.5-7.0 taken at several places on each board. All material started between 6-8" wide was ripped down 5.5" before planing.
One face was run on the jointer then planed down flipping over with each pass through the planer. We took about but no more than 1/16" with each pass. Finish thickness was just a hair over 1 1/4". All the planing was completed at the same time.
The boards started out flat and ended up bowed like bananas. I need these to be mostly arrow straight to be used as door stiles for two custom storm doors. I will say I've had this happen before but not typically with all the material, maybe a board out of batch, not all of them.
Would milling a lesser thickness over a period of days make a difference? I've heard mixed and conflicting advice on this in the past but I'm certainly willing to give it a try.
Would ripping most of the material on our band-saw then planing to smooth the last +/- 1/8" make any difference?
Any advice is appreciated, thank you in advance.
I am using 8/4 QSWO planed down to 1 1/4" finished thickness. Boards are approximately 9' long.
The material acclimated to the shop for over 6 weeks before today. The shops temperature is regulated and typically about 70% with +-/ 50% humidity. MC of the material was 7.1% at the highest reading today, mostly between 6.5-7.0 taken at several places on each board. All material started between 6-8" wide was ripped down 5.5" before planing.
One face was run on the jointer then planed down flipping over with each pass through the planer. We took about but no more than 1/16" with each pass. Finish thickness was just a hair over 1 1/4". All the planing was completed at the same time.
The boards started out flat and ended up bowed like bananas. I need these to be mostly arrow straight to be used as door stiles for two custom storm doors. I will say I've had this happen before but not typically with all the material, maybe a board out of batch, not all of them.
Would milling a lesser thickness over a period of days make a difference? I've heard mixed and conflicting advice on this in the past but I'm certainly willing to give it a try.
Would ripping most of the material on our band-saw then planing to smooth the last +/- 1/8" make any difference?
Any advice is appreciated, thank you in advance.