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A couple heat treating questions

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WhistlingBadger:
Well, dang it.  I steamed it for a little over an hour, put it on a form, let it cool, then went ahead and heat treated it still on the form.  Just took it off and it popped right back, almost as bad as it was before.  Should I steam it again?  Would that undo the benefits of the heat treat?  How many times can you steam a section before it is weakened beyond repair?

bjrogg:

--- Quote from: WhistlingBadger on December 22, 2024, 05:51:41 pm ---Well, dang it.  I steamed it for a little over an hour, put it on a form, let it cool, then went ahead and heat treated it still on the form.  Just took it off and it popped right back, almost as bad as it was before.  Should I steam it again?  Would that undo the benefits of the heat treat?  How many times can you steam a section before it is weakened beyond repair?

--- End quote ---

I don’t have experience with maple, but I don’t think you would have much to lose by trying again. HHB does that occasionally to me to and usually doesn’t hold everything I give it anyway.

I generally leave it on my caul at least overnight. That seems to help.

Kinks can be difficult or maybe even impossible. But if it isn’t going to work with the kink then you probably don’t have much to lose. I don’t think you need to worry about damaging the wood unless it is over bent.

Bjrogg

bambule:
I`ve build a lot of maplebows. Heattreating works well for hardening but not as good for correction - only when there is a small amount to bend. Better with steaming - as you`ve done it.
Too much heattreating causes sometimes freats.
When you`ve steamed a part and corrected and after that heat treated the same area it goes often like you`ve explained  - I didn`t have a cure for that.
I try to do only one kind of treatment for better results.

Greets
Cord

superdav95:
Ive noticed this too. its actually a nice wood but has a memory to it.  hickory can be heat treated into a shape and will for the most part hold that shape.  maple is better for a core wood for laminated builds imo then hickory so long as its good and straight piece then steamed and shaped.  more heat treatment should be fine as you likley did a mild treatment. try to go slow and have the transfer of color light brown come to about midpoint of the thickness of the limbs.  it should hold shape better.   to stop wrap around i use a strip of roxall insulation the green looking stuff.  ive even tried the pink stuff too which also works.  you could staple it down tempoariy to your caul and would be able to prevent a lot of the warp around this way.  Best of luck and keep us posted. 

WhistlingBadger:
Well, I went ahead and steamed it again, and put it in a form that bent it a little further than I really want it.  I won't heat treat it this time, and I'll leave it in the form overnight and see how it goes.

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