Bending purpleheart

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Bending purpleheart

Postby Andy Bounsall » Sun Jan 22, 2017 6:55 pm

Does anyone have experience bending purpleheart. My first attempt didn't go well.

I use a heating blanket sandwiched with the side and two metal slats. I tried bending it dry at about .110 thick. In attempting to get the wood to relax, I had the blanket cranked up hot enough to scorch the wood. The side ended up cracking in several places.

Next attempt will be to bend it wet and wrapped in foil to hold the steam in. I'd be interested to know if others have had success with purpleheart and if so, what worked best for you.
Andy Bounsall
Posts: 60
Joined: Thu Feb 02, 2012 12:29 pm
Location: Ottawa, Ontario, Canada

Re: Bending purpleheart

Postby Bob Shanklin » Sun Jan 22, 2017 11:41 pm

If bending sides, try a sandwich of wood at about .080" spritzed with water, wrapped in craft paper, wrapped in foil shinny side in, blanket on top, metal slats top and bottom. Bend at 300*ish F .
You might want to watch Grant Golz vid on youtube . I have been using a system very similar to Grant's for about 10 years, but I put the blanket under the top shim rather than over. Works like a charm.
Bob Shanklin
Posts: 24
Joined: Thu Feb 02, 2012 7:59 pm
Location: Windsor, ON

Re: Bending purpleheart

Postby David King » Mon Jan 23, 2017 1:13 pm

Purpleheart is a bunch of different related species (11 I think) with slightly different characteristics.
David King
Posts: 2448
Joined: Sat Jan 07, 2012 10:01 pm
Location: Portland, OR

Re: Bending purpleheart

Postby Brian Evans » Mon Jan 23, 2017 4:19 pm

I've never tried to bend thicker than .095". .110" seems very thick to me.
Brian Evans
Posts: 720
Joined: Sat Aug 30, 2014 8:26 am
Location: Tatamagouche, Nova Scotia

Re: Bending purpleheart

Postby Andy Bounsall » Mon Jan 23, 2017 6:57 pm

Thanks for your replies. I've built a number of guitars but have been away from it for a decade. Now I'm back. It's surprising how much you can forget in that time!

I'll give it another go: thinner, dampened, wrapped in foil. Thanks again.
Andy Bounsall
Posts: 60
Joined: Thu Feb 02, 2012 12:29 pm
Location: Ottawa, Ontario, Canada

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