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back strap/volute mold - another forum top tip
http://mowrystrings.luthiersforum.com/forum/viewtopic.php?f=10101&t=51564		 Page 1 of 1
Author:  cablepuller1 [ Tue Feb 05, 2019 3:09 pm ]
Post subject:  back strap/volute mold - another forum top tip
hi,

can't remember where on this forum, but it was posted in the comments for glueing a back strap and it works a treat, so thankyou whoever it was.

I think they bought the stuff from stu mac but I found multi-morph mouldable plastic on eBay for £10.

-just put pellets in hot water,
- take out and mold into long flat peice of plastic
-stick a thin bag over headstock (to keep dry)
- push over back of headstock, use thumbs to get it flat to surface and curve
- when set, remove and use blade to cut off the sides that spilled over the edges, to achieve replica of rear shape
- clamp
- crack open a beer
- done
Image

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Author:  Bryan Bear [ Tue Feb 05, 2019 3:56 pm ]
Post subject:  Re: back strap/volute mold - another forum top tip
Awesome! I currently use a caul that is close to the shape and put high density foam between that and the veneer. The foam compresses and makes for a nicer fit than my rough caul alone. I like this much better and I already have some sheets of thermoplastic that I can warm up with the heat gun (no water needed) to make a new, better caul. Thanks!
Author:  meddlingfool [ Tue Feb 05, 2019 6:57 pm ]
Post subject:  Re: back strap/volute mold - another forum top tip
Nice!
Author:  Kbore [ Wed Feb 06, 2019 9:49 pm ]
Post subject:  Re: back strap/volute mold - another forum top tip
nice!
Author:  Pegasusguitars [ Wed Feb 06, 2019 10:54 pm ]
Post subject:  Re: back strap/volute mold - another forum top tip
Was this stuff stiff enough that you could clamp right onto it or did you use another flexible caul on top of the molded plastic? Thanks, Bob
Author:  cablepuller1 [ Fri Feb 08, 2019 11:19 am ]
Post subject:  Re: back strap/volute mold - another forum top tip
Pegasusguitars wrote:
Was this stuff stiff enough that you could clamp right onto it or did you use another flexible caul on top of the molded plastic? Thanks, Bob
stiff enough on it's own, sets really hard. removed it and had a perfect bond

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