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Strofoam Caul For Sound Port Backing
http://luthiersforum.com/forum/viewtopic.php?f=10117&t=23163		 Page 1 of 1
Author:  Chris Paulick [ Wed Jul 22, 2009 8:51 am ]
Post subject:  Strofoam Caul For Sound Port Backing
I was HHG gluing some .050" ebony veneer to the inside of the upper bout for a sound port backing and was thinking of a quick way to make a clamping caul for it. I remembered back to my Discus fish breeding days when I used styrofoam under the aquariums to level them out from uneven surfaces. So I bent the veneer on the Ibex and I glued a piece of Styrofoam to a piece of wood and clamped it up. Perhaps this might come in handy for some other things. I understand this might not work in a situation where a lot of pressure is needed for a long time because the foam will compress and conform to the shape and may loose the clamping pressure. But it seems to work in this case.
Author:  Chris Paulick [ Wed Jul 22, 2009 8:53 am ]
Post subject:  Re: Strofoam Caul For Sound Port Backing
After one hour the strofoam conformed to the shape but it was long enought to let the glue set and hold. But I wonder if this might have possibilities for making contour sanding blocks? Some food for thought and something to play around with I guess.
Author:  Dkeddy27 [ Mon Feb 04, 2013 9:17 pm ]
Post subject:  Re: Strofoam Caul For Sound Port Backing
[That's Clampologie at its best! [clap]
Author:  Chris Pile [ Tue Feb 05, 2013 12:28 am ]
Post subject:  Re: Strofoam Caul For Sound Port Backing
I used to clamps to fit curves from wood roughly sawed to the shape, and then used automotive bondo for a form fit. Wax paper kept it sticking to the guitar.
Author:  Beth Mayer [ Tue Feb 05, 2013 4:25 pm ]
Post subject:  Re: Strofoam Caul For Sound Port Backing
Nice, Chris. I used Friendly Plastic to make my caul for this a'la Robbie O'Brien. It can be re-used if you put your port in the same place on the same shape guitar. If not, just drop it back in the hot water for a couple minutes :)
Author:  Chris Paulick [ Tue Feb 05, 2013 4:53 pm ]
Post subject:  Re: Strofoam Caul For Sound Port Backing
Yeah but you have to have something to do with that foam packaging material. Go Green.. :)
Author:  Beth Mayer [ Tue Feb 05, 2013 11:17 pm ]
Post subject:  Re: Strofoam Caul For Sound Port Backing
I'm all for re-purposing things!!
Author:  Dave Sayers [ Fri Feb 15, 2013 3:40 am ]
Post subject:  Re: Strofoam Caul For Sound Port Backing
I use blue laminate underlay in layers for the same purpose. It can easily be cut with scissors and the glues doesn't stick to it.
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