---------------------- multipart/mixed attachment Thanks Ron! For the mathematically challenged, how do you go about=20 calculating that radii? Actually the sacrificial piece sounds like a good=20 plan but I'd still like to know how to calculate it anyway. For this=20 sacrificial piece, is it better if it is thicker and cut with kerfs in=20 order to make the bend? Greg P.S. it's a cut off beam At 01:50 PM 6/2/2003, you wrote: >>I am in the process of making a new form for gluing up a laminated beam.= =20 >>The desired shape is a simple arc. I have sliced 8) roughly 12"x48"x3/4"= =20 >>sections out of a piece of MDO and stacked and affixed them together. I=20 >>drew the simple arc on the top piece and followed it with a bandsaw. I=20 >>now have what I thought would be a good form for gluing up my laminated=20 >>arc beam. Why don't the two pieces of the form draw the laminates=20 >>together completely and what can I do about it? I find that the laminates= =20 >>are tight at the ends of the arc and there is a gap between the laminates= =20 >>in the middle of the arc. Any suggestions? >> >>Greg Newell > > >The inside and outside cauls don't fit the laminate stack because the=20 >curves should be of different radii - differing by the depth of the=20 >laminate stack. You can either mark the smaller radius arc on the inner=20 >caul and re-cut the curve a little tighter like it should be, or you can=20 >use either the inside or outside cauls alone with a sacrificial piece of=20 >wood as a flexible caul on the other side of the laminate stack, and use=20 >lots of clamps. It depends on what you need to end up with. That are you=20 >building? > >Ron N > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives > Greg Newell Greg's piano Fort=E9 mailto:gnewell@ameritech.net=20 ---------------------- multipart/mixed attachment--
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