#1
I've recently devised a rather exotic guitar shape or two and made the bodies from wood, however the more I look at them the more I doubt the wooden version will hold up to any abuse do I was thinking of making a mold of the bodies, then getting some form of pourable 2 part acrylic/plastic that would be strong enough to hold up to the tension of being a guitar and maybe hold up to a less supportive shape. I suppose I could also add in some form of mesh netting or metal wire inside the mold to support the guitar shape if need be.
Quote by R45VT
Bastards.
#2
According to wikipedia, what you need is Poly-methyl-methacrylate + MEKP as a polymerisation catalyst. **** knows where you get that stuff from. Plus you'd need to be able to heat it up to 105 °C.

To be honest, I'm not even sure it would be that much stronger. Oak wood appears to have a much higher Young's modulus than Acrylic, plus the difference in UTS between wood and Acrylic is not massive. I don't think it's really worth doing to be honest, unless you just want a see-through guitar?

http://www.engineeringtoolbox.com/young-modulus-d_417.html
EH


"Show me war; show me pestilence; show me the blood-red hands of retribution..."
#3
http://www.crystalclearepoxy.com/shop/uv-poxy-clear-for-casting/
This looks like it just has the chemical hardener with it and it only has to set at 77F. Also you have to remember that what I have is oak ply, I don't really think it has a grain pattern. But I would assume that if I were to use this acrylic stuff with some steel mesh in it would hold up better but I'm not sure.
Quote by R45VT
Bastards.
#4
Quote by Viban
http://www.crystalclearepoxy.com/shop/uv-poxy-clear-for-casting/
This looks like it just has the chemical hardener with it and it only has to set at 77F. Also you have to remember that what I have is oak ply, I don't really think it has a grain pattern. But I would assume that if I were to use this acrylic stuff with some steel mesh in it would hold up better but I'm not sure.


I really don't think the steel mesh would make a massive amount of difference, depending on how thick it is obviously. Plus you have to make a 2-part mould, make sure everything is properly drafted so you can get it out... I just don't think it's really going to offer that much of an advantage over just making it out of wood to be honest.
EH


"Show me war; show me pestilence; show me the blood-red hands of retribution..."
#5
Quote by eddiehimself
I really don't think the steel mesh would make a massive amount of difference, depending on how thick it is obviously. Plus you have to make a 2-part mould, make sure everything is properly drafted so you can get it out... I just don't think it's really going to offer that much of an advantage over just making it out of wood to be honest.

Well I planned on doing a dental algenate mold, then I plan on cutting it off of the form with some form of knife then just seal up the cracks, but I plan on going through and figuring out the bracing, maybe some rebar through the weak areas just to give it a spine.
You should know by now, I like being difficult
Quote by R45VT
Bastards.
#6
They are strong enough for use in construction. Acrylic casting resin is a pourable
compound and hence is used for casting of parts and making molds.
Last edited by SolomonF at Mar 27, 2013,