We all know what you are referring to... those clear bodies which seem to have so much
more variety than hard bodies. I get beat over the head with this everytime I mention lexan,
so before someone else does it to you, I'll mention it. PETG is much easier to work with than lexan.
For some reason the difference is so vast that it has to be brought up, but to me, it's just
another clear body. I have a vacuformer, and a bunch of bodies to work with, but I haven't
found time to even clear my track lately. I'm with Joez on the detail. Hard bodies have been
so cheap I haven't felt vacuforming was worth the effort.
On a different note:
Has anyone tried using a reverse mold and pressure, instead of vaccum?
It just seems like we are literally fighting physics using vacuum.
actually a reverse "buck" works really well to give lots of detail to a vacuum formed body. the problem is creating said "buck". there are rubber compounds which can be poured around a body, like a hot wheels, matchbox, etc. but I don't know where to get it.
and the fact is that even with a vacuum, you are still actually using pressure to do the work.
removing the air from under the "buck" allows the normal barometric pressure to push down on the hot, melted plastic and form the body. it is just the speed at which you remove the air and volume of air removed that gives the illusion of a vacuum.
and you are correct, although the toughest material, Lexan also has a higher melting point and usually distorts from the very beginning of the sag. this is why most folk use other materials. styrene, for instance, melts at a much lower temperature and holds the heat well while "pulling" the plastic over the "buck". all in all, it is really just a lot of work and such bodies are usually only desired by racers wanting to go really fast and just have a 'cover' over their chassis to reduce air resistance.
Thanks for the input guys:wave: What I am shooting for is a detailless flowing body. like a AFX shadow front section a flat middle and front section of a shadow turned the reverse direction. I guess like an aerodynamic hump. long enough and wide enough to cover a AFX chassis