Homebrew PCBs

Stefan,

The .125" thick ABS vacuum forms without much trouble. Thicker
plastics will also work but it starts getting difficult. Thicker
sheets may need top and bottom heaters and a very powerful vacuum
pump. I've seen .250" ABS vacuum formed at a fabricators plant. It was
a 48" x 96" sheet. The machine was huge and so was their electric
bill!!  I'll stay with the thinner materials...  lol

Tom



--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@...> wrote:
>
> On Tue, 02 Jan 2007 18:12:50 +0100, twb8899 <twb8899@...> wrote:
> 
> > I use vacuum formed parts in my product line. The plastic parts are
> > made from .040" or .060" high impact polystyrene and .060" and .125"
> > ABS. My vacuum forming machines are made by Diacro and Q-Vac. I
> > purchase the materials as I need them so the moisture usually isn't a
> > problem. The Diacro machine is smaller but I have formed .125" ABS
> > parts 6" deep with this machine. My molds are made from hardwood and
> > sometimes I solder pieces of circuit board laminate together to make
> > the shape needed. Most of the molds I use are positive molds but I
> > almost always use negative (cavity) molds for the deep parts.
> 
> 
> I did not know plastic that thick can still be vacuum formed, good
to know!
> 
> ST
>