Re: Small Injection molding unit?

--- In CAD_CAM_EDM_DRO@y..., "Robin S." <lasernerd@h...> wrote:

> Dan,
>
> Does this book go into mold making at all? I'm going into tool and
> die next year at college, and will probably apprentice as a mold
> maker - but damnit, I want to know _now_! :)

Hi Robin,
The book I have is 127 pages long and he devotes 44 pages to a series
of simple molds useful for making things like control knobs. It's a
start but it won't tell you something I'd like to know like how to
build a more complex mold to handle something like a G scale truck
sideframe or bolster.

As for automating the beast, the heart of it is the heater block and
piston. I'm sure a feed system would be easy enough to work out if
you skiped the milk jugs and used plastic pellet feed stock and
moving the piston via hydralics would in some ways be simpler than
the current lever arrangement. The hard part would be getting the
mold in position, removing it after the shoot, and removing the
finished product from the mold to start the cycle over again.

Dan Eaton (Saint Louis, MO)