Re: 3D Printer

Chris,

Do you have more info on the UV-curing PU-glue, availibility, price,
curing time, viscocity etc. Basicly a company that sells the stuff so
I can dump them with questions.
Thanks

Hugo

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Chris L <datac@l...> wrote:
>
>
> "Ian W. Wright" wrote:
>
> >
> > This is a fascinating subject - especially as I'm just playing
around with
> > the Gingery design for an injection moulding machine which is,
itself,
> > basically a big glue gun for plastic! The biggest problem would
seem to be
> > the regulation of droplet size but perhaps you could use a kind
of cylinder
> > and plunger but with some form of solenoid to tap the top of the
plunger and
> > make it squirt a 'standard sized' drop of wax out of the nozzle.
>
> Exactly, but you know, I've Got it ! You can find "metered
dispensers" on E-bay once in a while. You need to use really thick UV
cure urethane. The UV cure stuff is one part so the dispenser does not
> have to mix for one thing, AND under UV light, the stuff sets up
like Pronto ! The metered pump can deliver the little Fly poop size
dots you need to build up an object.
>
> This UV cure product is the same stuff you see on these little
badges and tags. Lot's of you have them in that little square hole on
the front of your PC tower. Smooth, curved..... Ok. here's another
> place youve seen it, The "NEON" label of a Dodge Neon. The
companies that make those things drop a fixed amount on top of
graphics with pick and place type equipment. It flows to the edge and
they Nuke
> It with UV.
>
> I've done this stuff with two part urethane right on top of vinyl
Graphics ( I got one of them cutters too). Takes about 15-20 min to
set up though and it is real fussy for humidty and temp. Almost
> need a clean room.
>
> But, I think the UV cure stuff is the ticket.
>
> Homebrew Rapid Prototyping here we come.
>
> Chris L