Search found 30 matches

by Cation
Sun May 31, 2015 2:19 pm
Forum: Resins
Topic: Resins For Investment Casting
Replies: 57
Views: 51530

Re: Resins For Investment Casting

There's a link on the page that you might have missed right above the pictures:

Contact Us for Quotes
info@bucktownpolymers.com
by Cation
Sat May 30, 2015 8:31 am
Forum: Resins
Topic: Resins For Investment Casting
Replies: 57
Views: 51530

Re: Resins For Investment Casting

by Cation
Fri May 01, 2015 11:11 am
Forum: Resins
Topic: Any resins strong enough for engineering purpose ?
Replies: 12
Views: 16918

Re: Any resins strong enough for engineering purpose ?

ABS types are not a problem. The problem you are starting out with is using bottom up projection through a vat and peeling every layer along with using UV. This limits the viscosity, solids content and curing rate of the resins and composites as well as curing depth. There is a project that is using...
by Cation
Thu Apr 30, 2015 11:59 pm
Forum: Resins
Topic: Resins For Investment Casting
Replies: 57
Views: 51530

Re: Resins For Investment Casting

Bucktown Polymers has a new rinse out resin for investment casting. It does not burn out or melt out. It is rinsed out with hot water. After the cured polymer or rinse out resin (ROR) is coated with the investment and left to dry for two hours the investment is soaked in hot water for 1-2 hours to a...
by Cation
Thu Apr 30, 2015 11:20 pm
Forum: Hardware
Topic: PICO Projectors and Lithography
Replies: 0
Views: 5168

PICO Projectors and Lithography

Here's a good slide show covering how PICO projectors operate: http://www.slideshare.net/Funk98/pico-projector-12565671 The problem that people are having with getting a PICO projector to work with a 3D printer is that the spectra produced by the three LED's or three lasers used (Red (635nm), Green ...
by Cation
Thu Apr 30, 2015 11:02 pm
Forum: General
Topic: Pico Projector base 3D printer
Replies: 5
Views: 8221

Re: Pico Projector base 3D printer

PICO projectors are similar to LCD projectors only that PICO projectors use three LED's vs a mercury lamp as the light source. You can use a unmodified LED PICO projector with resins sensitive to Blue (460nm) light. See this thread for more info: http://www.buildyourownsla.com/forum/viewtopic.php?f=...
by Cation
Thu Apr 30, 2015 10:56 pm
Forum: General
Topic: LCD Resin 3D Printer - 'UV' source
Replies: 3
Views: 6426

Re: LCD Resin 3D Printer - 'UV' source

@CidVilas

See this thread for other options. You don't need a UV LED with a LCD:
viewtopic.php?f=12&t=84&start=210#p9616
by Cation
Thu Apr 30, 2015 10:52 pm
Forum: General
Topic: LCD Projector
Replies: 6
Views: 6609

Re: LCD Projector

LCD projectors are fine for lithography. Some people are just trying to use the wrong resins.

See this thread for the hows and whys
viewtopic.php?f=12&t=84&start=210#p9616
by Cation
Thu Apr 30, 2015 10:36 pm
Forum: General
Topic: Two-photon polymerization
Replies: 1
Views: 3378

Re: Two-photon polymerization

Femtosecond laser sources are very expensive.

Try building an inverse microscope SLA printer. It's good for features down to ~1um without too much expense or effort.

http://openlunchbox.com/smf/index.php?topic=40.0
by Cation
Thu Apr 30, 2015 9:28 pm
Forum: Resins
Topic: Any resins strong enough for engineering purpose ?
Replies: 12
Views: 16918

Re: Any resins strong enough for engineering purpose ?

@ Hugues

If you are able to order 20Kg or more at a time or cover a day or two of formulation time we can blend resins to your specs
http://bucktownpolymers.com/services.html