Search found 45 matches

by jkao
Sat Apr 23, 2016 2:25 pm
Forum: Creation Workshop
Topic: New Creation Workshop RPi Host
Replies: 36
Views: 43024

Re: New Creation Workshop RPi Host

So I've built my DLP printer and it works in CW, but there seems to be some trouble connecting to it through the web dashboard in CWH. I've plugged my Arduino/RAMPS into the raspberry pi in both USB ports and there's some acknowledgement LED on the Arduino, but it won't start. If I click start, a m...
by jkao
Fri Apr 22, 2016 12:36 am
Forum: Resins
Topic: Castable world best priced high quality resins.
Replies: 55
Views: 49756

Re: Castable world best priced high quality resins.

Is the 0.2% shrinkage you list in your TDS for Form resin linear or volumetric shrink?
by jkao
Wed Apr 06, 2016 12:52 am
Forum: Resins
Topic: How much ml is a drop of FTD pigment?
Replies: 0
Views: 3431

Re: How much ml is a drop of FTD pigment?

Drops are an inaccurate measurement since dropper size, temperature, etc... can all impact this. I would recommend pigmenting between 0.5% and 2% by weight or volume (both pigment blends and resins are in the 1.1-1.2 density range, which is close enough to be the same between weight and volume at th...
by jkao
Fri Feb 26, 2016 1:49 am
Forum: General
Topic: Google Hangout
Replies: 4
Views: 10852

Re: Google Hangout

If you do that, I suggest also hosting slackin (https://github.com/rauchg/slackin) somewhere so that people can easily self-register for the chat.
by jkao
Wed Feb 24, 2016 4:37 pm
Forum: Resins
Topic: Synthesizing Resin
Replies: 5
Views: 6669

Re: Synthesizing Resin

Cool! Can you tell us what pigment you eventually used and what resin you dispersed it into? I"m particularly interested in your mention of "carbon allotrope" in the your photos, although that description seems somewhat generic since carbon forms many allotropes (e.g. diamond is an al...
by jkao
Tue Jan 19, 2016 10:51 pm
Forum: Display Devices
Topic: led that DO NOT cure resin
Replies: 1
Views: 3636

Re: led that DO NOT cure resin

I think that almost any 2700K LED will serve your purpose. I have my printer room lit up with 5 of these: http://www.homedepot.com/p/Cree-100W-Equivalent-Soft-White-2700K-A21-Dimmable-LED-Light-Bulb-BA21-16027OMF-12DE26-1U100/205054835 and have no problems with unwanted curing, even for insanely fas...
by jkao
Tue Jan 19, 2016 12:45 am
Forum: Software Forum
Topic: SLC 2 PNG
Replies: 8
Views: 10558

Re: SLC 2 PNG

Works like a charm, thanks!
by jkao
Sun Jan 17, 2016 7:20 pm
Forum: Software Forum
Topic: SLC 2 PNG
Replies: 8
Views: 10558

Re: SLC 2 PNG

Nice! A few tips to those who might try to use this: Here's an example of a run that will output slices in the default frames.zip file: slc2png -r 90 -s -f GoPro-Frame.slc Note that the parameter to r (XY resolution) must be an integer. Shahin, a few asks: ⋅  Would it be possible to allow ...
by jkao
Fri Jan 15, 2016 9:15 pm
Forum: Resins
Topic: Inexpensive UV Cure Resin
Replies: 1
Views: 6341

Re: Inexpensive UV Cure Resin

Interesting. SunCure UV 2000 appears to be a type of BAPO photoiniator with similar characteristics to the "819" family of photoinitiators that are sold by various different companies and is commonly used in 3D printing resins. https://www.docketalarm.com/cases/PTAB/IPR2013-00049/Inter_Par...
by jkao
Wed Jan 13, 2016 3:01 am
Forum: Resins
Topic: Resin Features & Properties Wish List
Replies: 16
Views: 12174

Re: Resin Features & Properties Wish List

There are no standardized tests that I know of, but I did devise 4 tests that can be run in a relatively standardized way for the following properties: Cure Depth Film Adhesion Plate Adhesion Ratio Liquid Immersion Suction Only one of which actually requires printing (the plate adhesion ratio). The ...