Search found 25 matches

by Mattasmack
Tue May 16, 2017 11:21 pm
Forum: LittleRP
Topic: Very long cure times for MakerJuice SF for LRP, seems more translucent
Replies: 6
Views: 4455

Re: Very long cure times for MakerJuice SF for LRP, seems more translucent

... Edit: A main reason I asked this was because the resin itself looked much thinner than I remembered, and I was wondering if MakerJuice had changed their formula. I didn't want to waste 10 hours tracking down a non-existent bug because MakerJuice changed some slight thing with their resin. I'd h...
by Mattasmack
Thu May 11, 2017 7:55 pm
Forum: LittleRP
Topic: Very long cure times for MakerJuice SF for LRP, seems more translucent
Replies: 6
Views: 4455

Re: Very long cure times for MakerJuice SF for LRP, seems more translucent

You should be able to figure the change in exposure time from the change in printer resolution, right? If, say, switching vats changed your xy resolution from 25 um to 50 um, then each pixel is covering four times more area (25x25 um to 50x50 um), so exposure time should be four times longer as well...
by Mattasmack
Sat Jan 21, 2017 1:11 am
Forum: LittleRP
Topic: Masking Troubleshooting & NanoDLP Host?
Replies: 5
Views: 5336

Re: Masking Troubleshooting & NanoDLP Host?

Thanks for all the info! Oh jeez, I tried using a closeup lens on my current projector and I just could not figure out the focus and distortion problems. I eventually decided I didn't know what I was doing and shimmed it instead. Even though I mostly print jewelry, I don't like losing a portion of t...
by Mattasmack
Mon Jan 16, 2017 5:42 pm
Forum: LittleRP
Topic: Masking Troubleshooting & NanoDLP Host?
Replies: 5
Views: 5336

Re: Masking Troubleshooting & NanoDLP Host?

Hi Head-Zonk, You mentioned a ribbed surface; what did that look like? I had problems with layer-to-layer banding at one point (I posted a couple photos in this thread: http://www.buildyourownsla.com/forum/viewtopic.php?f=19&t=5062 ) that turned out to be due to inconsistent exposure times. If y...
by Mattasmack
Tue Dec 20, 2016 12:47 pm
Forum: LittleRP
Topic: Projector Mod for LittleRP Success!
Replies: 6
Views: 4666

Re: Projector Mod for LittleRP Success!

Congrats! Were you able to get the cover back on the projector with the color wheel in its new position, or do you run with the cover off?
by Mattasmack
Thu Oct 13, 2016 6:15 pm
Forum: LittleRP
Topic: LittleRP and Raspberry Pi 3
Replies: 6
Views: 5872

Re: LittleRP and Raspberry Pi 3

I run my LittleRP with a Raspberry Pi 3 and the Photonic3D software (previously known as Creation Workshop Host). Version 1.0.0 worked fine; the current version 1.0.5 isn't working for some reason I haven't figured out yet. But the problem is in software somewhere, not in the LittleRP. It didn't wor...
by Mattasmack
Thu Aug 25, 2016 8:27 pm
Forum: LittleRP
Topic: Please Help LR with PJD7820HD
Replies: 3
Views: 3232

Re: Please Help LR with PJD7820HD

Hi Nitros, What do you mean by "came out oval"? I recognize the calibration block in your first photo and don't see anything obvious wrong with its shape. I don't know what the other objects are supposed to look like, so I've no way to tell if they have problems. In general, if the prints ...
by Mattasmack
Fri Aug 05, 2016 9:33 pm
Forum: LittleRP
Topic: my first print Uhmmm!
Replies: 1
Views: 2613

Re: my first print Uhmmm!

Congrats! Getting anything at all out of the printer means you're on the way. That looks like the calibrationtarget_solid.stl file; if so then you've at least gotten something recognizable to start from. Certainly something is wrong and you can improve on that result. You need to troubleshoot, but y...
by Mattasmack
Fri Aug 05, 2016 9:17 pm
Forum: LittleRP
Topic: Castable resin recommendation
Replies: 2
Views: 3253

Re: Castable resin recommendation

Head on over to the resins forum; the top thread there is a discussion on resins for casting. Give at least the last page or so of it a read, and see if that answers your questions.
by Mattasmack
Tue Aug 02, 2016 5:00 pm
Forum: LittleRP
Topic: Any DLP project are good
Replies: 8
Views: 5916

Re: Any DLP project are good

It's not a DLP projector ... it might not pass the violet and UV wavelengths of light needed to cure most resins. (But maybe it will! I'm not entirely clear on what SXRD imagers are, but at least it's not regular LCD technology which almost certainly won't work.) If you are thinking of buying it, I ...