rkundla

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rkundla
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  • @Andrew_3Dfacture it was a test to see if I could impart some of the sharper detail from the SolusCast resin while still getting the benefits of the cleaner burnout of the B9 Emerald. Since I didn't have a direct comparison of the same part, it was …
  • Did an experiment with 4:1 B9 Emerald:SolusCast Here is a closeup of the 4:1 mix detail (printed at ~30XY and 50Z - no antialias): I did a casting test with 3Dfacture castable, B9 emerald and the 4:1 mix using Optima investment and their bu…
  • Another good training video on how to re-do your PDMS in the vat. I will have to try the static cling version of FEP the next time I revitalize my vat. I've moved away from the flex vat due to some issues I was having with release and first layer co…
  • Not just silicone sealant, but any residual PDMS in the vat will cause the area around that residue to not fully cure. My worry about using non-adhesive FEP is that the pull forces of the resin to the FEP may be stronger than the cling forces of the…
  • Thanks Andrew - I hope you have a good Labor Day yourself! I know I am looking forward to having the day off. :-D Any new products on the horizon yet? 
  • It's been a while since I last updated my work. Here is a set of earrings I am making for the annual fundraiser for my kids school. and the final result when cast in sterling silver, assembled and the gemstones are set
  • Good video Gravelle!  The one thing I am not sure about is if near UV output tracks 1:1 against the sensitivity region of the photoresistor, but I don't think there is any reason to worry since you can adjust the exposure to compensate for it. It wo…
  • I will say that before I knew that I needed to adjust my exposure settings depending on which side of the vat I was printing on and now I can confidently print anywhere in the build area without adjusting the exposure. And that is worth every minut…
  • How does it work then when printing over the entire projection area? That is the real test of whether your mask works properly.
  • Great video and what a good mod!  It is easy enough to do and it doesn't require you to open up the projector body other than if you were replacing the light bulb. I like the purple glow. I should look into picking up some of that filter glass to se…
  • Nice! Any photos to share on the forum? Are there any concerns about importing into the US?
  • I will be very interested in how that works. Almost all visible light will be blocked, so how that will look at the vat will be very interesting. I wish there was a spectographic reading of the lamp in these projectors to get an idea of just how muc…
  • 1/3 the time is a nice improvement. What resin and what were the before and after times for comparison? If you can't get the heat out, you will shatter interior lenses. If you can cut glass, get your hands on what they call a hot mirror and cut it t…
  • Okay, I see now. The trigger I saw was that if the projector was connected to the control board and the controller was not powered, it would not work. If I pulled power from the projector, or in your case, disconnect the blue serial cable, and turn …
  • Okay, so the different you made is that you did not plug the USB back in step 2 but waited until step 6? Regarding your power config, I don't think the power supply to the projector is the issue, but the power supply in the Draken feeds 12V to the c…
  • Interesting Joseph. You powered up the printer first, then connected the USB cable?  From what I have seen, if you power on the printer, the controller board will get powered up from the supply in the Draken, not from the PC. I wonder if that might …
  • I've done some testing with a Viewsonic projector on loan to me and have a work around I'd like people to try. This assumes the blue serial cable is connected to the Draken and your Viewsonic PJD7820HD projector and you are using my latest firmware …
  • My take is that it is more of a greyscale generator using empirical observation of a test run than direct light measurement or attempting to make a mask using a picture of the light output. I think you need to run it a couple of times to dial in the…