rkundla

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rkundla
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  • I have a new investment that I like with the 3Dfacture castable green resin - Prestige Optima! Using their 38:100 ratio and deionized water, I've had excellent casting results using a 3 minute isopropyl wash in an ultrasonic with 30 minute of UV air…
  • I would be curious to know what the largest brightness setting would be before you started to see the side effects of reflection inside the light path? That would be the optimal brightness setting. Contrast would need to be situated as well since it…
  • AD001, So you went to a higher Kelvin color temp, which favors the blue side of the spectrum and you saw that much increase of 405 nm with your meter? That is good to know! The DLP projector is a curious thing. You have a light source that emits a …
  • Little tweaking here, tried out Gravelle's masking program (more on that another time) and here are some prints! Back in business with the 3Dfacture green castable resin. :-D
  • Good review. So is the magenta resin just their clear with pigment? The color loss seems like it would be a mixing issue when the bottle was new. Maybe more resin and less pigment? I need one of those paint can mixing machines to really give my resi…
  • Cutting exposure didn't help, so I had to put the original UV filter back into the projector to deal with the overcure. I was able to expose my full small sized build plate at 5 seconds per layer which was nice. My photoresistors are supposed to arr…
  • The right bulb certainly makes a difference... After ordering a new bulb and installing it last night, I gave it a test with the 3Dfacture castable green using the last settings when the bulb went out as well as that incorrect bulb. It was "overcure…
  • Not yet!  I have to source that diode still. I was just going to search your thread to find out which one to buy so I could put in an order this weekend.
  • It did cure resin, but I noticed my uniformity was worse than before because I tried to print a full plate of rings. Maybe it made the center 'hotter' due to the smaller diameter of the reflector mouth?
  • I decided to check the bulb type because I was still a little skeptical. Sure enough, it does appear to be a genuine OSRAM bulb, but it is the wrong reflector size (a size smaller). Return set up with Amazon and a bare properly sized bulb has been …
  • It didn't melt but is sure gives off some chemical smell. I did disassemble the old bulb housing and see how to install a new bulb, so maybe I will buy just the bulb next and replace it that way. :D
  • I bought one on Amazon and it arrived today. Hard to tell how much of a knock-off it is. I noticed the bulb housings are not exactly identical. It is the part number supposedly for my DH913 but I dunno... It is running in the projector right now. I …
  • Welcome Manuel! You will find that the forum is a treasure trove of information regarding the Draken and how to use it. Feel free to ask any question you have on the operation of your 'new' printer and we look forward to seeing your printed work. :-)
  • When I speak consistency, it usually revolves around resin, FEP and build plate. The other part is model dynamics in terms of forces during peel (how much surface area, adhesion, etc.) All resin printers that are multi-purpose will run into these is…
  • I tried to do an experiment using both PFA and skivved teflon on the flex vat. I found the skivved teflon released easier than the FEP/PFA, but it is somewhat opaque, so there is a concern on fine detail. I hate to think I am still screwing around w…
  • I tried to do the static cling version of FEP using one of my 3Dfacture orange vats and I was getting resin underneath the film with two different types of film. While it does cling, I think the hydraulic force of the peel does cause the film to wri…
  • I am looking forward to more jewelry print results. If I can get the same quality of prints on Weaver with a smaller footprint than my Draken, I would be very interested.
  • @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