Hello everyone, Its been a week I have received my Form 2. I’m using Grey V4 resin. I have printed bottle cap prototypes and have noticed a 0.2 mm shrinkage on the ID. I’m new to SLA printing. Any help would be appreciated. Please find below images & STL for reference. Thanks in advance. Best …

Dear Siddhartha: I had terrible deformation from using tough resin. The first and only time I had good fit and dimension stability was when I Used white resin from 2018 cured in IPA for EXACTLY the time in guide (I think it was 10 minutes each tank). used weak UV finishing - about 20 minutes of …

0.2mm is not that bad for 3D printing, but still it could be better. Are the other dimensions as intended? If not, and if this is reproducible across models and resins, you could use the X/Y/Z fine tuning to calibrate your printer. If the other dimensions are as specified, and its only the inner di…

Thank you so much for your suggestions. I tried printing the caps in a different orientation (snap attached) and now the results are much better.[Form2CapRPT1]

I had a lot of problems with parts not matching the dimensions of the drawing. Now, in every design I include a 10mm x 10mm x 10mm cube, that I can check the dimensions of before trying to assemble the printed pieces. For me, temperature has a massive influence on the shrinkage of parts.

Good strategy, this (including measurement prints) is also what a lot of Metal SLM printer operators do in order to quickly detect when something has gone wrong. Which temperature do you mean, by the way? Room temperature, where the printer is in? Resin temperature (this should, at least for FormLa…

Room temperature had a big influence on my prints. We had a lot of trouble with an air conditioning system that I always had turned off when I printed and when another user had turned on while printing.

IPA is bad for parts. I have stopped using it ages ago. [image] Replacing Isopropyl Alcohol with Yellow Magic General Discussion Several of us ( @KenCitron , @Donal_O_Donohoe , etc.) have been looking for a replacement for Isopropyl Alcohol. One product that seems to show pr…

Thanks again for your advise, The 3 points suggest by you worked perfectly for me. I used grey v4 resin and a nail curing lamp for 15 mins. Best regards, Siddharth

Wow - learning a lot here! Temp, resin and UV all important. Grey sounds really ugly to me. Can anyone who has tried both white and grey comment on relative merits/demerits of either? Thanks, -TP

Interesting Updates on Temp, UV exposure, and water found after my last post: Formlabs has more information posted on “post-curing”: They recommend curing at 60C in 405 nm UV for 15/30/60 minutes for clear/opaque/fancier resins. https://support.formlabs.com/s/article/Form-Cure-Time-and-Temperatur…

Shrinkage issue on my Form 2

Support & Troubleshooting

KenCitron November 29, 2018, 4:41pm 8

IPA is bad for parts. I have stopped using it ages ago.

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Shrinkage issue on my Form 2

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