Thanks jkao! Can you open the attached settings files? I’ll include the file used for each of the two jobs (I renamed the Settings1.csv file to Differential_Job_1_ABS for clarity).
One thing I noticed tonight is that a little bit of the teflon in the 3DM PSP vat started to lift (after about 17 hours of print time done over two days). It’s still usable, and it is the version 1 vat so the v2 might hold up better – but could be these large prints are hard on the vats?
To answer your questions —
(1) The print failed on the second print job when the lift height was 5mm and succeeded when it was 10mm. The first print succeeded with the 5mm lift heights noted in the CSV file but when I used the same settings for the second job, it printed about 2mm of the models before failing. I changed all the lift heights to 10mm and that worked.
(2) Half gut instinct. I had tried to print a large flat object (4×6″ or so) with MJ G+ with lift speeds of 20mm, 10mm, and 5mm. They all stuck to the vat instead of the plate. I picked 10mm/min for the 3DM-ABS attempt because I figured it should be quite slow to handle the large surface area, and I figured if it didn’t work at 10mm/min (which is really slow when you watch it) it probably wouldn’t work at 5mm/min (which is glacially slow when you watch it). The resin stuck to the vat so strongly that next time I’ll try 20mm or even 30mm lift speed.
(3) I figured the gears might stick to the plate because they aren’t very big and the shrinkage of this resin is supposedly low. I didn’t think the stand would work though… I raised it up so that if the gears stuck to the plate I could let it carry on and try printing the stand overnight while I was asleep, and if the gears detached I could stop the print before I risked wasting a lot of resin printing the stand. I figured it would be a good opportunity as well to evaluate how well the supports came out so that if I had to run it all again, I could get a feel for the size and shape of the supports I should use for 3DM-ABS. Short answer – to try and get as much info out of the print attempt as possible. It was overly ambitious trying to print so much at a go considering my bad luck with the Makerjuice, but I guess I didn’t want to do ten separate print jobs.
The resin stuck to the build plate so well that now I’m not surprised the print succeeded. Gentle prying on the parts didn’t get them off, I had to forcefully shove the metal scraper under the base of the gears to get them off. The stand that was elevated on the supports, it was stuck on there so strongly I had to slice the part off the supports to remove it, then scrape the support remnants off after the fact.
I only have the QU-BD extruders from their Kickstarter. I was going to put together a DIY printer with some OpenBeam and Ramps 1.4 hardware but then a friend gave me his Cube printer so I haven’t even powered up the QU-BD. A buddy convinced me to start working on that again after I sold the Cube. You have a Taz as well right? A friend of mine wants to add one to his printer farm, would you recommend it?
