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Helping a friend set up his Photon and we're not able to get the test cube to stick to the bed. We're not hearing the layers "pop" so nothing seems to be sticking to the bed at all. We've tried increasing the bottom exposure to 80 and 100 seconds. We've leveled the bed several times using the paper method which works on my Photon, and we've also emptied the vat, tightened the FEP, and verified that the frequency is around 335Hz, which is within the recommended range. I didn't notice any extra layers on the FEP when we tightened it, so I don't think that's causing the issue either. We've verified that the UV light is working. Is this potentially an issue of a bed that needs to be sanded?

Update: 120 seconds seems to have worked, but seems excessive for Anycubic Green. I'll have him run an exposure test to get numbers he can use

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After yesterday's success, I decided to go a bit bigger. I'm printing his base now and intend to use him as Gulgotar in Lord of the Rings: Journeys in Middle-Earth

EDIT:
Resin used is Elegoo Grey

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Finally getting the hang of supports and such thanks to this group and videos from Nick.

EDIT:
For context, I had been having issues with these models separating from supports at the elbows and at the bottle in the right hand. I had one successful print out of 8 prior to these. I Increased the contact depth (I think that's what it is?) from .2mm to .4mm and added a few extra supports at the elbows and bottle. The supports come off just as easily as the .2mm supports during cleanup. I was also able to hit a few islands and overhangs before the validator caught them thanks to the videos from Nick.

EDIT 2:
Resin used is Elegoo Grey

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I'm having a lot of bad luck with my prints. I've gotten one successful print of this model in about 7 or 8 attempts, and that was the very first one. In this batch of three, one had the left arm flattened, one had the right arm flattened, and one had the right elbow flattened. In other batches, the right arm shifted, was flattened, or the bottle in his hand was flattened. These latest three were rh through the Photon File Validator before printing.

This is Elegoo Grey. 8 base layers at 50s, regular layers at 12s, off time 6.5. Assuming I'm reading this correctly, my firmware version is 4.2.3?

Am I doing something wrong with these prints? I've leveled my bed the "user manual" way a few times and the Flint Read method once (the most recent leveling attempt), and that seems fine. I know this model can turn out okay as I've printed it fine one time, so this just baffles me

EDIT: It also looks like the cloaks and left elbows had some failures. I can post my support settings shortly (Update: posted)

EDIT 2: Added pic of an older failure where the arm/bottle was flattened and it looks like part of the other arm was briefly affected at the same layer(s) as well

EDIT 3: It looks like all of the failures are where the model separated from supports. To help diagnose the issue, I've added my support settings, stolen from https://docs.google.com/…/1fHvgkgr5lavHzdf2mHjA_q68Zoc…/edit

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I've been printing fine for a few days but when I try to print a Benchy directly on the build plate, it fails. I'm printing directly on the build plate, whereas my other prints were on supports. I haven't changed any of my settings, but after the first two failures I did clean out the vat and relevel the bed. It seemed like I could hear the pop of layers when the print first started. Do I just need to increase the base exposure time for the first 8 layers? Right now I'm using the included Anycubic Green resin at 50s for the 8 base layers, then 14s for every layer after that. I'm also printing with benchy parallel to the long side of the plate. Is that potentially causing my issues? Should I rotate it to be parallel to the shorter sides?

Edit: I also tried 50s for base, and 10s for all other layers

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Obviously a lot of paper towels are used during cleanup of prints and vats, so what is the cheapest way to handle that? Would https://www.amazon.com/…/B001AZKS4W/ref=cm_sw_r_cp_api_i_V0… be good enough or do paper towels need to be a little higher quality to absorb the messes we create?

Alternatively, do you guys have better ideas for managing cleanup instead of tons of paper towels?

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Just wanted to give you all a shoutout. A few days ago I popped in to ask about the weird jiggling on my test print with my Photon and you all jumped in to reassure me that it was all normal. I finished that print and cured it and it turned out pretty well. I made a few more mistakes after that, like not setting exposure times or the correct build plate size in ChiTuBox, and then I had a failed print where the models got pulled off the build plate. I cleaned everything up, releveled my bed, and started a print. I woke up to these being done, and they look fantastic. I did some quick cleanup on my bard mini but didn't have enough to time to do the others, so I'm going to let them cure and see how support removal feels after that. I'm already printing a backup set just to be safe.

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Hey guys, I'm familiar with FDM printers but new to resin printers. I set up my Photon today and I'm currently printing the model included on the SD card. I noticed that the print seems to stick and pull a bit for each layer. Is that normal, or do I have some issues with bed leveling or where I've set my Z to 0? It also looks like the model was trying to print a panel that says "PHOTON" and that may have broken. Is that just a risk you take with resin prints, or is it related to this sticking?

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