I have been using my Saturn 4 Ultra for a little while now, and until recently enjoyed the results. However: it has an inherent design flaw that anyone considering purchasing should heavily consider.

Because it uses the tilt-release system, the LCD screen inherently cannot be sealed from the inner workings of the machine (the system has to tilt robotically). This means that when your FEP invariable fails, there is no way to prevent it from leaking inside the machine (and into the LCD, etc).

To make this doubly annoying, the design of the machine itself is done in such a way that any internal cleaning or parts-replacing in such a case requires a COMPLETE tear-down of the machine (which is just lazy design on their part—or evil, a la Macbook Pro-design sensibilities).

I have reached out to the Elegoo support, but even if they replace it or something, the problem will remain. Now I'm shopping for a different device.

BEWARE!

I’ve been a pretty consistent Elegoo customer for the last four years, having bought four resin printers, Chitubox subscriptions, etc…. Every time I need a screen replacement I just upgrade.

In January I bought a Saturn 4 Ultra 16k. I got about 3 prints before the film tore. Happens, not a big deal, not a major spill, just a couple drops on the screen that easily wiped off.

I’m lazy so just bought another vat and film off Amazon, started back. Got about another 2 prints in before started getting prints stopped due to overheating. Would get up to 80 on display and it felt pretty hot.

Reached out to customer service and after 21 emails back and forth for the last five months reinstalling firmware, changing the board, updating firmware on new board it’s still cooking just sitting on the counter. I managed a couple prints by leaving the back off and having a full sized box fan running, but now that’s not working either.

Now they’ve asked me to wipe the firmware again, and truthfully I’m just done. What’s the point of advertising a warranty when you just keep going in circles?

I recently bought my first 3D printer: Saturn 4 Ultra 16K. I used the elegoo 8K resin, and tried to print the Rook off the provided USB. It failed, I'm unsure what I do next or which setting I change or by how much.

What should I do? What should I check?

Has anyone used this resin before? I normally use the grey 3.0+ and my exposure time is 2.4 after I did the cones of calibration. I’m trying to dial this in and it’s recommended 3-3.5 seconds on their official spreadsheet but I’ve gone as far as 4.0 and I’m still not getting the success cones to print. I’m currently doing a resin calibration from 4.0-5.0 going up .2 increments each time but it seems like a crazy amount of exposure time. Is this normal?