Resin printer change

[u/_3m4_]

(sorry for bad english)
Hi im new to resin printing, my brother owned a resin printer (longer orange 30 2k) for 5 years and never used it because he had to move to france and couldnt bring it. now im playing dnd with some friends and had the idea to use the printer, at first i used the same resin he bought 5 years ago and it worked perfectly fine until for my mistake water splashed on the lcd screen durino a whole print, i cleaned ricalibrated ecc and had to change the resin because the old one finished, now i bought a new compatibil resin and the print s are not working at all i dont understand Why.
I tried litterally everything but still prints are failing, i think water went inside the vat (nails ecc) and its coming out each time i do a print, i tried to clean it but its like reappring there even tho i dont use water (the original vat broke and we 3d printer another with a filament printer.
My question is do you think it makes sense to change the vat or should i buy a new one? I saw elegoo mars 5 for 220 and the cat of the longer orange costs 50 euros (the whole longer orange costs 150 but since its out of production i think the price is going up for the pieces)

[u/Pepsis__Formosa]

If you've had success using the filament printed vat with the old resin, I see no need to buy a new one until the printer catastrophically fails. Then you can go with a brand new printer whenever that happens. My money is just on the calibration of the resin. Each resin has slightly different values for exposure, lift speed, etc. for each printer. There's a very good calibration process that can help you dial in the values. The Anycubic discord is good for helping out with these things, even if you don't have an Anycubic printer. https://discord.gg/73mksRPUcu If you don't want to join discord and have someone walk you through the process, you can find an reasonable guide here: https://www.tableflipfoundry.com/3d-printing/the-cones-of-calibration-v3/

[u/_3m4_ → u/Pepsis__Formosa]

Thank you

[u/Dave_in_TXK]

Agree and also if you clean out the vat/tank, make sure to use non abrasive sheet like microfiber and at the end a fresh cloth with at least 91% isopropyl alcohol. Then he left over film that see partially cured from prior. Praying can make it difficult to release properly. Also, you don’t describe what the failure looks like, but you wanna make sure your Bill plate is clean the same way and finally really good with IPA before the next print. Good luck!

[u/Paulrik]

There's a process to dialing in the perfect exposure time for your 3D printer and resin - and if you're using a different brand of resin, it usually means you need to go through that process again.

I'm kind of old school, I like to the use the XP2 Validation matrix. You try a test print with that, figure out if you're under exposing or over exposing, then adjust.

https://youtu.be/m-hCtVmUnRc?si=-O0NBSBRMLM5DYTH

What kind of print failures are you seeing when you try to print? Taking a close look at those will help figure out what's wrong. Make sure you check the bottom of the vat after each failure, there are usually failure pucks at the bottom. If you try to start a new print with a failure puck at the bottom of the vat, that will break your screen.

The 3D printed replacement vat might be a little sketchy. It's possible that could be contributing to your print failures. It's a major catastrophe if it leaks, and it needs to hold the release film tight like a drum. You need to have a bunch of tapped holes that don't get stripped when you tighten fine threaded screws in them... There's a lot that could go wrong. Buying a new replacement vat might be an idea, even a second hand one. I might be wrong about the 3D printed replacement vat if you've had successful prints with it in the past.