I have a nearly new resin tray filled with black V3 but the cartridge is nearly empty. When I ordered a new cartridge I got V4. What am I supposed to do with that? Can I mix V3 and V4?
Yes
As for the question in the title : AFAIK once Formlabs releases a new resin they phase out the old one and you can’t get it anymore, unless a 3rd party supplier still has some stock lying around (unlikely a few months after the new version has come out)
When I put in the V4 cartridge I get an error message about version mismatch and the only option is “abort”. How to I override the mismatch?
Set the V4 resin in preform and you’ll get a prompt to override on the printer.
You can absolutely reset your resin tank from V3 to V4! John above me is correct, but I’ll offer a few more details about the process just so it’s clear.
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Make sure you have the new resin cartridge inserted in the Form 2(V4 in this case).
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Make sure you set the print material to V4 in PreForm before sending the part to the printer.
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Send the print to the printer as normal and try to start it.
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An error screen should appear saying the resin in the tank and cartridge don’t match. On this screen we would expect to see a button that says “Ignore.”
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Hit the Ignore button, and the tank will be reassigned to your new material.
Obviously, this is not a process we recommend most of the time, but because these two materials are pretty close you should be OK. That being said, I would still try to scrape out as much of the old material as you can just to be safe.
I hope that helps!
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