I know exactly what you mean. After reading about other printers and their problems (even Form 2, that has an expensive resin tank and consumables, is prone to failing from time to time), or Prusa MK3 (a friend of mine got one and it came full of bugs), I realized the hole 3d printing market/processes/etc,… is still not very mature. But it´s damn anoying to have this sort of randomness. I´d try the basics again:
- bloody screws
- the table where Moai is mounted is firm? have you tryed moving it a bit (yes, I know…)?
- power source is stable?
- cables, all of them
- VAT (I´ve heard cloudy/worn out VATs may give problems)
- resin is clean? free of any debrees? deaired?
I´m pretty sure I´ll make a full check list for myself after all these problems. Another thing (and I consider this my mistake), I´ve added to many new variables at once. I´ve started with blue resin + PDMS VAT and got only good prints. But, decided to get hi-temp resin, without having much “mileage” and without being sure my chamber was properly heated. Then, I though it would be just a resin problem (and I still think my flesh hi-temp has something wrong, maybe due to transportation or whatever) and got gray-hitemp + new fep VAT + hew adjustable plate. Simply too many untested variables.
But, I also think the way the new fep vat and even gray hi-temp resin are advertised gives the idea that they´re “improvements”, but the fact for me is that they´re different approaches and harder to work with, also much less tested.
Anyway, if I can help you, count on me.
p.s.: I´ve spent almost two liters of resin going through all these troubles and variations and I pay almost 100% taxes over the resin price, ouch! That really sucks.