I learned hard way that you have to: - have GOOD ventilation and don't bother with water washables, - nail down Resin XP2 Matrix test prints, - use BOTH stir

I learned hard way that you have to: - have GOOD ventilation and don't bother with water washables, - nail down Resin XP2 Matrix test prints, - use BOTH stirrer wash and ultrasound, and dry prints for hours before curing to mitigate swelling(marginal effects), - and use 10-15x longer exposure for first layer curing time, for SLA prints. Otherwise resin crumbles apart, leaves ugly marks on surface for first half inch, and so on. If magnetic beds are used, Z limit switch trigger arm must be adjusted too. Support-free is possible, people doing skyscraper towns are to some extent cargo culting.