A surgical guide is a precision instrument that happens to be printed. Treat it like a toy and it will fail you at the worst possible moment.
You don't need the most expensive machine — you need a validated chain and honest accuracy targets. Every link, from scan to resin to post-cure, either holds tolerance or quietly destroys it.
This is the checklist I run before any guide touches a patient, and the budget-level setup that reliably hits clinical accuracy.