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Speed vs strength vs surface finish vs other material properties
We run FDM machines printing ABS with dissolvable support material which have low surface quality but are fast and cheap parts
Polyjet for good surface finish, clear parts or rubber polymer parts
SLA for large bits with good surface finish or optical clarity
SLS for nylon / nylon with glass fill for parts of high strength or thermal capability (200deg ish)
There's some good info on these topics here:
mcmyk
Haha yeah lulzbot is one of the more expensive hobby FDM machines, there are others you can get to run multiple extruders though (Prusa etc)
Formlabs is great if you can deal with the resin and post process the UV curing and like the properties of the SLA material.
We use a mix of FDM machines, SLS, SLA and poly jet depending on what it’s for