I have an FDM printer, I printed ABS for years.
Since SLA printers became really cheap lately and are able to print finer details, are there resins out there as strong as ABS/PLA?
3D Printing Stack Exchange is a question and answer site for 3D printing enthusiasts. It only takes a minute to sign up.Sign up to join this community
SLA prints are usually very glasslike in their internal structure and thus are often quite brittle: They tend to break with a very distinct, sharp failure mode. Their compression strength is often high but their tensile strength is limited, and their resistance to side loads is low.
Due to the printing method solidifying the resin layer by layer, there is an inherent stress pattern, resulting in the items having a much lower strength than monolithic casted resins that cured in shape.
However, their print resolution makes them an excellent solution to create a mold which then can be used to create the actual part. Due to the thermal properties, one can't melt SLA prints, making greensand and investment casting not available.
However, the prints are perfectly suited to making high detail silicone molds, into which high durable 2-component casting resins can be cast for curing. In contrast to SLA resins, these cure into a monolithic product, which then is often much more durable to side loads.
I'm an owner of both an FDM printer and a resin one:
I've long searched a resin capable of printing durable objects even in tiny details but with poor luck. I've tried ABS-Like resins, and they provide a slightly better resistance than regular resin but do not expect great improvements; I've tryed the siraya tech Blue V2 that is for sure much more durable but eventually would fail on the smaller details...
In the end i think I'll try the flexible resins like the Liquicreate flexible X or the Siraya tech Tenacious because those (similarly to TPU in FDM) can better absorb energy from impacts and having a smaller young's modulus can help when under load.