We have started testing Tough 1500 and 2000. These are excellent resins, contrary to Tough, that was completely useless for industrial purposes ( reasons mentionned above by JoatrashFX and well known for several years ).
These resins are more to our eyes a declination of Durable than Tough.
Our preference goes to Tough 2000, which has a much higher Tg under load and can be used in real life environement. Tg of Durable and Tough 1500 make them more suitable for lab/ demo/ proto products at room temperature.
So far, we have not seen warping of the new resins with time ( only a few week though ) and this is promising.
Washing is pretty straightforward with our ultra sonic cleaners. 3 rinses of 3 min in IPA are enough, dirty/ medium/ clean baths. Ultra sonic density required is on hight though.
Drying in cold air is absolutely required, like Durable. The resins change slighlty their aspect once all IPA has evaporated from material surface layer. This is the indication that the part is ready to post cure.
Post-curing is fast and makes the part matt finish. Tackiness disappears during post curing.
Our custom post-curing chamber have 2 times the UV density of Formcure ( 80 W LED strips/ 20 W radiant ).
We post cure 20 min @ 70c for Tough 1500 and 30 min @ 80c for Tough 2000.
Note that we use Form 2 printers exclusively, mostly at 100 microns.
Well done Formlabs. We are glad you listened to our suggestions a couple of years ago, sent out a survey to your industrial customers and came up with the corresponding product. This is the way to go!