Background: I was printing a lot on a friends Form2, basically detailed miniatures at 25um, great result, so I was referred to get a Form3, when I saw some issues on the forum I asked to hold my order, but it got shipped anyway, and I was encouraged to “try” and “they will figure out as we go”
My conclusion so far,
Form3 Grey V4 had issues printing 50 and 25, they also admitted that they are still improving settings at these two levels. The same print file worked perfect in Form2.
If you need to print really detailed items, and have small tolerance on bad surface, I would advise hold your order. This conclusion was drawn from my three rounds of tests, see attachment.
Test group 1. https://drive.google.com/open?id=1nmOGL3H52O2knLtLtJLAwkO4xrUXqZh9
Several prints done at 25um using different support size(0.6/0.3), some rotate 90 degrees on build plate, add more support/less support, all prints show ripple-like bumps at first 100 layers at the backside. (Some may suggest sanding, but the bump areas are too much I could not apply sanding as I need those skin textures)
Test group 2. https://drive.google.com/open?id=1pImtT_bDzCOrbxJhJCD_i3ujFbPNCM0p
With the unsatisfied result on F3, I used the same file to print on Form2(Dentalmodev2/Greyv4), print came out no surprises, as good as I had dozens of prints before.
Test group 3.https://drive.google.com/open?id=1avOMybzKbczvvjCw0c5zJ2_PwMtslstz
Reaching out to the support, they suggest try print on 100um, I also tried on 50um, 100um came out good, but unfortunately resolution could not meet my prototype requirement, at 50um the ripple start to show, but less obivious than 25um.
I’ve spent almost 2 weeks time, probably 1/3 of grey resin just to prove my initial concern was true. Form3 was released way too early before all things have been figured out.
If this is the business mode they decided to do, Formlabs should at least provide free resin and tank for testers like me and many others on forum.
Some may have good results on Form3, lucky ones, but right now my brand new Form3 does not meet my requirements, I’m still switching back to print on Form2.