So I have been running my first liter of Rigid resin… and I have to say I am extremely impressed with the results thus far.
This print is essentially as big a thing as will fit in the Form2 print volume, and a challenge because of its 1.5mm wall thicknesses, and its long dead flat and dead straight sides.
For dimensional accuracy I printed it at 0.1 layer height.
You can see the shadow ribbing inside… those 1.5mm ribs stick out only 4mm inside the exterior wall.
its hard to tell in the pictures… but the bottom edge is NOT parallel to the build plate- I canted it about 2 degrees just so I would not be printing the entire length of that edge at once- but would build up length over time to reduce the chances of warpage. Printing similar models in durable and tough resulted in wavy walls between the ribbing. None of that evident in this print fresh from the printer.
For all intents and purposes, this is as close to a perfect print as I have seen. the edges are dead straight, flat surfaces dead flat showing only the periodic patterning of the layers that comes from the mathematical moire rounding of this particular incline of 0.1mm steps with the stepover size of the laser.
The real question will be how much it warps from post cure- i’ll post later with those results.
I Like the color better than the white- or the durable. Its solid enough to appear white but has a slight depth that makes for a good analog to injection molded parts in white Polypropylene or nylon.
Rigid also has a good hefty feel to it- heavier than the other resins because of the glass fill.
Cross your fingers that post cure doesn’t warp it all to hell.
one weird thing, tho- I have noticed that unlike the other resins, when I go to wipe down the build plate with ISP after getting the print off- it turns the paper towel BLACK. I rub and rub and rub- and the paper towels keep coming up black- it takes a lot of cleaning of the platform to get the otherwise invisible black stuff off the platform.