4 ms·

This is factually incorrect. A quick search will show you plenty of flexible resins. Here's one: https://www.youtube.com/watch?v=eely3rxr2to https://www.youtube

This is factually incorrect. A quick search will show you plenty of flexible resins. Here's one: https://www.youtube.com/watch?v=eely3rxr2to https://www.youtube.com/watch?v=eely3rxr2to Resin is also much less prone to size changes than standard FDM filaments. If you've printed FDM you should know how much tolerance you have to have in your parts (ex. hole diameters) to account for shrinkage post-print, not to mention the difficulty of printing things like ABS. Resin has MANY drawbacks and in my opinion kind of sucks as a general user experience, but warping, material quality, and material options are not worse than FDM.

michaelt 2y ago
> A quick search will show you plenty of flexible resins. Here's one: https://www.youtube.com/watch?v=eely3rxr2to https://www.youtube.com/watch?v=eely3rxr2to OK, you make a fair point. People will sell you such resin. But look at the video at the 4m40s mark - the dimensional accuracy is trash. The makers of these printers will all claim they have 0.01mm layers and 0.03 mm x/y resolutions and stuff like that but the dimensional accuracy of the parts coming off them is far, far, far below that no matter what the marketers claim. That cube barely has 1mm dimensional accuracy.
- mdorazio 2y ago
  I agree on quality varying widely for resins softer than something like ABS or PETG. And tolerances are definitely never to advertised spec. It’s worth noting that Formlabs themselves sell a “silicone” resin for a hilarious $350: https://formlabs.com/store/materials/silicone-40a-resin/ https://formlabs.com/store/materials/silicone-40a-resin/ At that price point you might as well outsource it or at least print a negative and use a real silicone pour.
- numpad0 2y ago
  It really is just open loop resolutions. You can print really sharp tweezers in SLA, that's what they mean by that.

michaelt 2y ago

> A quick search will show you plenty of flexible resins. Here's one: https://www.youtube.com/watch?v=eely3rxr2to https://www.youtube.com/watch?v=eely3rxr2to OK, you make a fair point. People will sell you such resin. But look at the video at the 4m40s mark - the dimensional accuracy is trash. The makers of these printers will all claim they have 0.01mm layers and 0.03 mm x/y resolutions and stuff like that but the dimensional accuracy of the parts coming off them is far, far, far below that no matter what the marketers claim. That cube barely has 1mm dimensional accuracy.

mdorazio 2y ago
I agree on quality varying widely for resins softer than something like ABS or PETG. And tolerances are definitely never to advertised spec. It’s worth noting that Formlabs themselves sell a “silicone” resin for a hilarious $350: https://formlabs.com/store/materials/silicone-40a-resin/ https://formlabs.com/store/materials/silicone-40a-resin/ At that price point you might as well outsource it or at least print a negative and use a real silicone pour.
numpad0 2y ago
It really is just open loop resolutions. You can print really sharp tweezers in SLA, that's what they mean by that.