# Improved Form 4 & 4L Silicone Settings **URL:** \ **Category:** General Discussion\ **Created:** [August 10, 2026, 10:55pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725 "2026-08-10T22:55:53Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![leonhart88](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/leonhart88/32/19153_2.png) [@leonhart88](https://forum.formlabs.com/u/leonhart88)\ **Post date:** [August 10, 2026, 10:55pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725/1 "2026-08-10T22:55:53Z")
After months of testing, lots of resin, and lots of failed parts - I have a pretty consistent print setting for Silicone on the 4L. In fact, the settings that we’ve changed also carry over to the Form 4 and greatly improve success rates across the board. I’ll be making some blog posts and YouTube videos on this in the future, but in the meantime, we are selling the print setting on our store to recoup the time & consumables spent on this. We’ll send both the F4 and F4L print settings with a purchase. Looking forward to seeing what people can create in Silicone with this 💪 > **[Formlabs Upgraded Silicone Print Settings — Ember Prototypes | 3D Printing...](https://www.emberprototypes.com/products-formlabs-silicone-print-setting)** > > Custom and improved Silicone 40A print settings for both the Form 4 and the Form 4L! ![image](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/b/b/bb862ce6c1d4448bd485554843f734e228e12d39.jpeg) ![image](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/1/e/1e7f54718c4a9df2ee7562780f7826fe2e6468b2.jpeg) ---
**Author:** ![DasPrintHaus](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/dasprinthaus/32/22685_2.png) [@DasPrintHaus](https://forum.formlabs.com/u/DasPrintHaus)\ **Post date:** [August 11, 2026, 3:09pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725/2 "2026-08-11T15:09:49Z")
The silicone is awesome stuff. Without giving away your secret sauce, what problems do your settings solve? Those prints look SUPER clean! ---
**Author:** ![leonhart88](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/leonhart88/32/19153_2.png) [@leonhart88](https://forum.formlabs.com/u/leonhart88)\ **Post date:** [August 11, 2026, 4:33pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725/3 "2026-08-11T16:33:58Z")
Silicone is very weak in its green state, which means tearing, ripping off the BP, supports failing, etc. Our print settings fix that and allow you to print parts that would otherwise fail completely even on the F4 stock settings. I’ve printed some really tall parts that were surprisingly successful and also parts from other people/companies that failed outright. This is an example that fails with stock settings but resolves with ours (this is one of the sample parts in the previous pictures) ![image](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/0/9/0935cc5342c08b5bfb7ee853e7a10e92cea3198f.jpeg) ---
**Author:** ![DasPrintHaus](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/dasprinthaus/32/22685_2.png) [@DasPrintHaus](https://forum.formlabs.com/u/DasPrintHaus)\ **Post date:** [August 11, 2026, 5:00pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725/4 "2026-08-11T17:00:57Z")
Very cool! We’re doing something similiar - the biggest thing I’ve noticed is overexposure on support tips, even when modeling in the supports in CAD. It’s pretty awesome material. The folks out the airbase here LOVE it. This one is fresh out of the curing bath. ![image](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/7/a/7a24481c5d7c0f42d865d0654436a67a809b9763.jpeg) ---
**Author:** ![leonhart88](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/leonhart88/32/19153_2.png) [@leonhart88](https://forum.formlabs.com/u/leonhart88)\ **Post date:** [August 11, 2026, 6:04pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725/5 "2026-08-11T18:04:08Z")
That looks awesome! Auto generated supports in Preform are actually really bad for Silicone. They aren’t optimized for the viscosity, so parts with a lot of supports actually end up creating more cupping than without, which is why you always get better results printing flat on BP with zero supports. Definitely a cool material. I wish washing it was easier though haha… ---
**Author:** ![DasPrintHaus](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/dasprinthaus/32/22685_2.png) [@DasPrintHaus](https://forum.formlabs.com/u/DasPrintHaus)\ **Post date:** [August 11, 2026, 6:25pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725/6 "2026-08-11T18:25:13Z")
Indeed! Designing for 3D printing is certainly something to consider, then add the properties of this silicone on top of that! ---
**Author:** ![leonhart88](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/leonhart88/32/19153_2.png) [@leonhart88](https://forum.formlabs.com/u/leonhart88)\ **Post date:** [August 11, 2026, 6:36pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725/7 "2026-08-11T18:36:40Z")
Yup! Are you just running silicone on the Form 4? ---
**Author:** ![DasPrintHaus](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/dasprinthaus/32/22685_2.png) [@DasPrintHaus](https://forum.formlabs.com/u/DasPrintHaus)\ **Post date:** [August 11, 2026, 7:31pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725/8 "2026-08-11T19:31:34Z")
We do a lot of stuff on the form4. That seal is for an airplane toilet, so we’ll see how it holds up. I got a lot of production with the tough series as well. It’s my absolute favorite SLA printer at the moment. I really want to play around with the Alumina, but I can’t find anyone who can fire it 😆 ---
**Author:** ![leonhart88](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/leonhart88/32/19153_2.png) [@leonhart88](https://forum.formlabs.com/u/leonhart88)\ **Post date:** [August 11, 2026, 9:20pm UTC](https://forum.formlabs.com/t/improved-form-4-4l-silicone-settings/46725/9 "2026-08-11T21:20:23Z")
Maybe one day you can upgrade to a 4L! They’ve been great for me 😬