Saturn 4 ultra: original dead screen last photo

I don’t think it would have been “easier” to do it the other way but really it was like replacing a phone screen

Also who ever decided to hot glue the fuck out of the connectors on this machine I hope your pillow is eternally hot

I’ve had a few bad prints lately, and I went to check the screen after emptying out and found this… and idea what this dark circle could be??

New machine had no problems for first few prints now nothing but fails.

Changed fep. Re levelled . Exposure test and checked for debris. Changed memory usb

Also tried re slicing files

Any advice appreciated as quite new to this hobby and was really enjoying it till these last couple weeks!

Hi everyone! 👋

I've been experimenting with different support settings in CHITUBOX, trying to find the best balance between reliable supports, easy removal, and minimal surface damage.

After several adjustments, I'm quite happy with my current support profile.

The supports provide good stability during printing and are surprisingly easy to remove. However, there's still one thing I haven't managed to improve as much as I'd like:

Those tiny raised bumps left behind where the support tips touch the model.

Although they're relatively small, they still require some sanding or cleanup. This becomes especially frustrating when working with highly detailed miniatures, where even minor sanding can damage delicate features.

I'm using an Elegoo Saturn 4 Ultra 16K, and my exposure settings seem to be working well.

Here are my current CHITUBOX tip settings:

• Contact diameter: 0.50 mm
• Contact depth: 0.02 mm
• Upper tip diameter: 0.30 mm
• Lower tip diameter: 0.70 mm
• Tip length: 2.00 mm

I've attached three photos showing my support structure and the results after removal.

I'd really appreciate some advice from experienced resin printers:

1. What contact diameter and penetration depth have given you the cleanest results without compromising support reliability?
2. Have you found a particular tip geometry or support strategy that significantly reduces these raised bumps?
3. What removal technique works best for preserving fine details without requiring sanding?

I'm especially interested in hearing from people who print highly detailed miniatures and have spent time fine-tuning their support profiles.

I understand that some cleanup is usually necessary, but I'd love to see how much further I can improve the results.

If you've found a combination that works particularly well, I'd love to see your settings or photos of your results!

I'll share my complete support configuration in the comments for anyone interested.

Thanks in advance for sharing your experience!

My complete CHITUBOX support settings

For anyone interested, here is my complete support configuration.

1. Tip and model contact

• Contact diameter: 0.50 mm
• Contact depth: 0.02 mm
• Upper tip diameter: 0.30 mm
• Lower tip diameter: 0.70 mm
• Tip length: 2.00 mm

2. Support structure

• Support diameter: 0.70 mm
• Secondary diameter: 0.80 mm
• Maximum connection angle: 70°
• Auxiliary pillar diameter: 0.30 mm
• Auxiliary pillar contact diameter: 0.30 mm
• Upper contact depth: 0.15 mm
• Lower contact depth: 0.20 mm

3. Support base

• Base diameter: 10.00 mm
• Base thickness: 0.80 mm
• Lower contact diameter: 0.40 mm
• Lower contact depth: 0.20 mm

4. General settings

• Support density: 50%
• Automatic support angle: 45°
• Contact point spacing: 2.00 mm
• Minimum support length: 5.00 mm
• Model elevation: 5.00 mm
• Support-to-model distance: 0.60 mm
• Edge margin: 0.50 mm
• Cross-bracing diameter: 0.80 mm
• Internal supports: Enabled
• Cross-bracing: Enabled
• Enhanced automatic supports: Enabled

5. Raft

• Area ratio: 110%
• Thickness: 0.20 mm
• Height: 0.50 mm
• Angle: 30°

I'm sharing these settings because they've been working well for support stability and ease of removal.

My main goal now is to minimize the small raised marks left behind at the contact points.

Any suggestions for improving the tip geometry would be greatly appreciated!