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zargnut
(@zargnut)
Active Member
Support issues with large print

Hi have had multiple failures recently on my [TypeOriginal Prusa MK4S Firmware6.4.0+11974] printer..

Printing a large item with overhangs. I added full supports and it turned into a big mess. I tried printing this on it's side first, and the PETG just started bowing and deforming at the ends, preventing the print from continuing.

Using Prusament PETG Galaxy Black

I used PRUSA slicer (File attached) with auto settings to create supports. The supports look like confined spaghetti and eventually killed the print. 

The print looked ok until it failed. 

Best Answer by jan.d.slay:

Try organic supports.

Posted : 03/02/2026 2:20 pm
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: Support issues with large print

Try organic supports.

Prusa Core One - Comfortable height display
Prusa Core One - Fast & Clean Start Gcode
Prusa XL - Quick Start Gcode
Posted : 03/02/2026 2:53 pm
zargnut
(@zargnut)
Active Member
Topic starter answered:
RE: Support issues with large print

Thanks.. this worked much better.. The supports still separated from the overhang edge, but at least they didn't obstruct the print. They were more successful inside the hollow of the print as well.  This was for a 12x18" activated charcoal filter to attach to a resin printer enclosure 4" duct vent.. unable to vent outside. 

 

 

Posted : 04/02/2026 2:26 pm
1 people liked
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: Support issues with large print

Very good, I'm really glad it went well.

For something like this, you would need a 5-axis printer that keeps the nozzle level but tilts the print bed away at an angle.

Prusa Core One - Comfortable height display
Prusa Core One - Fast & Clean Start Gcode
Prusa XL - Quick Start Gcode
Posted : 04/02/2026 2:42 pm
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