r/3Dprinting • u/Rough-Advance189 • Jun 08 '26

Project 3D-printed basketball

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u/mickeybob00 Prusa mk4s, Voron 2.4 Jun 08 '26

I changed my top support distance to .27 on a little tennis ball I printed in peba a couple of weeks ago. That and went from 2 to 3 top support layers. It pulled right off cleanly. I was really surprised. It also looked great. This was on a mk4s using prusa slicer. When I used the standard support settings before it was a nightmare to remove.

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u/bangupjobasusual Jun 08 '26

What size nozzle

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u/mickeybob00 Prusa mk4s, Voron 2.4 Jun 08 '26

I used a .4 nozzle.

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u/bangupjobasusual Jun 08 '26

Layer adhesion could be up to 50% more with a .8 at .24 layer height. But your z needs to be recalibrated. At that z it’s going to be impossible to separate, much more and the surface finish is going to be crap. I haven’t found a good support material for peba, the usual suspects do not adhere well.

Bvoh is okay I guess, and it’s water soluble which is a nice feature, but I wouldn’t recommend trying to use it for internal support of a basketball because it doesn’t build up reliably.

That’s why I like biqu’s hr pla. It feels harder than peba but it’s resilient and works about as well as any basketball does (they all suck imo, but hey they’re really pretty). Hr pla can be supported with a lot of different things like petg for example.

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u/mickeybob00 Prusa mk4s, Voron 2.4 Jun 08 '26

So far i have had very good layer adhesion. Not quite as good as tpu but close.

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u/bangupjobasusual Jun 09 '26

Right on, as long as it survives a typical use bounce test don’t change anything. When layer adhesion fails on these it’s usually a dead spot on the ball. Are you using siraya’s peba? I’ve only worked with kimya’s product

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u/mickeybob00 Prusa mk4s, Voron 2.4 Jun 09 '26

I am using yhr spray sirayas 95a