positioning object above spring steel sheet
 
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Aryser
(@aryser)
Eminent Member
positioning object above spring steel sheet

Is there with Pruse slicer a way to positoning a object some distance above the spring steel sheet?
(my objets go always in touch with the spring steel sheet)

I want to bridge this distance with support.

With suport everywhere I hope for a nicer printed bottom surface, on objects with no flat surfaces.

Posted : 06/05/2021 5:19 pm
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(@)
Illustrious Member
RE: positioning object above spring steel sheet

Look up RAFTS.

As for using supports to create a nicer bottom surface? lol. The only place I have seen rafting help, is a triceratops skull example print. And the texture of the surface is perfect for an old skull - like sand paper. If that's what you are going for, rafts should work for you. 

This post was modified 4 years ago by --
Posted : 06/05/2021 7:07 pm
Aryser
(@aryser)
Eminent Member
Topic starter answered:
RE: positioning object above spring steel sheet

this ist the object!

https://www.prusaprinters.org/prints/66035-reuleaux-tetrahedron-with-constant-diameter

 

Posted : 06/05/2021 7:48 pm
cwbullet
(@cwbullet)
Member
RE: positioning object above spring steel sheet

@tim-2

A raft created a less than desirable surface in my book.  It is often rather rough.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 07/05/2021 2:40 am
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(@)
Illustrious Member
RE: positioning object above spring steel sheet

@cwbullet

What the OP is asking for is exactly what a raft is for. And yes, the results from Prusa Slicer are not what many of us would consider 'acceptable' ... I called it sand paper rough ... but, it performs the requested function of supporting an object off the build plate within Slicer. I've heard Cura does better at rafting.

@aryser
 
Have you found the raft settings yet?
ps: you'll still need to enable supports.
This post was modified 4 years ago 3 times by --
Posted : 07/05/2021 3:06 am
cwbullet
(@cwbullet)
Member
RE: positioning object above spring steel sheet

@tim-2

I am not sure I would call Cura acceptable either.  Maybe it is marginally better.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 07/05/2021 3:10 am
bobstro
(@bobstro)
Illustrious Member
RE: positioning object above spring steel sheet
Posted by: @cwbullet

[...] I am not sure I would call Cura acceptable either.  Maybe it is marginally better.  

Supports are one of the few remaining areas where PrusaSlicer lags behind. IME:

  • Cura's tree supports are much nicer to work with than "platform" supports when doing irregular shapes like miniatures.
  • ideaMaker's platform-style supports are much cleaner when supporting large flat surfaces.

That said, it sounds like Team Prusa is working on supports soon, so I expect PrusaSlicer will move ahead in these areas in the not-too-distant future. I don't see anything about this particular print that would benefit hugely from using another slicer. I'd try rotating the tetrahedron 180 degrees to minimize the amount of support contact required:

I know Angus of the Maker's Muse YouTube channel prints a lot of these shapes. He's probably got some tips on printing for the cleanest result.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 07/05/2021 5:30 am
cwbullet
(@cwbullet)
Member
RE: positioning object above spring steel sheet

@bobstro

I hope you are right.  I just tried idea maker and it is superior.  I will try Cura again.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 07/05/2021 9:56 am
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