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AbeFM

Please Slice and Post!

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Posted · Please Slice and Post!

Can someone take this model, load it into ANY dual-material printer profile and slice it, with the z- distance set to 0, and z overides x-y?

 

I've had support failures for months (since 3.5.1) and I want to see if others get the same issue.

 

Gluetest.stl

 

Please post a picture of the support floors where they meet the model.

 

 

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Posted · Please Slice and Post!

image.thumb.png.1dde01ee5d2e25be91846a6258fe98aa.png

I dunno - one day I thought it was working right, but I can't seem to reproduce it. I haven't responded because I can't figure out what triggers it beyond actually needing to print something.

 

Smithy, yours looks right - perhaps try exagurated numbers - min x-y is reasonable, but make general "Support x/y distance" something big like 2 mm so it's obvious. Yours looks right, perhaps you're on a Mac so it works? 🙂

 

Obewan, it seems you're having the same issues I am - try setting min x-y even lower, but I think it is obvious you're having the same issue.

 

At least I'm not the only one seeing it. I've spent a year screwing with Prusas because they can put support on an existing, sloped wall.... But I would like to think Cura could somehow do this. I've seen far too many people succeed but for the life of me I cannot see how when support prints in mid air.

 

If there's anything I can do to help I am entirely willing.

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Posted · Please Slice and Post!
On 6/28/2019 at 11:16 PM, AbeFM said:

Yours looks right, perhaps you're on a Mac so it works?

Yes I am, could be the reason.

 

Have you already tried to play (increase) with the support horizontal expansion?

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Posted (edited) · Please Slice and Post!

That horizontally expands. It's not really the same thing.

 

image.thumb.png.0dae7c8d5fc99f350848274234758f9e.png

 

You can see massively expanded support, with the same gap. Basically, you can expand support until it forms a complete structure around your object.... But that's not really printing... ON anything, and it won't work if you have complex geometries.

 

There's a SETTING for Z-distance, you would assume someone thought there was utility in being able to choose the distance between support and object, and setting it to 0 for PVA.

If you would, could you do it again with settings like mine?

image.thumb.png.fad0fde33f0f49fa256a2390a02639d7.png

 

If it DOES work on Mac and not on PC... Well, that seems like the sort of thing that could improve the odds of it getting fixed.

Edited by AbeFM

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Posted (edited) · Please Slice and Post!

It just seems to use the greater of the two numbers. Which makes sense.

 

Basically, I feel the support is using the greater of  ("minimum x/y distance", "x/y distance") at all times. Instead, it should use X/Y except in Support Floors and Support Ceilings.

Edited by AbeFM

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Posted · Please Slice and Post!

In case someone needs a model to play with...

image.thumb.png.7f3e21ab8635d024ed81f0232fa351aa.png

 

See attached file for object/settings. You can probably steal my Flintstones song from my printer's end g-code. Or play with XY and Minimum XY and see if you can figure out why I lose the bottom supports.

SupportIssue.3mf

 

Explaining the issue more clearly:
image.thumb.png.5da40ea6507dc7f9930e5a5ec4a2a307.png

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