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Wrong material used for part of brim (Solved) and unnecessary support expansion (Not yet solved)


johnse

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Posted (edited) · Wrong material used for part of brim (Solved) and unnecessary support expansion (Not yet solved)

EDIT: For this first issue, of brim printing in support material, I discovered the "Brim Replaces Support" option when searching all of the options that have "support" in the name. So the first part of this is solved. The unnecessary support in the upper reaches is still an issue.

 

I've got a part that I wanted to print with support that had only a small footprint on the build plate. I wanted to print it in this orientation so the long cylinder would print where there was other stuff on the same layer so it would cool properly.

 

Because it has such a small footprint of Material 1, I choose to use a brim to give it extra adhesion. I normally print PLA with just a skirt.

 

As you can see here, the outer brim printed with Material 1 (purple) but the brim around the small footprint (purple circle) was printed with Support (White Material 2). Clearly that brim was caused by the circle (base of a hollow tube).

 

733384258_wrongmaterialbrim.thumb.jpg.8613373b634425ba27d37990ffc31b5c.jpgIMG_20190914_110648.thumb.jpg.a4ed348cf58382cd66c7fdc6bd0c5ed9.jpg

 

The other problem is that support "Expansion" reached layers above where any support was needed. Generate support was set to only Touching Buildplate. The first slice is showing how the support should be (used Support Blocker as shown in project file).

 

1917625712_withblocker.jpg.8d0ef0ef4e6fb3c376916e9515776e8f.jpg

 

This shows what it generates without the support blocker.

1010092651_withoutblocker.jpg.3665dfdd5dd6cd93d603ac5cc7ecbfd0.jpg

 

This is all with Cura 4.2.1

UM3_PMGearPlate.3mf

 

Edited by johnse
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