support not triggered at small overhangs

[MLWorx]

Really? It's a pretty tricky part. What do they generate? Those little threads, with the flat bottoms of the thread, aren't easy to support...

See picture and gCode attached!

nozzle 0: PLA
nozzle 1: PVA
...and I know that support inflation of about 1.4mm is pretty much

[laird]

Got it. I was assuming same-material supports, which would be trick. With dissolvable supports, it's a much easier problem.

I'd think that S3D could basically fill in the threads "solid" with PVA, if you generate support with the other extruder and set 0 horizontal offset from part, and 0 separation layers, and a small support pillar resolution, like 1mm I'd expect S3D to fill in between the threads to hold them up. No?

I guess since you've already printed the part it's academic, but I'm curious about how to support something with this kind of detail in S3D.

[MLWorx]

I guess since you've already printed the part it's academic, but I'm curious about how to support something with this kind of detail in S3D.

I had to print those parts for a customer and as Simplify 3D cannot do this I used the free Kisslicer (also the free Slic3r can do this).
If it will not be solved I'll ask for a refund of my 140 Dollar...

Attached a picture where some rests of the PVA are still visible - in real the surface looks much better than here on the picture...

[jimc]

forgetting the slicer here for a min but would those not print way better if the were flipped 180deg. You would need no support at all.

[MLWorx]

forgetting the slicer here for a min but would those not print way better if the were flipped 180deg. You would need no support at all.

Look at the very first post: this pins are just a small section of a "huge" part I cannot rotate.
It's like a knights castle with fine, ribbed merlons - you won't flip the whole castle just to construct the merlons correct

My opinion is that the slicer has to do it's job no matter how I "threw" in the parts on the printbed: and we're talking about a very simple overhang of about 1mm (or slightly lower) - it has to be sliceable without any problems!

[jimc]

oh yes sorry. i was just going off the print you just posted.

[JFettig]

flip it over, design up a raft type feature that will sit 1/2 layer off of the bottom(currently top) layers, let it build support up to it and build the raft, then the part on top of the raft. I am doing stuff like this with large overhangs since the stock support doesn't do a very good job.

Also, if you have PVA, have you tried setting your horizontal offset on the support feature to 0? maybe it'll get in there?

If not, add a cylinder around it that on the ID it has the exact same profile as the OD of the part, print that in PVA and dissolve it.

[ghagen]

ML worx,

See picture for, in my opinion, a good support.

Also added a factory file.
Hope you can use it.

Geo Hagen

[MLWorx]

See picture for, in my opinion, a good support.

Thanks, but I only see a round printbed and my stl file without any support structure

In the meantime I had to do this parts by using Kisslicer as it was not possible in Simplify. I'll have to print several parts for this customer again and this parts will look similar.

As I've already mentioned: a good slicer can handle EVERY part no matter how I place it on the printbed.
It was done for a customer and therefore it has to have a perfect surface finish which you can't archieve by not supporting those tiny round overhangs.

[ghagen]

MLworx,

Sorry for the factory file being not complete.
I am using simplify for the first week now.
Normally I also use Kisslicer, a very good slicer.
But I was looking for a more complete program with also machine control.

I think you always need to have more slicers available for special cases.

Geo Hagen