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Topic: Support material issues in Slic3r

I have been having a hell of a time getting slicer to generate proper supports without making a huge mess of my models. it likes to spit out blobs of plastic at random spots that don't stick to the bed and peel up causing the nozzle to bump them and drag strings all over the place, and in the end, provide no support to what needs supporting. lol

the models are fine, it just seems to be the support material that's the sticky point here. any suggested settings i should try? maybe lower the speed for support printing and increase the width? don't want support to be un removable though, and lowering the speed will make an already 3 hour print take twice as long sad.

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Re: Support material issues in Slic3r

Have you tried lowering the speed of just the first layers so the first support layer gets a good hold of the bed? this shouldn'r impact over time of print too much.

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Re: Support material issues in Slic3r

The best way to get support from Slic3r is to use KISSlicer instead.  It generates great support.  Slic3r never made anything for me that wasn't wobbly.

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Re: Support material issues in Slic3r

I had the same issues you had and kept trying to work through it.  My biggest issue was calibration.  The machine needs to be well calibrated.  Second all my support material is made at .42mm instead of the default.  This was the single biggest improvement.  I also slow down the support material speed depending on what I'm printing.  The lower the print height the slower the speed.  I'd say a good starting point is between the default speed and what your perimeter speed is set to.  Finally, download the latest version of Slic3r.  There are huge improvements to the support material creation in the latest build.

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Re: Support material issues in Slic3r

IanJohnson wrote:

The best way to get support from Slic3r is to use KISSlicer instead.  It generates great support.  Slic3r never made anything for me that wasn't wobbly.

The biggest problem with Kisslicer is that the latest versions do not always produce useable output.  Kisslicer is not very forgiving of so called "bad models", models containing errors. 

I like to print models that were originally intended for animation (3D Studio Max, Poser, etc).  Those models contain a lot of intersecting faces, holes, and solid bodies inside other solid bodies, so it's almost impossible to generate a "clean" model regardless how what you filter it through.  Early versions of Kisslicer were fine and could produce useable Gcode, but the latest versions (1.1.0 beta and newer) either crash on the model, or generate broken slices (missing parts, missing layers, weird artifacts, etc).

On the other hand, Slic3r 9.9.0 and newer are much better at dealing with "defective" models.  It just doesn't produce very good support.  In fact I was thinking about starting a new thread on the best settings for generating support.

I usually cut the models in such way as to be able to print them without support, but every once in a while I wish I could put support in just 2 or 3 spots, but nooo, Slic3r wants to wrap the whole thing is construction scaffolding instead.

To print or, 3D print, that is the question...
SD3 printer w/too many mods,  Printrbot Simple Maker Ed.,  FormLabs Form 1+
AnyCubic Photon, Shining 3D EinScan-S & Atlas 3D scanners...
...and too much time on my hands.

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Re: Support material issues in Slic3r

My live feed is up now and the part running has a ton of support.  You can see the support in this feed right now.  It's done with the latest version of Slic3r. http://solidoodle.camstreams.com/  I also do some from 3DS Max.  Pirvan is right that the models tend to work better with Slic3r.