slic3r & S3D - Replicate print settings from one to the other?
 
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andy.g2
(@andy-g2)
New Member
slic3r & S3D - Replicate print settings from one to the other?

Hello!

I'm pretty new to 3D printing and recently picked up a MK3. My prints have been going really well so far, but some hiccups have recently occurred and, as of right now, I'm thinking it may be due to the slicing software.

For example, slic3r has a good deal more support around certain areas of the model I'm trying to print:

However in S3D, I've noticed much less support in the same areas:

I've set the infill to be more dense in S3D than in slic3r (rectilinear vs grid) but overall, I've found the print quality for me is much better when using slic3r than S3D. On the flip side though, the support structures in S3D are so much better that I'm trying to figure out how to replicate the way slic3r creates the gcode in S3D. Like I said though, I'm pretty new to all of this so I'm not exactly sure where to start...

The hiccups I've run in to can be seen below. These are the last 2 prints I did using S3D are below, whereas the prints I did through slic3r were very smooth (minus the bad supports that more or less made the print a wash). The S3D prints were sent to the printer through Octoprint (copied locally) if it matters. I just started another print but copying the file straight to the SD card and omitting octoprint entirely.

Any help/suggestions on how to get the layer output from S3D to be more like what I'm seeing in slic3r, or are the pictures from my last 2 S3D prints indicate that I need to look/tweak elsewhere?

Opublikowany : 16/08/2018 4:21 pm
bobstro
(@bobstro)
Illustrious Member
Re: slic3r & S3D - Replicate print settings from one to the other?

Is the 2nd-to-last pic with Simplify 3D and the last Slic3r? It would help to match the preview to the result.

The 2nd to last shows pillowing, which can indicate insufficient underlying support density, too high temps (causing filament to distort) or insufficient top layers. Notice that you're getting this problem over all areas, not just the infill areas.

I stopped using Simplify 3D a while ago, but you might try turning on Support->Dense support->Dense Support Layers to 2. Unfortunately, I don't think that will work with infill, which seems to be the problem in that pic.

You could try turning up infill density or increasing top layers to see if it helps. If you are using the Prusa presets, they have very aggressive speeds for infill. You might try slowing that down.

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

Opublikowany : 16/08/2018 7:59 pm
andy.g2
(@andy-g2)
New Member
Topic starter answered:
Re: slic3r & S3D - Replicate print settings from one to the other?


Is the 2nd-to-last pic with Simplify 3D and the last Slic3r? It would help to match the preview to the result.

The 2nd to last shows pillowing, which can indicate insufficient underlying support density, too high temps (causing filament to distort) or insufficient top layers. Notice that you're getting this problem over all areas, not just the infill areas.

I stopped using Simplify 3D a while ago, but you might try turning on Support->Dense support->Dense Support Layers to 2. Unfortunately, I don't think that will work with infill, which seems to be the problem in that pic.

You could try turning up infill density or increasing top layers to see if it helps. If you are using the Prusa presets, they have very aggressive speeds for infill. You might try slowing that down.

Sorry, both of the pics of actual prints were through SImplify3D. All of the prints I've done through silc3r haven't given me a problem (minus substandard supports).

I've tried lowering the temperature and, while there's still some pillowing, it helped quite a bit. I think I may have messed things up a bit earlier by adding the S3D MK3 settings from this thread and not looking more in to them. Really good to know about the infill speeds of those settings though. I'll try and mess with those next.

Thanks a bunch for your help!

Opublikowany : 16/08/2018 11:09 pm
bobstro
(@bobstro)
Illustrious Member
Re: slic3r & S3D - Replicate print settings from one to the other?


[...] Really good to know about the infill speeds of those settings though. I'll try and mess with those next.
The reason I switched to Slic3rPE from Simplify 3D was the ability to throttle speeds using volumetric speed settings. The E3D V6 extruder has a limit to how much filament it can process. The amount of filament shoved through the extruder is a factor of linear speed, extrusion width, layer height, acceleration, jerk and no doubt other settings. Unfortunately, S3D only has really annoying speed settings to play with. Slic3r has max volumetric speed settings for both print and filament settings. I've found the only way to successfully print some materials, notably flex and filled materials, was to throttle those settings to 8, 6 or even 1.

I put together a spreadsheet to provide data on using different nozzle sizes, layer heights, volumetric speed rates and the impacts on speeds. Using a stock 0.40mm nozzle and 0.20mm layer heights, it shows that I can only print up to 120mm/s before I start to over-run the E3D V6 extruder's 11.5mm^3/s optimistic rating. If I go with a 10mm^3/s rating which is more realistic from what I've read, that drops to just over 100mm/s. If I print at 0.15mm layer height, those go to roughly 160 and 138mm/s. At 8mm^3/s for PETG, I'm pushing my luck at 85mm/s at 0.20mm layer height. If I drop in a 0.60mm nozzle and chunky 0.48mm layer heights, my speeds drop to below 80mm/s.

This information may not help with your specific issues, but it's one more data point on the differences between Slic3rPE & S3D to keep in mind. I often had problems printing infill with S3D until I realized what was going on with the speeds. Whenever I need to go back to S3D -- and I do love S3D's supports -- I use these results to set the maximum print speeds, and scale speeds for specific features accordingly. I too am in the process of figuring out how to reverse-engineer good Slic3rPE results into S3D. Sadly, it involves avoiding S3D until the final steps. It's a shame the $150 product is the one with the limitations!

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

Opublikowany : 16/08/2018 11:44 pm
andy.g2
(@andy-g2)
New Member
Topic starter answered:
Re: slic3r & S3D - Replicate print settings from one to the other?


The reason I switched to Slic3rPE from Simplify 3D was the ability to throttle speeds using volumetric speed settings. The E3D V6 extruder has a limit to how much filament it can process. The amount of filament shoved through the extruder is a factor of linear speed, extrusion width, layer height, acceleration, jerk and no doubt other settings. Unfortunately, S3D only has really annoying speed settings to play with. Slic3r has max volumetric speed settings for both print and filament settings. I've found the only way to successfully print some materials, notably flex and filled materials, was to throttle those settings to 8, 6 or even 1.

I put together a spreadsheet to provide data on using different nozzle sizes, layer heights, volumetric speed rates and the impacts on speeds. Using a stock 0.40mm nozzle and 0.20mm layer heights, it shows that I can only print up to 120mm/s before I start to over-run the E3D V6 extruder's 11.5mm^3/s optimistic rating. If I go with a 10mm^3/s rating which is more realistic from what I've read, that drops to just over 100mm/s. If I print at 0.15mm layer height, those go to roughly 160 and 138mm/s. At 8mm^3/s for PETG, I'm pushing my luck at 85mm/s at 0.20mm layer height. If I drop in a 0.60mm nozzle and chunky 0.48mm layer heights, my speeds drop to below 80mm/s.

This information may not help with your specific issues, but it's one more data point on the differences between Slic3rPE & S3D to keep in mind. I often had problems printing infill with S3D until I realized what was going on with the speeds. Whenever I need to go back to S3D -- and I do love S3D's supports -- I use these results to set the maximum print speeds, and scale speeds for specific features accordingly. I too am in the process of figuring out how to reverse-engineer good Slic3rPE results into S3D. Sadly, it involves avoiding S3D until the final steps. It's a shame the $150 product is the one with the limitations!

Interesting! I'll definitely have to keep that in mind, especially since I found I was having issues trying to print a phone case with flex PLA (I kept getting an error to unload and reload the extruder). I didn't want to end up messing anything up with the extruder/hardware since I'm using this printer to print out prototype stuff for a business I'm trying to get off the ground, so I put the flex filament to the side for another day.

For now, I've dropped the infill speeds from 100% to 60% to experiment with and we'll see how it gets along.

Thanks a ton!

Opublikowany : 16/08/2018 11:53 pm
bobstro
(@bobstro)
Illustrious Member
Re: slic3r & S3D - Replicate print settings from one to the other?

For flex, you want it to go slow. 25% might be a good start. Shiny or translucent filament can trip the sensor. Just disable the filament sensor if it's an issue. The next firmware update has fixes that should help.

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

Opublikowany : 17/08/2018 3:44 am
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