Slic3r PE extruder G-code compared to Simplify3D ??
Hi guys, I don't think I have a bug but might have a code compatibility problem. I'm really not sure though.
I am having good success with Slic3r-PE on an old Prusa i3 Mk1 at home, but am having an issue with gross under extrusion with using it with another design machine.
I setup a new profile for the second machine using the physical parameters same as used in Simplify3D, which I would think should be a good starting point.
The issue is, if sliced with S3D software I get good extrusion flow rate and reasonable print on this Intamsys machine, but slicing the same object with Slic3r-PE I find I get way way too little extrusion (like maybe only 10% of normal) and have to abort the print before it just creates a mess.
I've checked the filament diameter settings and both apps are set to 1.75mm (which is what the machine uses). Flow control in Slic3r-PE is at 100% in the expected places (as was in S3D app too), extrusion multiplier at 1.
I have here a code snip for both slicers with a test object of a plain 60x60x30 hollow box. One from PE then the one from S3D.
I notice that the E step code has an extra decimal place compared to generated by S3D (and the magnitude looks too high too in this test object slice), could this be a problem for this printer firmware ?
Does Slic3r-PE do something special with extruder code that I need to tweak or change for this printer maybe ?
Code snip at about Z= 3.2mm off the base with Slic3r-PE.
G1 Z3.000 F7800.000
G1 X159.800 Y159.800
G1 F1800
G1 X100.200 Y159.800 E234.49919
G1 X100.200 Y100.200 E236.26879
G1 X159.800 Y100.200 E238.03839
G1 X159.800 Y159.740 E239.80621
G1 X159.414 Y159.696 F7800.000
G1 X159.443 Y159.443
G1 F3600
G1 X100.557 Y159.443 E241.55461
G1 X100.557 Y100.557 E243.30300
G1 X159.443 Y100.557 E245.05140
G1 X159.443 Y159.383 E246.79801
G1 X159.086 Y159.086 F7800.000
G1 F3600
G1 X100.914 Y159.086 E248.52521
G1 X100.914 Y100.914 E250.25240
G1 X159.086 Y100.914 E251.97959
G1 X159.086 Y159.026 E253.70500
G1 Z3.200 F7800.000
G1 X159.800 Y159.800
G1 F1800
G1 X100.200 Y159.800 E255.47460
G1 X100.200 Y100.200 E257.24421
G1 X159.800 Y100.200 E259.01381
G1 X159.800 Y159.740 E260.78163
G1 X159.414 Y159.696 F7800.000
G1 X159.443 Y159.443
and from S3D with extruder code with 4 decimal places.
; layer 15, Z = 3.000
; outer perimeter
G1 X100.240 Y100.240 F4800
G1 Z3.000 F1002
G92 E0
G1 X159.760 Y100.240 E2.3756 F1577
G1 X159.760 Y159.760 E4.7511
G1 X100.240 Y159.760 E7.1267
G1 X100.240 Y100.240 E9.5023
; inner perimeter
G1 X100.720 Y100.720 F4800
G92 E0
G1 X159.280 Y100.720 E2.3373 F2365
G1 X159.280 Y159.280 E4.6745
G1 X100.720 Y159.280 E7.0118
G1 X100.720 Y100.720 E9.3490
; layer 16, Z = 3.200
; outer perimeter
G1 X100.240 Y100.240 F4800
G1 Z3.200 F1002
G92 E0
G1 X159.760 Y100.240 E2.3756 F1577
G1 X159.760 Y159.760 E4.7511
G1 X100.240 Y159.760 E7.1267
G1 X100.240 Y100.240 E9.5023
Re: Slic3r PE extruder G-code compared to Simplify3D ??
I've got zero experience with Intamsys machines, and damned little with Prusa, but one thought is that some of the custom gcode inserted by Prusa might cause problems on the other machine. Have you tweaked the printer settings in Slic3rPE to match the Intamsys beast? At the price I suspect they charged for those printers, I wouldn't be bashful about calling their tech support for help.
Re: Slic3r PE extruder G-code compared to Simplify3D ??
Hi.
Yep I tweaked the PE settings to mimic what I was using in S3D software with reasonable success, so I expected the results to be similar until I tweaked PE settings to improve on those that S3D sucks at.
I've not had much time to try further since then, but I think I might load up Slic3r 1.2.9 and see if that behaves like I expected as a benchmark.
Re: Slic3r PE extruder G-code compared to Simplify3D ??
Are you using Slic3rPE? If you care to link to the STL, I can slice in in Slic3rPE 1.41.0-beta and upload the gcode for you to compare.
[...] I've not had much time to try further since then, but I think I might load up Slic3r 1.2.9 and see if that behaves like I expected as a benchmark.
Re: Slic3r PE extruder G-code compared to Simplify3D ??
Hi Martin,
have you tried the different flavours of Gcode?
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: Slic3r PE extruder G-code compared to Simplify3D ??
Hi Martin,
have you tried the different flavours of Gcode?
Gcode Flavour.JPG
regards Joan
Hi,
No, only the Marlin option as that is what the console terminal reports the firmware as (Marlin firmware) when first connected.
Should I have tried others regardless ?
In the meantime, I loaded up original fork of Slic3r with the development version 1.3.0-Dev and tried a slice and print using the same machine parameters. The result is good, extrusion flow is fine. Machine behaves normally with that G-code.
Not sure what that means but I'll keep using 1.3.0-Dev a bit more and see how it goes.
Re: Slic3r PE extruder G-code compared to Simplify3D ??
I have no idea what the intamysis uses... is it Marlin?
Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: Slic3r PE extruder G-code compared to Simplify3D ??
but am having an issue with gross under extrusion with using it with another design machine.
If you look at the G-code, you are extruding around 250 linear mm of filament for every 50 mm moved in X or Y.
If you printer uses 1.75mm filament, then that is 12 mm^3 filament per linear mm of X/Y. So you either have a huge layer height or width in the settings, or there is something significantly wrong somewhere.
Seems to me if you tries to print this, the printer would probably just give up and go home!
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…