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Solved - see the Stack Overload thread here:
And the forked version of Slic3r here:
by
tomMulholland
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Slic3r
I think I found the right section of code to change, but my Perl isn't good (it's non-existent). The code snippet is below, from lib/Slic3r/Print/GCode.pm. I don't want to start with $last_extruder_id, but always order it extruder 1, extruder 2, extruder 3, etc.
# tweak extruder ordering to save toolchanges
my @extruders = sort { $a <=> $b } keys %by_extruder;
if (@extrude
by
tomMulholland
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Slic3r
I would like to change Slic3r's source code to allow me to change the build order of dual-extrusion parts. Currently, the extruders alternate every layer; e.g. layer 3 uses extruder 1, then extruder 2; layer 4 uses extruder 2, then extruder 1.
Long story short, I need to make sure extruder 1 prints first on every layer in order to have finer control over the toolpath generation. I would apprecia
by
tomMulholland
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Slic3r
Well, I have a very ugly Python workaround now. Contact me if you have a similar problem.
by
tomMulholland
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Slic3r
I would like to set up a dual nozzle print where material 1 always prints first on every layer.
As background, I have a thin-walled part with a lot of delicate bridges. I would like to always print the bridges after the walls. A normal slicing will create toolpath issues that damage either the bridges or walls. I discovered that I can split the part into two STLs, then use two extruders (one rea
by
tomMulholland
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Slic3r
Hi Koko,
Thanks for your reply. I agree that the print quality is certainly affected by more things than just the extruder having trouble at high speeds. However, I would suggest that the problem is more real than people realize. For example, a colleague of mine did some extrusion tests with a temperature sweep. He used a FlashForge Creator 2, and sent the plain Gcode command to extrude at a giv
by
tomMulholland
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General
That may be true in some cases, but consider that the newest generations of printers claim to reach speeds of 100, 200, or even 300 mm/s. I agree that print quality generally goes down as the speed is increased, but that precisely indicates that the extruder isn't functioning as desired. That's another reason to consider upgrading the extruder in some way.
by
tomMulholland
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General
That's very interesting to hear that you almost never have problems. I'd say that you don't really want the extruder to skip steps - you will extrude less than the Gcode calls for, which should lead to printing defects (even if they're too small to see). One solution is lower the printing speed (to lower the pressure in the nozzle), but nobody wants that.
by
tomMulholland
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General
Hello to everybody!
I'm interested in developing a single extruder with dual drive gears, and I'm curious about what has already been done. I believe that the twin drive gears should be able to sustain higher pressures in the nozzle, thus allowing faster and more reliable printing (hopefully with less "chewing through" the filament). I think a design like this would be easily adaptable to carria
by
tomMulholland
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General