Simple(hopefully) PursaSlicer feature request
Loving Pursa 2.3. Short version of this request : I believe a separate 'First Layer Extrusion Multiplier' would be a HUGE help for PETG printing.
I'm predominately printing PETG on a FLSUN Q5, and I'm finding that with some filaments I need the extruder temp up considerably higher for layer #1 than the remainder in order to achieve good adherence. Can't take the bed temp tooooooo much higher for layer #1 than the remainder due to bed-warping. With a 10-15C delta between layer #1 and the remainder, oozing is considerably greater on layer #1 than the rest..
PETG life isn't unbearable in absence of this feature, mind you. Since the oozing is mostly an issue on prints with a lot of solid fill to get down on layer #1, those generally put down enough material to where sub-optimal adherence does the trick so I just turn layer #1 temp down accordingly 🙂 However I have to remember to do it, and I'm old, and I'm not sure that the method is going to work %100 of the time..
RE: Simple(hopefully) PursaSlicer feature request
Okay, technically it's not a "multiplier" but you can set the first layer extrusion width under Print Settings/Advanced, and then save a custom profile. I don't think there's an override in Filament Settings, though.
In general, this is a user to user support forum, so feature requests are better posted to the PrusaSlicer github site, if you actually want to get them in front of the guys working on the slicer.
RE: Simple(hopefully) PursaSlicer feature request
I do this by creating multiple extruder profiles for the same filament, then add multiple extruders, (however many you like ) and use the height range slide bar to select the layer you want and right click the little + and click change extruder. you will not be prompted to change the filament, nor will the print pause, instead the machine will carry on printing with the new settings applied to that extruder profile.
Ta-Da
I've been using this method for quit a while now, you will have a purge block but it will just print, and will only be as high as your last extruder change.
Enjoy,
Swiss_Cheese
The Filament Whisperer
RE: Simple(hopefully) PursaSlicer feature request
@swiss_cheese
A clever and seemingly perfectly viable work-around, will give it a go! Ty.
RE: Simple(hopefully) PursaSlicer feature request
[...] I believe a separate 'First Layer Extrusion Multiplier' would be a HUGE help for PETG printing.
You can do this in on layer change gcode with something like:
{if layer_num == 1}M221 S105 {else}M221 S100{end}
You might need to insert M221 S105 at the end of your start gcode since that line only gets inserted in a layer change. I don't think it is used on the 1st layer.
A little clunky but it will work for doing what you're after.
Info on M221 here. Notes on conditional PrusaSlicer gcode here.
Edit: put M221 S105 at end of filament gcode to only use with one type of material.