MK4 Multicolorprint ABS/ASA combination in heatead Chamber with 658 material changes without issues...
Hi @ All,
after a really long journey of failed prints due to Layershift and stucked Filament in the Extruder while Filament change and a lot of Trial and Error attempts, now I am at the point where I fixed most of my recouring issues.
Espacially if you print in an sctive heated chamber, then the issues really starts. My biggest challange was here that the pulley wheel of the extruder heats up to the chamber temperature and together with idler tension it disforms the filament until the filament stops extruding, which often happens after approx 90mm Z height...
That print was printed with ABS filament anf BVOH Support Interface (forget fake info with HIPS Filament and D-Lemonen doesn´t work!!!)
If corrctly tuned, BVOH sticks perfectly while printing and after printing the most can be removed by break-a-way. (For ABS you need to print BVOH hotter, otherwise the leftover ABS in Nozzle blocks the BVOH after Filament change.) And my experience was, that an overextrudution (Extrution multiplier 1.4) also helps to improve sticking.
The Chamber was heated up to 70°C
Filaments:
fiberlogic ASA olive green
fiberlogic ABS burgundery
nobufil ABS stainless steel
fiberlogic BVOH
Nozzle 0.8mm, 0.3mm Layer height, 1 perimeter with 10% Zig-Zag Infill. The print is totaly robust and solid.
BVOH break away Support Interface:
