I have a modified Anet A8 that is supposed to print hydrogels (paper : Ultra-Low-Cost 3D Bioprinting, Kahl M et al. 2019).
For this to work, we do not need any temperature-related settings, however, I cannot seem to understand how to turn them off. If I try to set the extrusion temp to 25-40 °C, somehow the extrusion servo does not move at all.
Probably I need to enable cold extrusion, but when I tried to add the
M302 P1 or
M302 S0, it does not work. The printer goes in the path determined by the slicer but the syringe does not extrude the gel.
Unfortunately, the paper did not have anything about the exact settings.
Once in the past I managed to run it, however, that was pre-COVID and the G-code files are probably lost due to me having to reinstall my laptop. If I remember correctly the solution then was to just have the hot end hang from the cross-section of the printer(temps were set at 190 °C?), however, I doubt that it is OSHA approved.
Do you have any proper workarounds?
Current G-code :
;TIME:270 ;Filament used: 1.61099m ;Layer height: 0.25 ;MINX:102.269 ;MINY:97.063 ;MINZ:0.3 ;MAXX:122.736 ;MAXY:117.524 ;MAXZ:4.8 ;Generated with Cura_SteamEngine 4.8.0 M140 S30 M105 M190 S30 M104 S25 M105 M109 S25 M82 ;absolute extrusion mode G28 ;Home G1 Z15.0 F2000 ;Move the platform M302 S0 G92 E0 G92 E0 G1 F1500 E-10 ;LAYER_COUNT:19 ;LAYER:0 M107 M204 S1000 G0 F6000 X105.03 Y100.305 Z0.3 ;TYPE:SKIRT G1 F1500 E0 G1 F600 X105.246 Y100.082 E0.697