Changes to RC3 version for faster printing.
Hi Josef Prusa, I have noticed a few things that can be tweaked on your RC3 Shield design, to help speed up printing.
First thing I wanted to do was avoid printing Infill.
Second was to have minimum top and bottom layers but also not leave 'holes' in the top and bottom surface.
Attached is the solution I have come up with: covid19_headband_rc3_MK
This file has been changed so no infull is required: Top of Band Clip is now also slanted.
Bottom and top layer is never more than 1.5mm wide, thus closing all holes.
Recommended basic print settings:
For 0.4mm Nozzle:
Line Width at 150% or 0.6mm
Layer height at 0.3mm
Number of Top, Bottom and Wall Line Count - All at 2
For 0.8mm Nozzle:
Line Width at 150% or 1.2mm
Layer height at 0.6mm
Number of Top, Bottom and Wall Line Count - All at 1
Turn off any Gap Filling between Walls setting - this will stop and small extrusions that are not needed and will just shake your printer.
Calibrate Flow Rate for correct amount of plastic per line.
Add up to 30 degrees to the normal print temperature and keep upping the print speed as much as possible!
I am now able to produce a shield in about 16 minutes, using a E3D Super Volcano 0.8mm Nozzle, with my updated version of your RC3 file - a saving of about 10 minutes / print.
Please let me know what you think.
Thanks, Mark
RE: Changes to RC3 version for faster printing.
Hi Mark,
I've tried your model and it's so great! Made more than 100 of it.
I'm able to print one face shield in about 40 minutes using mostly stock Ender3 and 1mm nozzle.
Thanks so much for the modifications.
RE: Changes to RC3 version for faster printing.
@panforov-alex
That is good to know it is working for you.
Thanks for the update!
RE: Changes to RC3 version for faster printing.
@markgkahler
Have you tried doing them in stack?
Frankly, I've failed miserably, to the point they're inseparatable, or doesn't stick to each other.
RE: Changes to RC3 version for faster printing.
[...]
For 0.4mm Nozzle:
Line Width at 150% or 0.6mm
Layer height at 0.3mm[...]
For 0.8mm Nozzle:
Line Width at 150% or 1.2mm
Layer height at 0.6mm
Be aware that if using percentages for extrusion widths in PrusaSlicer, the result will be based on the layer height, not the nozzle size. 150% of 0.3mm layer height will result in 0.45mm extrusion width, 150% of o.6mm layer height will result in 0.9mm extrusion widths. None of these are a problem with the respective nozzle sizes. I am not sure why Slic3r originally did it this way.
Of course, if you didn't mean using percentages in the extrusion width, this all doesn't apply.
RE: Changes to RC3 version for faster printing.
@panforov-alex
No I have not tried to print stacked as I have a very large bed - issues might be due to bigger line width? Sorry I don't have any advice.
@bobstro
Thanks for the info on extrusion widths as I did have issues getting it setup with PrusaSlicer and ended up using Cura to get the desired results.