BaronWilliams wrote: ↑
Wed Mar 23, 2016 1:50 am
One of the main causes of a 3D printer jam is exceeding your 3D printer's feed rate.
Most 3D printers cannot print ABS faster than about 13.50mm³/s using a 0.40mm nozzle. Filament manufacturers should tell you this. But instead they give mm/s speed recommendations, which is nearly useless. If your printer can print ABS at 13.50mm³/s, like mine can, then that's what your printer settings should be based off of. Every setting should stem from that. Some printers can print ABS a little faster, some a little slower. If you know your feed rate, and don't exceed it, then you can adjust layer height, extrusion width, print speed, etc., and never worry about your printer exceeding the feed rate, clicking from it, and jamming from it.
The maximum feed rate for a particular filament on a particular printer is a constant value. Being able to set a limit for the feed rate is something you only need to do 1 time for a given filament, and a given printer configuration. It doesn't change, unless you change filament type, or change printers, or change your printer configuration. However, with Simplify3D, changing extrusion width, extrusion multiplier, layer height, print speed, etc., all change the feed rate, and unfortunately Simlify3D gives you no indication of the feed rate it will use based on all these settings. You need to calculate this on your own to know if you've exceeded your printer's feed rate for the filament you're using. I have a spreadsheet that I use for this now.
Here's a photo of a spreadsheet I use to calculate the proper maximum print speed at different extrusion widths and layer heights, to ensure that I don't exceed my printer's feed rate for ABS, which is the typical 13.50mm³/s on my printer when using a 0.4mm nozzle. I use this spreadsheet all the time. As long as I follow this, MY PRINTER WILL NEVER CLICK. I don't worry about exceeding my feed rate, as long as I use this spreadsheet.
Simplify3D should automatically prevent me from exceeding my printer's feed rate. I should not need my own spreadsheet for this. If we had Default Feed Rate
and Maximum Feed Rate
settings as I proposed above in my initial request, I could delete this spreadsheet and never look at it again. Boy would that be awesome.