Hello: I have been trying to print the marble run kit, and everything seems to be OK, but the lift chain comes out pretty much solid, or at the very least, incredibly stiff. Is there a trick to printing that thing or a setting that needs to be changed? I don’t want to give it to the kid only to have it break immediately.
Any help would be appreciated. Thanks
Got a pic? Also, what speed and material?
Flow calibration or set flow to 0.9
That worked great - Thank you. How did you come up with 0.009? Is there a section in the docs that describes how flow numbers work?
There are some calibration prints that you can run to determine these settings with the various filament that you use. Orca slicer for instance has a built in flow rate calibration prints.
Click on “calibration” in the top menu list and then “flow rate” → “Pass 1”, print it, and then look for the “smoothest” surface (if 2 look similar, pick the higher flow rate value since in pass 2 it will make changes at -1% intervals).
Use the following formula to modify the filament’s current flow rate using the above offset that you determined by actually printing:
({Current_Flow_Offset} * (100 + {Offset_Modified_From_Pass1})) / 100
For example, say your current offset is “0.95” and the Pass 1 test shows you should be using -5%:
(0.95*(100+ (-5)))/100 = (0.95*95)/100 = 0.9025
Set that as your filament’s new flow rate and now print the Flow Rate “Pass 2” calibration test. Look for the one that has the smoothest surface, and if you need to make an additional change, use the same formula from what you did in “Pass 1”.
So for example if after printing you saw that -1 is the smoothest surface:
(0.9025*(100+ (-1)))/100 = (0.9025*99)/100 = 0.893475
You now have a fairly well optimized flow rate for that filament (at your current melting temps/usage)