Has anybody tried 3mm filament in airtrippers filament drive for rostock?
I've heard that 3kg is neccesary to get 3mm filament to extrude on a good extruder.
My motors are rated 4.8kg/cm at 2.5amp max.
My stepper drivers should handle up to 2amp with heatsinks and fan but hopefully we won't need all that amperage.
Max torque when the motors are running on 2amps should be as follows: 4.8kg/cm * 2amp/2.5amp = 3.8kg/cms of torque.
The filament drive gear I was looking at buying is 8mm in diameter, so it has a 4mm radius (shaft on motor is 5mm diameter = 2.5mm radius)
So 3.8kg/cm / .4cm = 9.5kg of torque pushing the filament when the radius is 4mm. That should be plenty.
A 13mm gear is also avaliable. If 13mm gear is used radius is 6.5mm so:
4.8kg/cm / .65cm = 5.8kg of torque. Which should also be enough.
Any mistakes? Would this work? Is it practical?
Or rather, has anybody tried this?
TTN
I've heard that 3kg is neccesary to get 3mm filament to extrude on a good extruder.
My motors are rated 4.8kg/cm at 2.5amp max.
My stepper drivers should handle up to 2amp with heatsinks and fan but hopefully we won't need all that amperage.
Max torque when the motors are running on 2amps should be as follows: 4.8kg/cm * 2amp/2.5amp = 3.8kg/cms of torque.
The filament drive gear I was looking at buying is 8mm in diameter, so it has a 4mm radius (shaft on motor is 5mm diameter = 2.5mm radius)
So 3.8kg/cm / .4cm = 9.5kg of torque pushing the filament when the radius is 4mm. That should be plenty.
A 13mm gear is also avaliable. If 13mm gear is used radius is 6.5mm so:
4.8kg/cm / .65cm = 5.8kg of torque. Which should also be enough.
Any mistakes? Would this work? Is it practical?
Or rather, has anybody tried this?
TTN