Quote
A2
@nicholas.seward
Simpson 3d printer calibration:
What does calibration involve, after thinking about it I don't have a clue :S
If I were to guess calibration would entail some of the following:
Accurately measure the center to center distance of pivots (arm lengths).
Temperature control of hot end and platen.
End stop firing.
Stepper motor voltage, amps.
Platen leveling.
The amount of nonlinear movement of the end effector.
Range of motion (envelope perimeter).
Or is it about testing sleeve pulleys for the string, and things of that nature?
The sort of calibration that a delta printer needs depends on what you're trying to control. For GUS simpson, I'm most worried about inaccuracies in the coupling gears. If you can trust the bearings between the arm and the effector, then you can map the entire movement of the set of gears by using a probe to map the platen. As a bonus, you get bed levelling and z height calibration for free.
I imagine it will take some interesting math to translate a large number of z points into x/y calibration, but it believe it is possible.