Some questions about kossel parts

Hello!

So I've got a micromake kossel and I've got some questions Google hasn't been able to answer that I hoped someone here could:

• I have a slightly smaller timing gear on one of the stepper motors that drives the belts for an axis. Is there a way to configure repetier host to compensate, or do all the steppers need the same size of timing gear?
• I am looking to upgrade my effector to a dual extruder. Does the spacing between the arms on the effector need to be the same? Is it OK if it is off by a couple of millimeters?
• When buying a second stepper motor for a second bowden extruder, how critical is it that the second stepper motor is the same as the first? Is it OK as long as the microstepping is the same?

Thanks

Not a delta owner but:

1. All timing pulleys needs to be the same.
2. All the spacing needs to be the same if not you will loose accuracy.
3. Doesn't need to be identical, depending on the added hotend and intended usage you can go higher or lower in the torque range.

1. In theory they can be different, if you configure your firmware for the correct steps/mm for each tower. I'm not sure if it is a good idea though.

2. What matters is that for each pair of parallel rods, the bearing spacing is the same at top and bottom. Different pairs of rods can have different spacings.

3. Not critical. Be aware that some firmwares don't let you configure steps/mm separately for each extruder.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Thanks

So, it sounds like I need to switch out the other two timing pulleys to be the same size as the one that I replaced.

Since all the timing pulleys will be a different size than what the printer came with, do I need to reconfigure anything inside of cura / repetier host?

The only thing you should need to reconfigure is the tower steps/mm in the firmware.

Edited 1 time(s). Last edit at 10/30/2016 08:02AM by dc42.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].