The extraordinary extruder

Preamble

Following on from Kossel 3D Printer, and the tutorial videos (see Kossel construction videos) the BuildA3DPrinter kit comes with an extruder stepper motor with a planetary gearbox. This results in a very high torque. However, as stated below, it has been replaced by the 3325_0, a motor with the same NEMA size and same torque.

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RC Motors

Preamble

Are you baffled by the numbers used to describe the plethora of RC motors which are available for multirotor fliers? So was I. So here is a brief description of what I have discovered whilst trying to make sense of it all. Continue reading RC Motors