McWire creates a Mendel Part 2
I have assembled most of the Mendel now, just waiting on a new Z-belt from McMaster. The BoM for the Mendel has the wrong one listed, try this instead: 6484K512
The NEMA17 I have for the extruder is slipping. It is a KL17H247-168-4B rated at 63oz-in but I don't think I am getting that kind of torque using the Extruder Controler board. I have a spare stepper board I might try and drive it from. I am also going to attempt to build a Bowden cable with teflon lined tubing (McMaster Part: 4mm I.D. 5557K33 or 3mm I.D. 5557K38). This will allow me to use a NEMA 23 motor rated much higher (282 oz-in).
I moved the stepper controller mounting plate outside the frame to allow for the 4th stepper controller. I will probably move it as it might restrict the Y axis movement.
The next step is to attach the Z belt and finish the extruder.
Photos below:
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