First Print: Peek Fan Shroud; Verifying Extruder Stepper Operation - SeeMeCNC Rostock MAX v2 Assembly Manual

For your first (and second!) prints, you're going to need to have ABS filament handy. This is
because the PEEK and Layer fan shrouds can be exposed to temperatures that would turn PLA shrouds
into a gooey mess. You're also going to need the 25x25x10mm PEEK fan itself.
You're just about ready to perform your first print! Before you can do that, you'll need to verify
that the stepper motor on the extruder is turning in the right direction.

Verifying Extruder Stepper Operation

Start Repetier-Host, turn your printer on and connect Repetier-Host to it. We need to bring the
hot end up to temperature for the direction test on the extruder.
The reason for this is that Repetier-Host will not allow extruder commands with a cold hot end.
Click the "Heat Extruder" button and set the temperature for 215C. Once the hot end is at
temperature, I want you to click the Extrude button.
The button highlighted in green in Fig. 23-1 is the
"forward" extrude button. Once you've hit your target
temperature, watch the knob on the extruder and click that button.
You should see the knob slowly turn counter-clockwise. If it's
turning clockwise, you'll have to make a change in the firmware.
It's a very simple change and you shouldn't have any problem at
all doing it.
If you've got backwards-running stepper motor, you'll
need to open the Arduino IDE and make a single change in
Configuration.h. Look for the following line:
#define EXT0_INVERSE true
Rostock MAX v2 Assembly Guide
23 – First Print: PEEK Fan Shroud
Fig. 23-1: Testing the extruder
stepper.
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