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Changes to Step #87

Edit by Michael Hackney

Edit approved by Michael Hackney

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[title] Setting up the extruder
[* icon_note] Remove the ''idler assembly'' (two ''thumbscrews'') if it is installed.
[* red] Put a mark on the ''extruder drive gear'' with a black permanent marker as shown in the first photo. This will help you observe the extruder's rotation and rotational direction.
[* red] Clip 300mm (12") of filament from your spool - we ++highly recommend++ you use either PLA or ABS for commissioning your printer and until you get familiar with 3D printing.
[* red] If the blue silicone sock that insulates the hot end is not installed, install it now . Then heat your hot end to 195°C for PLA or 220°C for ABS and allow it to come up to temperature and stabilize for a few minutes.
[* icon_note] Now you are going to hand feed some filament into the hot end to make sure the passage is clear and to start to develop a feel for how much pressure is required to extrude your filament. It helps to clip the end of the filament at a 45° angle with a small pair of wire cutters or sharp scissors.
[* red] Insert the angled end of the filament into the hole at the top of the effector and down into the extruder and hot end as shown in the second photo. Keep pushing until 25mm (1") of filament comes out of the nozzle.
[* red] LeaveRemove the filament in place and attach the ''idler assembly'' on the extruder. The third photo shows the proper orientation with its narrow opening e positioned away from the ''extruder stepper motor''. Turn the ''thumbscrews'' to tension the ''idler''. There should be a very small (.2mm) gap between the spring coils when tensioned properly.
[* icon_note] See the first photo on the next step, there was not enough room for it on this step.
[* red] LeaveRemove the filament in place and attach the ''idler assembly'' on the extruder. The third photo shows the proper orientation with its narrow opening e positioned away from the ''extruder stepper motor''. Turn the ''thumbscrews'' to tension the ''idler''. There should be a very small (.2mm) gap between the spring coils when tensioned properly.
[* icon_note] See the first photo on the next step, there was not enough room for it on this step.