Changing over my direct drive extruder stepper to this 5.2:1geared Kysan stepper.

3D Printing
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Changing over my direct drive extruder stepper to this 5.2:1geared Kysan stepper. Upgraded my machined hobb to the blddk hobb from Makers Tool Works. Hope this helps all the filament stripping issues I have had recently.

On a side note is anyone else using an Ezstruder with a E3D hotend? There is vertical slop because the groove in the E3D is larger than the retention band in the Ezstruder. It makes leveling the nozzle a pain and moves up and down with feed/retraction. I am using a washer above the E3D to hold it down for now… But would like a more elegant solution.

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I ended up wrapping some 1/4" kapton tape around the neck of the e3d a few times so that the ezstruder halves fit rather snugly. Haven’t had any issues with it moving.

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@Brian_Evans thanks I will give that a try tonight.

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The standard j head interface, AFAIK, is intended to be pushed downward from the top and held in place by the groove. This sandwiches the top flange, keeping the hotend preloaded in compression. You might be able to wedge some aim in addition to the washer. Won’t look better, but will prevent movement during retract

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I always just packed it out with washers we I was running a single E3d. You can always print yourself a nice little washer to go above.

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@Tim_Rastall I can’t believe I didn’t think of that. I was bending a washer with a crown so it was the right thickness :slight_smile:

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Derp, I had thought to comment about printing a washer, but I had assumed you had thought about that. We all know what happens when we assume I guess.

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@Eric_Moy it is a catch 22 though. I couldn’t get anything to print because of leveling, so I needed the washer first.

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Gotcha, I feel your pain. Fortunately I have a Makerbot at work… Which has 2 extruders so there’s a built in backup for the inevitable extruder failure

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Cool, what size of motor you have used (Nema 8, Nema 11)
Do you have part number of motor ??

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@Denis_Seguin sorry for the delay. It is a Kysan nema 17 - 5.2:1 - PN# 1040221. I think it was around $29.99 USD.

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Thank you,