This two piece part replaces and adds to the acrylic stock cover on the Creality CR-10's Z-axis lead screw; It lets you manually control the hot end up and down (when steppers are disabled), which I have found to be VERY handy at times. For example when you're loading filament, stopping a failing print or first layer, you can easily lift the hot end by hand to give you more working space and a better view of the piece.

Works exactly the same as the earlier version I made, just with a bigger knob. This way it takes less spinning to manually up and down the hotend. Easily fluently movable with just one finger. Cover plate is the same as in the original version. FIX (as of 02-10-2018) Thanks to Thingiverse user wonkoderverstaendige I found out there was a tiny (but real) problem with the file. Basically the knob floated 0.002mm above the stem, which only caused a problem when sliced in particular way, but it had definitely a weak spot. So if yours snapped at any point, this is probably why. You should have no problems with the fixed file anymore. Sorry for the inconvenience if it got you frustrated! VIDEOS A simple quick and dirty demonstration by me of how the knob works:

And a more professional video by Chuck Hellebuyck on how to install the knob (and some other useful CR-10 (mini) mods) on Filament Friday (3 minnutes and 23 seconds in).

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Print Settings Notes: Print the knob upside down. No supports needed. Pictured parts are printed in Das Filament PLA at 210°C/50°C on the Creality CR-10. Post-Printing Just swap the acrylic stock part with the freshly printed cover plate, using the stock screws. The knob then simply screws onto the lead screw until it's snug enough to let you control both up and down movements with it.

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