Elegoo Centauri Carbon dial indicator holder (8mm stems)

UPDATE: If you remove the printhead cover, you can keep the hotend cables connected and boot the printer to use motorized motion of axes. IMPORTANT: Do not remove the hotend from printhead before homing. After homing you can remove the hotend and neatly attach it to the side of the holder with double sided tape. Beware if you move too near X = 0 the heatsink will crash. OR you can just connect a dummy thermistor to the board (it is ZH1.5 connector for the thermistor) and boot the printer. Even in that case it is best to home the axes before installing the indicator on the holder.

This will only accept dial indicators with flat back, there is no clearance for lug back covers. I used this with an Insize 2308 10mm course dial indicator. For my indicator there was an 8.3mm distance from back cover to the center of the stem, this is the only measurement that matters to ensure if this holder can be used with your indicator or not. Any other 8mm stem dial indicator with this dimension equal or smaller than 8.5mm should work. I tried to put the indicator probe as close as possible to the nozzle's position (in XY plane) so there is not much clearance in this version.

Printed with PLA+ 0.4 nozzle, 0.2 layer height. Do at least 4 perimeters (6 better), 4 bottom/top layers (again 5-6 better) for rigidity and 50% infill. You can also go with 100% infill for most rigidity as there won't be much weight nor print time difference. No supports are needed.

You will need an M3 nut and an M3x14 socket cap screw for fixing the indicator stem. For fixing the holder to the printhead you can use the hotend cap screws.

I also strongly recommend yamikinyu_com's connector pullers for removing the hotend connectors from the board. They worked brilliantly.