Dial Gauge Clamps for XYZ Axis Calibration

These clamps are designed to mount a Neoteck dial gauge to an Ender 3 Pro 3D printer, but they can also fit any other printer that has a 20x20 [mm] square X axis gantry and a 40x40 [mm] Y axis gantry. The clamps allow you to attach the dial gauge to each axis and measure the accuracy of your printer’s movements. The clamps are compatible with any dial gauge that has the same dimensions as the Neoteck model. I have included photos that show how to install the clamps on each axis.

Please be very careful when sending move commands while the dial gauge is attached. You may cause a collision between the printer and the dial gauge, which could damage both devices. I am not liable for any harm you may cause to your printer or yourself.

If you are wondering why you would need these clamps, they are useful for calibrating your XYZ steps. This is a process that ensures your printer produces accurate and consistent prints. You can learn more about it from TeachingTech's calibration site. 

The bolt holes are 7 [mm] in diameter. It is not drastically important that you find a bolt that fits perfectly, just getting something through the hole and tightening it down by hand is more than enough to hold the dial gauge and the clamp in place.

The photos of the build plate are showing you how to orient the objects when printing for the best results. You do not need to print them all at once. 

Your bed may not align with where the dial gauge is mounted in the y axis, so I have included a little wall that clamps onto the bed to give your dial gauge something to press against. Make sure that its on flush to the back wall, and you'll see it shouldn't move when taking measurements.

The y bracket should mount flush to the 40x40 gantry, and have room for the belt to move freely. It does on mine. If your belt is rubbing you can try to just scale the part, but let me know so I can see if its a reoccurring issue and I will increase the height of the gap. 

If anything doesn't fit at first (maybe because your printer isn't calibrated and you need a tool like this to calibrate it) just try scaling the parts in x/y/z in your slicer until you get it to work right.