H2 Series Dial Gauge Mount with Bed Tramming Gcode

Update 2026-02-14:

• Made the model customizable, suports face diameter: 52~61mm, supports shaft diameter: 6~12mm.
  • If you use the customizable option, remember to enable support. 
  • Tree supports with auto settings works fine. Supports are only needed for the main body, the shaft clamp doesn't need it.
• Updated design, split up the body for easier installation, also added a M3 screw hole on the side so you can clamp it down once installed. 
  • You'll need a screw that's M3x8mm or longer for this.

 

Update 2026-02-03:

• Added new g-code for H2C and H2S.
• Bambu Lab updated their bed tramming wiki page, now it provides a print profile for a 2mm feeler gauge block. So I've also added two new g-code files that allows you to use those blocks (identified with a _2mm suffix in the file name). 

 

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There are already a few indicator mounts available for the H2D, but none of them are designed with compatibility in mind for Bambu Lab’s manual bed tramming G-code (https://wiki.bambulab.com/en/h2/manual-bed-leveling).

 

The issue with existing mounts is that the tip of the dial indicator sits too low. It ends up dragging across the heat bed when manually positioning the toolhead or running the tramming G-code. This not only leaves visible marks on the bed surface, but it can also interfere with calibration accuracy, as the H2D relies on bed pattern recognition.

 

So I designed my own mount with one key improvement: the indicator tip sits just a few millimeters below the nozzle, keeping it clear of the bed until needed—making it fully compatible with the tramming routine. It also features an opening on the back, allowing one to easily push out the dial from the mount after the bed tramming process is done.

 

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Note: these instructions are for the old official bed tramming wiki, which is now obsolete. I'm keeping it here just as a reference.

 

Here’s a quick rundown of how to use this with the official bed tramming gcode (see link https://wiki.bambulab.com/en/h2/manual-bed-leveling):

1. Put the indicator in the mount, tighten the four m3x10mm screws.
2. Remove the face plate of the toolhead, then clip the mount onto it.
3. Start the manual bed leveling G-code.
4. When the nozzle touches the bed and the Z-axis stops moving, zero the dial indicator.
5. Adjust the bed leveling screws until the dial reads -0.1mm, which is about the thickness of a standard sheet of printer paper.

 

A quick demo video:

 

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Since the mount has an offset to where the right nozzle is at, I've made a customized bed tramming gcode to make the result more accurate, you can download it here: https://github.com/duke8253/h2_bed_tramming 

 

Please make sure you read the README for the customized bed tramming gcode, since it is a bit different from the official one.

 

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This mount is designed for a Clockwise Tools dial indicator (https://www.amazon.com/dp/B07888LX1R)

Face diameter: 57 mm

Shaft diameter: 9.6 mm

 

Let me know if you’d like a version tuned for a different indicator.

 

To secure the indicator to the mount, you'll need four m3x10mm cap head machine screws.

 

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Note: the print profile is designed specifically to be printed on an H2D, using PLA as support for PETG.