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Maintenance & Calibration

How to Level your Honeycomb bed to your Laser Head on your Thunder Bolt Machine

Step-by-step guide to leveling the honeycomb bed on the Thunder Bolt laser using the manual focus tool and allen wrenches.

2 min read1 videoUpdated Jul 2026
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Applies toBoltTopicMaintenance & Calibration

Preface: This article covers the basics of leveling your Honeycomb bed on your Thunder Bolt Laser

Quick Start Video


Complete Guide

Tools you will need

  • 2.5mm Allen Wrench (silver)
  • 4mm Allen Wrench (red)
  • Small Flat uniform material (MDF Disc)
  • Bolt Manual Focus Tool
Tools needed for leveling

Pre-Requisites

You will need to know how to jog the laser around the bed, how to auto-focus and to use the manual focus tool.

Process Description

Basically what you need to do is set a corner as your 0 point. At that corner (Back Left), you will do an auto-focus to your material on the honeycomb. Then double check that the Manual focus tool is calibrated to the surface of the material as well. Then you should jog to the opposite corner (Front Right) and check the levelness, then the other 2 corners.

Take a summary of which corner is off the most and start there. Note that as you adjust one corner, it can affect the others. As you adjust, go back and re-check your Zero corner (reset the focus if needed) and the other 3 corners. You should target +-.5mm as a maximum variance.

Zero Corner Example:

Zero Corner Example

How to Adjust the Corner Height

With the laser head and material disc in the corner, place the Manual Focus gauge on the laser head. Notice the gap that needs to be closed.

Gap to be closed

1. Loosen Main Bolt (4mm Allen wrench)

Each Corner Has 1 Bolt and two Grub Screws: Just barely loosen up the main bolt:
Corner bolt and grub screws Loosening the main bolt

2. Raise or Lower Grub Screws (2.5mm Allen Wrench) to Close the Gap

Turn to the Right to raise the bed Turn to the Left to lower the bed
Turn right to raise bed Turn left to lower bed

Gap Closed:

Gap closed

3. Tighten Corner Bolt

Tighten corner bolt

4. Next 2 Corners and 0 Corner

Do the other 2 corners and then go back to the 0 Corner and check it too. This process is iterative to get it level across the 4 corners.

Back Right: Front Right: Front Left:
Back Right corner Front Right corner Front Left corner

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