xTool M1 Ultra Rotary Steps-Per-Rotation & Calibration Tool
Eliminate oblong circles and vertical stretching on the xTool M1 Ultra. Use our interactive calculator below to correct your LightBurn steps-per-rotation or GRBL $101 commands, then download a millimeter-accurate calibration ruler SVG.
Rotary Steps-Per-Rotation (SPR) & GRBL $101 Calibrator
Preset: xTool M1 Ultra (10W / 20W Diode)
Measure along the Y-axis (rotary circumference direction).
Enter this in LightBurn > Tools > Rotary Setup > Steps per rotation.
Safe continuous rotary perimeter without slipping: 224.7mm. Add weight (rice or water bottle inside cup) to prevent roller traction loss.
$101=100.000Always send this command in LightBurn Console after disconnecting the rotary attachment to restore flat Y-axis belt scaling.
Monetization Slot: Native Under-Download Banner
High-CTR placement positioned directly below the SVG export and rotary calculations. Configure your Adsterra native key in src/config/adsterra.ts.
xTool M1 Ultra Factory Rotary & Optical Specifications
Pre-Rendered Specs| Laser Machine Model | xTool M1 Ultra |
|---|---|
| Laser Source & Optical Power | 10W / 20W Diode (Multi-Function Diode & Craft) |
| Supported Control Software | xTool Creative Space (XCS) |
| Default Rotary Mechanism | Roller Rotary |
| Default Steps / Pulses Per Rev | 12800 pulses/rotation |
| Standard Drive Roller Diameter | 16 mm |
| Optical Beam Spot Size | 0.08 mm |
| Flatbed Restore Command | $101=100.000 |
| Focal Distance & Optics | 45mm • Use the manual focal probe arm to calibrate distance against the apex of the tumbler. |
Step-by-Step Rotary Setup & Test Burn Checklist for xTool M1 Ultra
- Insert M1 Ultra riser block beneath gantry frame.
- Plug RA2 Pro roller attachment into the right-hand chassis plug.
- Select 'Laser Cylindrical' mode in XCS software.
- Place tumbler on rollers and adjust roller spacing pin (A, B, or C).
- Run framed boundary check before starting full power run.
Worked Calibration Example for xTool M1 Ultra
Suppose you place a standard 20oz Skinny Straight Tumbler (Diameter: 73mm, Circumference: 229.34mm) onto the xTool M1 Ultra.
You enter a commanded test square Y-height of 20mm into LightBurn with the baseline of 12800 steps/rev.
If using GRBL steps/mm, the corrected formula produces:
Popular Tumbler Pairings for xTool M1 Ultra
xTool M1 Ultra Rotary Calibration FAQs
Q1: How do I configure the rotary attachment on the xTool M1 Ultra in LightBurn?
To set up the xTool M1 Ultra in LightBurn: 1) Go to Tools > Rotary Setup. 2) Select your rotary type (Roller). 3) Enter the factory baseline: 12800 steps/rotation (or check Y-axis $101 steps/mm). 4) Enter your roller diameter (16mm) or tumbler caliper diameter. 5) Enable the 'Rotary Enabled' toggle and test frame your object.
Q2: What is the factory default rotary steps/mm or pulses/rev for the xTool M1 Ultra?
The xTool M1 Ultra uses a baseline of 12800 steps per revolution for chuck rotary mode, and 100 steps/mm for flatbed Y-axis movement. Drive roller diameter on factory rollers is 16mm.
Q3: How do I reset the xTool M1 Ultra back to flat-bed laser cutting after rotary engraving?
When disconnecting the rotary attachment, disable 'Rotary Enabled' in LightBurn. For GRBL-based controllers, send the command: $101=100.000 in the Console window to restore true 1:1 flatbed Y-axis gantry movement.
Q4: What is the best way to focus the xTool M1 Ultra on a cylindrical tumbler?
Use the manual focal probe arm to calibrate distance against the apex of the tumbler. The focal length is 45mm with an optical spot size of 0.08mm. Always focus at the apex (highest vertical point) of the cup to ensure maximum beam energy density.