xTool F2 Ultra Rotary Steps-Per-Rotation & Calibration Tool
Eliminate oblong circles and vertical stretching on the xTool F2 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 F2 Ultra (22W Diode Galvo)
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.
$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 F2 Ultra Factory Rotary & Optical Specifications
Pre-Rendered Specs| Laser Machine Model | xTool F2 Ultra |
|---|---|
| Laser Source & Optical Power | 22W Diode Galvo (High-Speed Galvo Diode) |
| Supported Control Software | xTool Creative Space (XCS) / LightBurn |
| Default Rotary Mechanism | Chuck 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 | 150mm • Align focal indicator lights directly onto tumbler center line. |
Step-by-Step Rotary Setup & Test Burn Checklist for xTool F2 Ultra
- Fasten RA2 Pro securely onto the magnetic alignment base pins.
- Set software mode to 'Cylinder' with Chuck attachment.
- Measure diameter with calipers and input value into diameter field.
- Set split size to 2.5mm for ultra-fine high-density photo engraving.
- Test run perimeter framing (Red Light Contour) to confirm rotation clearances.
Worked Calibration Example for xTool F2 Ultra
Suppose you place a standard 20oz Skinny Straight Tumbler (Diameter: 73mm, Circumference: 229.34mm) onto the xTool F2 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 F2 Ultra
xTool F2 Ultra Rotary Calibration FAQs
Q1: How do I configure the rotary attachment on the xTool F2 Ultra in LightBurn?
To set up the xTool F2 Ultra in LightBurn: 1) Go to Tools > Rotary Setup. 2) Select your rotary type (Chuck). 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 F2 Ultra?
The xTool F2 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 F2 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 F2 Ultra on a cylindrical tumbler?
Align focal indicator lights directly onto tumbler center line. The focal length is 150mm 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.