Monport 40W / 60W CO2 Rotary Steps-Per-Rotation & Calibration Tool
Eliminate oblong circles and vertical stretching on the Monport 40W / 60W CO2. 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: Monport 40W / 60W CO2 (40W / 60W CO2)
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=80.000Always 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.
Monport 40W / 60W CO2 Factory Rotary & Optical Specifications
Pre-Rendered Specs| Laser Machine Model | Monport 40W / 60W CO2 |
|---|---|
| Laser Source & Optical Power | 40W / 60W CO2 (CO2 Glass Tube) |
| Supported Control Software | LightBurn (GRBL / Ruida) |
| Default Rotary Mechanism | Roller Rotary |
| Default Steps / Pulses Per Rev | 12800 pulses/rotation |
| Standard Drive Roller Diameter | 18 mm |
| Optical Beam Spot Size | 0.15 mm |
| Flatbed Restore Command | $101=80.000 |
| Focal Distance & Optics | 50.8mm • Use precision focal ramp or acrylic spacer stick against the top curve of tumbler. |
Step-by-Step Rotary Setup & Test Burn Checklist for Monport 40W / 60W CO2
- Remove floor plate and secure Monport rotary module on guide rails.
- Flip external rotary toggle switch to 'Rotary' on the machine console.
- Open LightBurn Rotary Setup dialog, choose Roller, input 18.0mm roller diameter.
- Enter pulses per rotation: 12800 for Ruida models, or calculate $101 for GRBL versions.
- Verify that the cup rotates away from operator during positive Y command.
Worked Calibration Example for Monport 40W / 60W CO2
Suppose you place a standard 20oz Skinny Straight Tumbler (Diameter: 73mm, Circumference: 229.34mm) onto the Monport 40W / 60W CO2.
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 Monport 40W / 60W CO2
Monport 40W / 60W CO2 Rotary Calibration FAQs
Q1: How do I configure the rotary attachment on the Monport 40W / 60W CO2 in LightBurn?
To set up the Monport 40W / 60W CO2 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 (18mm) 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 Monport 40W / 60W CO2?
The Monport 40W / 60W CO2 uses a baseline of 12800 steps per revolution for chuck rotary mode, and 80 steps/mm for flatbed Y-axis movement. Drive roller diameter on factory rollers is 18mm.
Q3: How do I reset the Monport 40W / 60W CO2 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=80.000 in the Console window to restore true 1:1 flatbed Y-axis gantry movement.
Q4: What is the best way to focus the Monport 40W / 60W CO2 on a cylindrical tumbler?
Use precision focal ramp or acrylic spacer stick against the top curve of tumbler. The focal length is 50.8mm with an optical spot size of 0.15mm. Always focus at the apex (highest vertical point) of the cup to ensure maximum beam energy density.