If your design is highly detailed, the cutter's internal buffer cache might be overflowing. In your software port settings, switch the Flow Control from None to Hardware (RTS/CTS) .
I can provide tailored steps to get your plotter cutting correctly. Share public link Rohs 721 Cutting Plotter Driver Pc
Access official drivers via the Longprint support portal or look for specific brand drivers like on Driver Scape . Third-Party USB Drivers: If your design is highly detailed, the cutter's
You will need to temporarily restart Windows in "Advanced Startup" mode and select the option to Disable Driver Signature Enforcement . Once disabled, reinstall the driver following the steps in Step 2. Summary Checklist for a Flawless Setup Requirement Correct Setting / Action Driver Type CH340 Serial-to-USB or FTDI VCP PC Port Type USB 2.0 (Black/Grey port preferred) Software Model Selection Refine MH721 / Rohs 721 Connection Protocol COM / Serial (Match Device Manager number) Flow Control Hardware / RTS-CTS Share public link Access official drivers via the