3-level height adjustment via screw, max engraving height 27.56 inches, roller-compatible. Tool-free, fits various materials, stable focus for sharp engravings, user-friendly for beginners & pros. Carverall's laser engraver enables you to generate any image with simple prompts via our self-developed CutLabX software—works on phone & PC. Perfect for DIY crafts, personalized gifts & small business projects. Turn ideas into sharp, custom engravings in minutes! How to download software and set up for computer / phone / tablet? PC: Search CutLabX/LightBurn, download/install; eject TF card, install driver; power on and connect. Phone/tablet: Search CutLabX to download; connect Wi-Fi per manual; keep TF card inserted. Why is my camera positioning inaccurate? 1. Calibration issue: Re-calibrate/alignment; use manual QR, tutorial or after-sales. 2. Height changes: Re-calibrate if thickness changes; save settings. 3. Light interference: Use in even light; avoid strong light/reflections. Why can’t the camera capture the calibration card during calibration? 1. Turn off the machine before camera calibration. 2. Turn it back on to align after calibration. 3. We’re upgrading software and modifying card material to fix this. Is the A1 Pro plug-and-play? No. For first-time use, you need to do some simple setup steps: - PC: Download CutLabX/LightBurn, install driver, follow (Driver→Software→Connect→Setup). - Phone/tablet: Download CutLabX, connect Wi-Fi, keep TF card inserted. Can the A1 Pro engrave on large desktops or rocks? Yes, it can. Just remove the bottom engraving plate, and you can take it anywhere to engrave. Practical applications include: large wooden desktops, stone decorations, outdoor stone slabs, wooden cabinets, and rock souvenirs.