PRIME MOTIONGeneral
Settings → General holds the app-wide preferences. Every change saves as you make it; there is no Save button.
Design Storage
Store Designs on SD Card appears only when a removable SD card is in the tablet. On, your designs are kept on the card; off, in the tablet's own storage.
Changing it moves every design:
- Flip the switch. Move designs to SD card? (or Move designs to internal storage?) explains: Android deletes designs on the SD card when the app is uninstalled. Exporting a .pmd keeps a copy.
- Tap Move. The drawer shows each stage: Preparing designs…, Copying designs…, Verifying designs…, Finishing storage change…. It cannot be cancelled.
- When it finishes, the drawer closes and the switch shows the new place.
If the move cannot finish, Design storage says why, for example The SD card was removed. Reinsert it to use these designs. Close any open design before moving.
Display
| Field | Options | What it does |
|---|---|---|
| Preferred Units | Metric, Imperial (default Metric) | The units of the position readout, the jog step column (0.1–100 mm or 0.005–5 in), jog moves and the Designer |
| DRO Decimal Places | 2, 3, 4 (default 3) | How many decimal places the position readout and the Location card show |
In inches the position readout shows one more decimal place than the setting, so the default 3 reads three places in millimetres and four in inches.
File Handling
| Field | Default | What it does |
|---|---|---|
| Check File on Load | Off | Runs the loaded G-code through Grbl check mode; no cutting motion |
Loading a file does not move the machine. Check File on Load requires a connected, idle controller with no job running; it checks without cutting motion. Grbl resets when check mode ends, so home again before starting the job. A file containing controller or real-time commands cannot run through check mode.
Outline is its own command on Control. It runs only when tapped, with the homing, work-zero and travel checks required for motion.
Safe Z Height in Settings → Connection controls the retracts; General has no second height setting.
Stock Visualization
| Field | Range | What it does |
|---|---|---|
| Stock Margin XY | 0–50 mm (default 5) | Extra material drawn around the toolpath when a program does not declare its stock |
| Stock Margin Z | 0–20 mm (default 2) | Material drawn above work zero |
| Confirm on Exit | On / off (default on) | Asks Exit Prime Motion before the Back gesture closes the app |
The stock margins affect only the stock drawn on Control; they change nothing that is cut.