PRIME MOTION01NURBS Designer
A parametric 2D/3D designer built on a NURBS geometry kernel. Lines, arcs, splines, constraints, dimensions — S Pen first, drawn at the machine, not exported from a desk.
CNC CONTROL · CAD · CAM — ONE TABLET AT THE MACHINE
Design it, toolpath it, probe it, cut it. Without leaving the machine.
Prime Motion is a professional CNC control and CAD/CAM application for Android tablets. A NURBS-native designer, joinery, 14 CAM operations, a probing fleet, mesh leveling, and a G-code sender for Grbl and grblHAL machines — connected over USB, working at the spindle, on or off the network.
X
+124.500
Y
+082.775
Z
−003.175
UNIT
mm
What ships in the box
02Joinery
Cut-ready joinery designed in place: box joints, dovetails, mortise and tenon, and panel-lane joints that carry through to toolpaths.
0314 CAM operations
Profile, pocket, adaptive clearing, drilling, V-carve, and the rest of a 14-operation 2D/3D milling suite, with tool library, stock setup, and simulation before a single line is sent.
04Probing fleet
Corner probes, surface probes, and tool-setter cycles with guided, plate-prompted workflows. Work offsets set from the part, not from guesswork.
05Mesh leveling
Probe a grid across the stock, and Prime Motion bends the toolpath to the measured surface — engraving and shallow work stay at depth across warped or tilted material.
06G-code sender
A production sender for Grbl 1.1 and grblHAL controllers over USB: jogging, macros, overrides, job history, and a live digital readout tuned for a gloved hand.
One workflow, no file shuffle
AFrom sketch to spindle
Design, toolpath, probe, and run from the same application. No exporting from CAD, importing to CAM, and carrying G-code to the controller on a USB stick — the design you drew is the job you run.
BBuilt for the shop floor
Dark, dense, high-contrast instrument UI. Works offline at the machine — your subscription tolerates up to 10 days without a connection, so a dead shop Wi-Fi never stops a cut.
Compatibility
| Controllers | Grbl 1.1 · grblHAL |
|---|---|
| Connection | USB (USB-C OTG serial) |
| Platform | Android tablet · S Pen recommended for CAD |
| Machines | Hobby-to-professional gantry routers and mills running Grbl-family firmware |
| Offline | Full function at the machine; entitlement check tolerates 10 days offline |
Pricing
$249/year (about $20.75/month — save $99 against monthly) or $29/month. Every plan starts with a 30-day trial: card required, $0 today, cancel anytime before day 30 and keep the rest of the trial.