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Your first model

Five minutes, from an empty scene to a rounded block you could 3D-print. Everything is typed at the command line — the box at the bottom of the window. Press Enter after each entry; Esc cancels a command.

Right-click = Enter

Anywhere in the viewport, a right-click does what Enter does — it runs the command you've typed, accepts a value, or repeats the last command. You rarely need to reach for the keyboard's Enter key.

1. Start a new model

Launch Serpentine3D and pick New model → millimetres on the welcome screen. You get an empty grid and a construction plane.

2. Make a box

Type box, then give two opposite corners:

box
first corner:   0,0,0
opposite corner: @40,40,20

@40,40,20 is relative to the first point, so you get a 40 × 40 × 20 mm block. It appears shaded on the grid.

3. Round the edges

filletedge

Click the edges you want rounded (they highlight), right-click when you're done, then type a radius:

radius: 5

The block rebuilds with 5 mm rounded edges. (Prefer dragging? Hold Ctrl+Shift and click an edge to get a fillet handle on the gumball.)

A bigger radius rounds the edges further — the exact solid rebuilds each time.

4. Look around

  • Middle-mouse drag orbits the perspective view and pans Top, Front and Right · Shift + middle-drag pans · Ctrl + middle-drag orbits whichever view you are in · scroll zooms
  • F1F4 snap to Top / Front / Right / Perspective
  • Ctrl+E zooms to fit everything

5. Save it

save

.serp files are self-contained (they carry a thumbnail and autosave cleanly). Give it a name and you're done.

6. Export it to print

export

Choose STL — 3D printing, pick a quality (Fine is a good default for curved surfaces), and you have a watertight mesh ready for any slicer. Want to check it first? Run printcheck, select the block, and you'll get a watertight / manifold / thin-wall / overhang report.


Next: the longer stage-flat tutorial builds a real theatrical flat and documents it on a drawing sheet — or jump to Export for 3D printing.