Sub-Scale Demonstrator

Drag the aircraft to orbit; right-drag to pan; scroll to zoom. Select a cut or support and drag the straight X, Y, Z arrows to move it. For supports, drag the colored curved arrows to rotate about X, Y, or Z. Escape cancels a drag. X aft, Y right, Z up.

Open from the widget or load an aircraft JSON.

Inspect interior

Plane position (ft) Show opposite side

The section clips the display only, without rebuilding the solid. Solid bodies show a face at the inspection plane; shelled bodies reveal their interior. Export saves every constructed body part.

Scale

Aircraft JSONLinear scale factor

All lengths scale by this factor; wing area scales by its square.

S: —
b: —
MAC: —
Length: —
Construction: Per body part

Body parts

Select a body to add another cut.

Cuts

X–Z cuts mirror across Y = 0. A cut at Y = 0 is performed once.

0°

415 × 415 × 495 mm on the selected side of the plane. Swap Side moves the printer volume to the opposite side. Add Cut creates a preview. Position it, then press Perform Cut. Only the displayed volume walls and bounded base cut the body. The portion inside becomes a separate part; each disconnected outside piece becomes its own body, with no cuts extending beyond the volume.

Flange Width 10 mm

2 mm lip with a 45° transition to the inside wall.

Support

Select a support to edit it.

X–Y / X–Z: thickness along X. Y–Z: thickness along Y. These presets reset rotation. Straight arrows move the support; curved arrows rotate it about its center.

Support Thickness 4 mm

Selected cut / support center (mm)XYZ

Add Shell

Finish cuts first. Select a body above, choose its wall thickness, then press Add Shell. Sections is the fastest available routine.

Shell Thickness No Shell

1, 2, 3, 4, 5 mm, No Shell

Shell method

CAD

Load an aircraft to begin.

Native B-rep STEP parts in millimeters with smooth aircraft outer surfaces. Work on cuts in Solid Preview, then press Add Shell to create the configured walls and flanges. Editing construction returns to Solid Preview. Experimental section shelling offsets wing and fuselage profiles and lofts inner cavities. Other components may remain solid. Undo shell method switches back to the previous SDF routine without changing cuts or support settings. Both methods retain their approximate interior shell, flange and support geometry in the export.