ACM·3D
Studio

Façade cassettespro

Star cassette

Four-point star: ridges from the apex to the lifted corners, valleys to the edge midpoints. Eight facets, one slit, zigzag edge with split returns.

Open in the studio
The same pattern, drawn by the same engine: what is on screen is what goes to the machine.
Star cassette — 2 × 2 panel wall, single panel and flat pattern — generated by the engine with the default parameters.
2 × 2 panel wall, single panel and flat pattern — generated by the engine with the default parameters.

ACM 3D Studio

Developed
739.4 × 542.9 mm
Material
ACM 4 mm
Folds
23
Mark
star

Fabrication data

Star cassette — at 600 × 400 mm in 4 mm ACM, this family unfolds into a 739.4 × 542.9 mm flat pattern with 23 folds, including 814 mm of groove machined from the visible face, with the sheet flipped for that pass. A 1,500 × 3,200 mm sheet holds 8 of them, for 40.3 % waste.

Developed size (flat pattern)739.4 × 542.9 mm
Material per panel
0.358 m²
Folds
23
Total groove length
5,584 mm
Cutting length
3,663 mm
Corner slits
5
Corner reliefs
8

V-grooves (apex angle)

  • 23.6°1,447 mm
  • 90°1,328 mm
  • 76°1,197 mm
  • 80.6°797 mm
  • 11.3°608 mm
  • 7.4°206 mm

Panels per sheet

  • 1,220 × 2,440 mm6(27.8 % waste)
  • 1,500 × 3,200 mm8(40.3 % waste)

DXF layers

  • CONTOUR3,663 mm
  • RAINURE_902,125 mm
  • RAINURE_1351,447 mm
  • RAINURE_1001,197 mm
  • RAINURE_AVANT_160front face814 mm

The names and colours your CAM software will show. RAINURE_AVANT: fold concave on the visible face, sheet flipped for that pass.

Computed by the engine at the default parameters, on 4 mm ACM and the reference router. Your own machine and material profiles change these values in the studio.

Parameters

ParametersRangeDefault
Width200 – 3,000 mm600 mm
Height200 – 3,000 mm400 mm
Relief height5 – 150 mm50 mm
Corner lift2 – 150 mm20 mm
Apex position X20 – 80 %50 %
Apex position Y20 – 80 %50 %
Return depth0 – 200 mm40 mm
Fixing tabs—✓
Tab width10 – 60 mm20 mm

PresetsCentred starOffset starDeep star

Manufacturing constraints

  1. The return must exceed the groove width plus half the bend deduction, or the groove eats into the return.
  2. Facet-to-facet folds are grooved with the smallest cutter of the profile, V left open: the angle is held by the geometry. The angle between two facets must not exceed that cutter’s apex angle.
  3. Vertical returns, all tabs flat in the −D plane (rail mounting). The facet-to-return fold is 90° ± slope: below 90°, the 90° cutter is left open and the return is held by the riveted tab; above 90° (facet descending towards the edge), a wider cutter (60° nominal = 120° apex) or the machine profile’s overfold tolerance is needed.
  4. Every raised vertex requires a V-slit to the edge (a flat sheet has 360°, the relief less). Near the vertex the slit is narrower than the contour tool: it is cut along its axis and the tool bites each facet by up to Ø/2.
  5. Tabs are shortened at every corner and every kink of the edge so they never collide behind the panel: by (return + 2 mm), and more on a sharp corner, where the bisector must be cleared (tab width ÷ tan(angle/2)). An edge too short gets no tab.
  6. The apex must be a peak (the eight facet angles sum to less than 360°): lifting the corners flattens it, so the apex must then be raised.
  7. The corner lift stays below the apex height, otherwise the ridges become valleys and the star inverts.

Further reading