The machine in 3D

Scale model in millimetres. The head paints a Starry-Night-style motif live: paint from the 24 cups, brush changes at the rack on top.

This is a concept model of an earlier design revision. The current build moves Z onto a 2040 profile with a separate motor and coupler, uses a laptop instead of a Raspberry Pi as the Klipper host, and changes the brush change to manual pause-and-swap. See hardware/ for the current state.

Z axis

Frame depth per BOM · 200 mm

Simulation

Speed 10×

Strokes0

Dips0

Swaps0

Brush–

Starting …

Part

Tap a part in the model or an entry below.

Assemblies

Assumptions in the model

The Y rails sit on the back of the front posts, as in the BOM's depth stack.
Leadscrew variant: the motor sits between the X plate and the motor block, above the profile. Hung behind the profile end it would hit the 60 × 60 plate (motor axis 35 mm above the profile centre, plate edge at 30 mm).
MGN9 rail under the 2020 profile; the riser reaches up sideways to the nut. Gives about 52 mm of Z travel.
Brush rack at 90 mm pitch. At 60 mm the bearing block (50 mm left of the brush) would hit the neighbouring brush.
The collet and the change sequence are schematic; the collet is not designed yet.
All brushes share the same ferrule (Ø 9 mm), bristle length 12–19 mm.
Paint cups Ø 30 mm on a board tilted by about 74°.
Canvas guide: side battens with support blocks, loaded from the top.
Counterweight in the left side bay with a 2:1 pulley; electronics box outside at the back.
The X rail (800 mm) overhangs the 700 mm beam by 50 mm on each side. (Later frame checks showed this combination does not fit; see the BOM.)
The motif is generated procedurally; it is not output from the real pipeline.