R450 / MK3S+ donor project

Roller pen plotter

Design study

Complete warm-grey and graphite roller plotter with rear paper roll, transverse pen carriage and orange transport keys

Complete appearance concept. The revised razor head is a separate mechanism study.

Roller transport

Paper width: 450 mm
Starting roll: 30 m
Pen bodies: 5–35 mm
Printed material: ABS
Printer envelope: 256 × 256 × 256 mm

Paper supplies the feed axis; the pen travels across it. Fixed edge guides and a persistent feed ledger track the roll.

One thumbwheel, hinged band, V cradle.

Current build status

Not ready to build. The whole plotter still has unresolved part clashes and failed print features. The cutter has isolated CAD, motion and supports-off slicing checks; physical cutting, fit and integration remain untested.