@kitten_tech @tubetime yeah. only semi-exotic parts I can think of would be the rubber rollers, and you might be able to get away with printable TPU or some kind of off the shelf rollers... maybe even just metal shaft with grippy elastomeric tubing slipped over it.
that is assuming you're building a plotter that roll feeds paper, a flat platen type with X-Y positioner would basically be achievable with some extruded frame and linear guides or those doinky rollers 3d printers use
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