UUNA TEK iDraw 2.0 A3 Pen Plotter

The iDraw 2.0 is the machine most people should start with if they want A3-sized plots and don’t want to commit to AxiDraw money or solder together a DIY kit. It’s a belt-driven XY gantry that moves a servo-actuated pen across a fixed sheet, and in practice it does exactly what a pen plotter should: turn an SVG into clean, repeatable ink on paper.

Build and setup

Out of the box it’s a partial kit — the frame is pre-built but you’ll tension belts, square the gantry, and mount the pen holder yourself. Budget an afternoon. Once it’s dialed in, the aluminium extrusion frame is rigid enough that lines stay crisp even on dense, hours-long plots.

Pens and pressure

The servo lift is the heart of any plotter, and the iDraw’s is dependable. It accepts most fineliners and gel pens with the included clamp, and with a printed adapter you can run brush pens or technical pens. You’ll spend your first session tuning pen-down pressure and travel height — write those settings down.

Software workflow

Because it runs standard GRBL firmware, you’re not locked into a proprietary app. Most users drive it from Inkscape with a plotting extension, or generate G-code from vpype and stream it over USB. That openness is the iDraw’s quiet superpower: your workflow won’t die if one app stops being maintained.

Who it’s for

If you want the smallest possible gap between “I have an SVG” and “there’s ink on A3 paper,” and you’re comfortable with a little mechanical fiddling, the iDraw 2.0 is the easy recommendation.