T-Bot Core XY Printer, without any cross belt

Large build size, small external dimension.
No crossed belt .
Cheap and silent brass bearing .

Pulley GT2 20 tooth

MK8 Drive Gear Extruder 11mm/9mm

For Build size 240mm x 240mm x 200mm you need:
Aluminum extrusion
8 piece 20mm x 20mm x 400mm
4 piece 20mm x 20mm x 600mm

Steel rods
2 piece 8mm x 400mm
2 piece 8mm x 370mm
2 piece 10mm x 420mm

Bearing
17 piece MF105 5x10
4 piece LM10UU