This place is so big I posted this in the 3D printer area, but it's likely a bit more valid here.
My buddy is launching a kickstarter based Mini T-Slot extrusion system for all things hobby.
Check it out here: OpenBeam - An open source miniature construction system by Terence Tam — Kickstarter
PM-45 CNC conversion in-process. Silly engineer wants to be a machinist.