Below are some pictures of my homebrew CNC Foamcutter that I made a few years ago. It was built as a testbed for my own Mac foamcutter software (still in build, but unlikely to be finished).
Hotwire bow support
bracket - ability to spin in C axis - height adjustable
Coaxial insulator
made from brass tube and plastic 6.5mm tubing
Front panel of the
stepper and hotwire controller unit
Rear panel of the
stepper and hotwire controller unit
General view of the
CNC foamcutter setup
Close-up of a Y axis
stepper mount
General view of the
Y axis mount
Another close-up of
a Y axis stepper
View showing bow on
carbon fibre bow mount
Hotwire keeper on Y
axis mount
View showing acetal
bearings
View of X axis
stepper mount - U channel aluminium
Closer view of Y
axis stepper arrangement and acetal shaft coupler
Close up of hotwire
keeper from glassfibre PCB material
General view of
setup
Opposite end of X
axis showing acetal thrust bearing