This was one of our first commercial retail 3-D printers. It did not have an "heated bed" as it was not a standard at the time of release. It was interesting that the instructions asked you to 3-D print your own filament spool holder,- at the time of release it was not very common to not have all "required tools" included with a "purchased product".

Printing in M3D Thermal Sensitive Filament; filament that changes color with light heat or temperature change.