Dual Power 12V-24V Aluminum Heated Bed for Reprap 3D Printer Kossel Rostock Delta.
This heated bed is made of 3mm aluminum. Overall diameter 265mm.
We recommend to use pre-wired NTC 3950 thermistor instead of SMT thermistor (Tiny NTC 100k thermistor can be soldered on the bed) and attach it underneath the print surface with kapton tape. This way you will not have to worry about soldering of tiny SMT components.
Please see supplied drawing for dimensions and mounting hole pattern.