Thermostat adapter which allows using modern electronic thermostats with M30x1,5 threads on (older) M28x1,5 radiator mounts.
The adapter consists of two parts. The pin has been designed with a length of 20 mm (4.4 mm diameter). Different thermostats/radiators may require a different length.
The adapter has to be printed in ABS (or any other material with a high melting point). PLA gets too soft when the radiator heats up.
The adapter can be printed with or without support. It has to be printed in ABS (or other materials with a high melting point) due to thermal stability. PLA is not suitable.