This enclosure for the ESP8266 Wemos D1 mini, support the Dupont BLS connectors to prevent that they disconnect from the header pins. This enclosure also protects the PCB and unshielded headers, reducing the chances of shorts or other unintended electrical connections.
The case holders don’t replaces the BLS connectors but it gives the Dupont jumper wire connectors extra support.
__Tolerance setting__ The tolerance between the bottom and top parts can be set by the margin3Dprinting parameter. Normally this shout be between 0.1 and 0.6 mm, depending on the filament, nozzle and printer. The enclosed STL is generated with margin3Dprinting=0.2.