This is a two-part case. The lid holds the Wemos Mini D1 in a slot that leaves the pins available. The bottom has holes so that it can be used with an environmental sensor such as the BMP180 temperature/pressure/humidity sensor pack.
There is a cut out in the bottom to allow access to the USB port.
The case is screwed closed with 4x countersunk self-tapping screws.
No supports, rafts or the like are needed.
The author hasn't provided the model origin yet.