This is a small signal box typical of those found on small country stations with a few sidings and signals to control. It is loosely based on the Wills kit of the same type of box. The door and window frames are separate components and are designed to be a snug fit into the aperture. The roof includes a scalloped ridge which can be printed without supports.

Bambu Lab

A1

Yes

0.060mm

Printing and assembly should be straightforward. The inserts may need to be drawn across 240 grit wet and dry to ensure a snug fit without bending.
The roof and walls are intended to be finished with suitable papers such as slates and timber cladding.

Depending on how you print this possibly using brims, then some clean up may be necessary. .

As someone who is familiar with how structures are built this was a straightforward draw up using known basic anthropometric data as a starting point. Ie doors are about 210cms high by 80 cms wide for the average human to be able to enter without banging their head. I used the Wills kit as inspiration and adapted it to suit my own railway.