This castle resulted from the constraints that we have with printing volume and time. I wanted something that looked realistic, could be populated on each floor with furniture and people at 1:72 scale, yet that could still be printed on a 223x223mm printing plate.
These constraints may be similar to what the owner of an impoverished hilltop in South Germany, Bohemia or Austria would also have faced: limited space, limited construction timeframe and limited budget.
My other must-haves included a tile roof, a clockwise spiral staircase for mobility between floors, a fireplace on each floor, and sanitary facilities (there are two privies on level 3 with a wonderful view). Also, there had to be a watchtower with interior wood stairs between levels to observe and track approaching merchants, boatmen or other potential victims of banditry and extortion.
The walls, tower bases and the gate are interchangable with my previous post for a Roman-style frontier wall (in the file here the crenellations are smaller) and dimensions of all elements here are the same, so you can use any of the wall and gate files there to further customize your castle.
Note that the keep has three levels, there are main hall and spiral staircase roofs, and a rooftop floor. A drawbridge can be downloaded from a separate free post "Wall Segments With Gates, Drawbridge".
A complete version of the minimum-size castle that can be printed using these files is shown here in 1:144 scale, printed out at 50% size with PLA on an Ultimaker 2+ using a 4mm nozzle. The diorama in the picture includes a moat (not part of the model!).
As another test, I have added here also a 1:288 scale printout (25% size) of the entire castle, printed using a 0.4mm nozzle next to the 1:144 scale one. It still looks nice and not much detail has been lost.
This castle would also look nice in a model railroad display at 83% size (= 1:87 HO scale).
A picture also shows the main keep as well as the Watchtower with some of the walls in the much larger/majestic 1:72 scale (100% size), with some appropriate figures added. Enjoy !
Adjustment 24.10.2019: removed the left window on the staircase side in a new corrected mansion's roof file - the window shutters there tended to interfere with the top of the spiral staircase.
Adjustment 30.05.2020: On level 2, the tops of the two doorframes that lead to connecting walls were sticking out a bit too much. This caused problems when adding wall sections that had roofs from the roman wall post. To avoid tedious manual adjustment of these parts of level 2, here I have added an updated version that should work better with the wall sections that have roofs.
Adjustment 22.02.2021: Added a set of walls with tiled roofs and small crenellations, as well as an alternative Level 3 (actually this is the one shown in the 1:72 scale diorama picture). Also I added three renders of a castle that can be constructed using these new elements. The renders may be a bit over the top, so apologies in advance. On one hand it is a idealized version of what the castle can look like, on the other it shows what else one could do with these .stl files when one is not printing them out.....