We want to know how you have solved the most common problems in using Minicad. Please send your personal tips and tricks and eventually the bugs you've encountered.
Chances are there's some stuff in the background to small to be seen, or just behind another object.
Deactivate those objects before rendering - this can make a difference. Some job are impossible to render, till you found out that lots of 3D objects made by sweeping could also be made by simpler extrusion. How to join to extrusions at an angle. How to to contruct the intersection of 2 extrusions. With version 6.0 particularly, your screen can become cluttered with all the various palettes.