Faulty double extrusion

[ajlittoz]

OS: Fedora 34 (Server Edition) (KDE)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.Unknown
Build type: Unknown
Python version: 3.9.4
Qt version: 5.15.2
Coin version: 4.0.0a
OCC version: 7.5.0

I redesigned my building project trying to be rigorously structured and parametrised (with a spreadsheet).

For that, I made a single sketch for the outer walls and a single sketch for the inner walls. The inner walls are made of two non-connected sets of walls, notably two parallel wall delimit a corridor.

Doors are based on a template sketch. This sketch is first duplicated, attached to a face and finally made into a door.

The weird thing is the door outline is also cut from the opposite wall, as if the door outline defined an infinite extrusion volume and any shape intersecting this infinite volume will be clipped.

FreeCADdoublePunch.png (48.28 KiB) Viewed 1226 times

Is this because I grouped all my inner walls inside a single "object"? What did I do wrong?

52ParmelanParm-S.FCStd

(188.22 KiB) Downloaded 44 times

[Roy_043]

You need to change the Hole Depth of the doors. Currently the Hole Depth is zero which means it is calculated based on the dimensions of the window or door.

[ajlittoz]

Thanks.

As a safety measure, I set the hole depth to twice the wall thickness though wall thickness seems to be sufficient. This way I have a reliable cut but is this overkill?

[Roy_043]

I would also make it bigger than the width of the wall.