TOPIC:

Draw your wall, marking where you want your window to appear.



In the 2D view use the polygon tool to draw out the plan of the chamfer. Exaggerate the 2D object so that it goes beyond the wall


In the 2D view extrude the 2D polygon to a 3d extruded solid. Use the Construction - Extrude solid tool



Reposition and resize the extruded object as required.



Hide the extruded object in the Visibility list. You can reshape the original 2D polygon, and change its fill to white to show the chamfer in 2D view.

You cant add a normal window as the window cut out will interfere. To insert a window save a selected window as an ordinary 3d object and insert that. This object wont have a cut out associated with it

Normally, it is the window that creates the cut out in the wall, so in this case you will need to create your own cut out object. This is achieved using the extrusion tool.

Draw the 2D plan outline of the area to be extruded, then from this 2D outline create an extrusion object and place this object on the wall to create your own cutout.

See here for similar solution to an arrow slit

Applicable to Professional and Premium

the walls are 600mm thick and the cament is 300mm in. the opening has a chamfer. ie the casement is 800 wide but the inner opening is 1200 with ingos to a brest section. how to I create this detail.