Boolean Operations

Drop in here to discuss whatever you want.

Moderator: andrew

Registered Member
Posts: 1
Joined: Fri Nov 25, 2011 10:32 am

Boolean Operations

Postby sgoswami » Fri Nov 25, 2011 10:59 am

I would like to make a shape defined by a subtraction of two shapes. Eg. A rectangle with a hole in it. Ideally, I would like to draw the rectangle, the circle inside, and then 'subtract' the two, so that when I hatch this it gives me a rectangle with a hole. How do I do this?

User avatar
Site Admin
Posts: 4129
Joined: Fri Mar 30, 2007 6:07 am

Postby andrew » Fri Nov 25, 2011 11:04 am

QCAD does not work with surfaces but with lines, arcs, circles. A rectangle for example consists of four lines.

To hatch a rectangle leaving a circular island inside, please proceed as follows:
1. Draw rectangle
2. Draw circle inside
3. Select rectangle and circle
4. Menu: Draw -> Hatch
5. Choose pattern in hatch dialog and click OK

Return to “Chat”

Who is online

Users browsing this forum: No registered users and 1 guest