I’m trying to create a replacement cover for a battery compartment and dont know how to subtract part of my object so I have a backing plate with a 3mm lip around the edge.
I have created a solid rectangular that is 89mm wide by 68mm long and is 7mm deep but I can’t work out how to subtract part of the object so there is a 4mm high lip around the edge which is 3mm wide so it fits snugly around the compartment.
I want to decrease the depth of the red section by 4mm with a 3mm lip left around the edge so I can fit it onto the compartment.
Can anyone give me a step by step on how to do this?
I am fairly computer savvy but have no experience of building objects in 3D.
Any help gratefully accepted!