How to slim down a cuboid? I would like to slim a cuboid with the base of the heart. I want to slim it down only in relation to the X and Y axes by exactly 0.4 mm. I would like the edges of the new and old hearts to be 0.4mm apart.
The scaling operation does not do what I would like. Gaps of various widths are created. I wish the gaps were 0.4mm wide everywhere.
I attached a picture from another program because it was easier for me to show my problem. The picture shows what I don't want to get.
Does anyone have an idea how to efficiently modify an object the way I would like?
I would make the heart shaped base, then make sure to Ctrl +  A to apply scale and rotation. Then select the surface and inset  I. You can type in the exact distance in the pop up on the lower left of the screen.
If you want to copy it to create a second object, press Shift +  D,  P, then Selected.
You can extrude that face to make a smaller heart.