Cut into your objects using the object's geometry.

This product is FREE on: Gumroad

Press Ctrl + Shift + E in edit mode with one or multiple faces selected to destructively cut into the mesh

You can also access it from the Extrude Menu by pressing Alt + E

Notes:

• The addon is built upon Vladislav Kindushov and Martin Capitanio's Extrude Pull, see at Extrude Pull
• When cutting, the addon will add a cutter object slightly bigger than the original face selected in order to perform the boolean operation. This might add in some cases double vertexes that might need manual cleanup by merging them together