Add Slots And Tabs To Your Boxes In FreeCAD

When designing your sheet metal parts with tab and slots for laser cutting with SendCutSend, keep material thickness and finishes in mind

One panel has a pair of rectangular ports with a round hole in between, and the other has a matching pair of tabs with a smaller T-shaped slot

tab and slot joint Location in User Interface Context Menus Multibody Dynamics>Joints>Slot Joint Ribbon Physics tab with Multibody Dynamics selected: Global>Joints>Slot Joint

tab and slot welding table Blind Joint Components - Nuts for Pre-Assembly Insertion Double Joints Joint Nut for 8 Series Aluminum Frames from MISUMI