Creating a Tab and Slot Feature on a Mitered Weldment

Are there any easy way to design with t-slot extrusion? slot and tab design A great way to work around this challenge is to design tabs into one part and slots into another so the two parts may be aligned without the slot in ovens That is why many designers are now turning to self-fixturing design technique to reduce the assembly and setup costs in the manufacturing

slot 81 When a design calls out for a tab to be inserted into a slot and then welded over, what type of joint would this be considered?