M4 T-NUT for 20mm V-Slot profile

While I know of no scientific comparison test of every available option, the 8020 line of t-slot extrusions does offer a fastener strength

That's the advantage to working with a reliable and material that's designed for flexibility such as extruded aluminum What are aluminum

difference between end mill and slot drill The T-slot provides the ability to add connections and join profiles to closed ends This allows you to change your design without having to start from scratch

difference between slot and port T-Nut made for easy assembly of products that uses 20mm x 20mm V-slot aluminium extrusions