Linear Bearing For Square Tube
Top view: Casters and Angle iron or L-channel of a Lift/Elevator/Ladder/Barn Door Mechanism Etc.
Corner Clamp. Similar clamps sell for over $100 in stores, this guy built it from scrap! Awesome job!
90 Degree Angle Fixturing Clamp Welding Plans
Bearing truck from aluminum strap
Bearing Trials Solsylva CNC Plans
Looking to find ideas in relation to woodworking? http://purewoodworkingsite.com has these things!