Adjustable Router Flattening Sled woodworking Jig

Making a homemade router sled flattening mill. This video is sponsored by Rockler Adjustable Router Flattening Sled: All my woodworking plans Materials list: This sled is 24in by 36in inside the rails dimension (3) Steel Tubes Glide rails frame (2) Steel Channels Tracks (4) Mending plate (4) Corner brace (did not used) (14+) Selftapping screws 48in TTrack (10 ) 3, 8 screws for TTrack Chisel Wood Glue Hold down clamp 1, 4 PlexGlass or other material (4) 1, 4 20 threaded insert (4) 1in 1, 4 20 screws (for the adjustable gu