Bare Bones Bicycle Fork Jig

Step 4 Mount the clamp on the spacer

Cut a piece of the 1 x 1.5 aluminum tubing to the same width as the clamp. First, scribe a line 1/8" from the long edge. This way you can see if the mounting holes will clear the walls of the tubing when you drill through. Put the clamp on top of the spacer as shown. making sure the mounting holes clear the lines you scribed along the edge, and mark the mounting holes. Then drill and tap them to M5. I only used two bolts, on the diagonal, as you can see in the picture. Don't bolt on the clamp just yet.