This is what you can make on a lathe with a knurling tool.
It’s very easy to make.
The rolls are made from hardened steel and i have buy them by www.buitelaar.nl for 2 euro 50 each.
First we make the T part.
My part is 100mm by 50mm
I cut off two pieces. 80mm X 17mm
Measure the roll
The cam is 0.1mm thicker than the roll
The first part is ready.
Now we gonna make this part.
We need two of them.
The dimensions are 100mm X 20mm X 15mm
First we cut of one side. The hole is height 17 mm width is the thickness of the cam + 0.05mm
At the other side of the block we do the same but then with the thickness of the roll + 0.05mm
At the side of the cam we chamfer the edge. It doesn’t matter how big the side is.
At the other side of the block ( where the roll must come ) you must chamfer 2 sides
At the cam side we drill a hole of 6 mm through the whole block
At the side of the roll we drill a hole in the upper part with 6 mm and with the same drill we make a center in the lower part. There we must use a drill of 5mm to make m5 screw threat
Clamp the two parts together like this. ( look to the 2 chamfer edges on the cam part. ) and drill a 12mm hole in the middle through the blocks
Turn the blocks for 90 degrees and drill a 10mm hole through the 2 blocks like this.
Make 2 parts like this. round 11.8mm and 20mm long. The hole is M6
