I bought a kit for Hemingway's Sensitive Knurler. Thought it would do me good to machine some parts to a specification.
Nice drawings. But no tolerances on dimensions which seems like a really poor idea.
I'm making some progress, but I was surprised how complex the build is (at least to me). A couple of things jump out as "difficult":
I have a CNC mill. It prefers to only cut aluminum, but I can probably make it work. However, I'd like to learn how to do this on a manual mill (or on the lathe).
I could cut out most of the material with the bandsaw. Once the material is removed in the center of the diameter, I could then bore it on the lathe? Or on the mill? I don't have a boring head for the mill yet, but I think could adapt a lathe boring bar with a HSS bit.
Any suggestions?
Nice drawings. But no tolerances on dimensions which seems like a really poor idea.
I'm making some progress, but I was surprised how complex the build is (at least to me). A couple of things jump out as "difficult":
- There's a pin that needs three sections turned. The outer parts are easy, just turn to the right diameter. But the inner section is not concentric with the outer sections (i.e., the inner section is eccentric). I've purchased twoER40 collet blocks (one square, one hex) and I think I can chuck the hex block in a 3-jaw chuck with a spacer.....or the square block in a 4-jaw for the eccentric machining.
- There's a hole drilled down thru a flat piece that is only about 60% over the work piece. The other ~40% extends beyond the edge. The diameter of the hole is 5/8" (15.9mm). In the picture, it's the hole at the top that is only center drilled.
I have a CNC mill. It prefers to only cut aluminum, but I can probably make it work. However, I'd like to learn how to do this on a manual mill (or on the lathe).
I could cut out most of the material with the bandsaw. Once the material is removed in the center of the diameter, I could then bore it on the lathe? Or on the mill? I don't have a boring head for the mill yet, but I think could adapt a lathe boring bar with a HSS bit.
Any suggestions?