This is a picture of my completed “Sensitive Knurling Tool” built from the Hemmingway kit/plans. All parts (Except knurling wheels and screws) were machined manually and hand filed/finished.
Main body, milled, drilled and corner rounds filed.
Drilling symmetric rounds on arms
Drilling hole located partially on the part using sacrificial block
Reaming
Setup on rotary table to rough machine curves on arm components
Rough grinding rounds on belt sander
Finished using hand file and sane paper
Adapted drill press to spindle sander for finishing internal radii
Laser cut angle jig to locate arm component in vise.
Deep slot for knurling wheel milled
Some parts ready for test assembly.
Fitting cap and lever onto eccentric shaft
Quick split collar clamping fixture to hold part in lathe for second operation
Course adjust screw and assembly
I found that when adjusted to its larger settings, the feed adjuster side plates would often touch the side plates in the circled area. This caused the assembly to bind.
I fixed this by taking a little bit more material off the step on the inside of the side plates.
All the parts ready for assembly.
Here’s a link to a short video of me assembling the tool.
Here’s the first test knurls. I have a set of fine straight and fine diamond wheels.
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Jeremy Young Design 
the adapted drill press sander is clever!
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