Knurling wheels (for the Hemingway Sensitive Knurling Tool)

[Mike DonnerstagParticipant @mikedonnerstag]

I recently made the Hemingway Sensitive Knurling Tool, which is designed around knurling wheels that are 5/8" diameter and 3/16" thick with a 1/4" bore.

I picked up a pair of Jones & Shipman diagonal-knurl wheels from eBay recently, which I had assumed would give me a diamond pattern knurl. Unfortunately it was only after receiving them that I realised that both of the wheels were diagonal in the same direction, resulting in a knurl that simply looks like a multi-start thread!

My question are as follows:

Q: Would anyone need or want a knurl like this on a part?

Q: Can I obtain a single Jones & Shipman knurl of the opposite direction? If so, can anyone suggest a supplier?

Many thanks,

Mike

[Mike DonnerstagParticipant @mikedonnerstag]

[Michael GilliganParticipant @michaelgilligan61133]

Mike,

Diagonal knurl can be useful … if, for example, you want to produce a knurled nut that is easier to loosen than it is to tighten.

MichaelG.

.

P.S. … They don't appear to be J&S … but:

https://www.zoro.co.uk/shop/cutting-tools/knurls/high-speed-steel-knurls-to-suit-two-knurl-holder-1-2inch-x-7-8inch-x-6-1-2inch/f/46222

Edited By Michael Gilligan on 28/08/2019 15:36:38

[RainbowsParticipant @rainbows]

I might be misunderstanding the situation but will reversing one wheel in the holder cause the direction to flip and you will get your diamond?

[Mike DonnerstagParticipant @mikedonnerstag]

It’s a good idea, but a 45deg diagonal rotated 180deg is still (the equivalent of) a 45deg diagonal.

It’s like looking at the following upside down:

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[BazParticipant @baz89810]

Why not purchase the correct knurling wheels from Hemmingway, just checked and they are still advertised and cost less than twenty quid the pair

[lfoggyParticipant @lfoggy]

I purchased several sets of knurling wheels for my Hemingway tool from Zoro.co.uk. These are excellent quality. I now have fine. medium, coarse diamond knurls and fine straight knurls. The tool struggles with the coarse knurls on steels but is OK on brass and aluminum. The fine and medium cut well on steel. I seem to recall that Hemingway were only selling fine knurls, at least when I purchased my kit a few years ago.

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