Finishing the Hemingway Sensitive Knurling Tool - Part 6

Today we're finishing up the Hemingway Sensitive Knurler kit. I've had my eye on this knurling tool ever since I first got my lathe, and now I'm finally building it. This is one of the classic British toolmaking kits, and building from someone else's design will be a new experience for me. Today, we're finally putting it all together and using it for the first time.

Tools used in this video:
*This site contains affiliate links for which I may be compensated

Licensed under Creative Commons: By Attribution 3.0 License

00:00 Intro
00:27 Turning the lever boss
04:17 Drilling and reaming the lever boss
06:43 Assembly
11:54 Turning the lever knob
14:34 Knurling the lever knob
18:32 Making the screw cap
22:39 Fitting the tommy bar
25:41 Thoughts on the final tool
28:07 Wrap

[gregfeneis]

4:20 Recommend using that spring on those parallels. No pressure, though

[Trainwreck]

I said this on the Inheritance Machining channel as well... I think it would be really cool to see you guys plus Blondiehacks and Artisan Makes all do the same project and link to each other's builds. Your individual styles are so cool to see!

[markmcdonald]

I built the kit, my screw hardware was too long. The tool works great, thanks for sharing your build.

[jwest]

The spring to keep the parallels in place, what a creative idea

[outsidescrewball]

Great build along with the video production/discussion

[craigguinn]

Hi James, just got the kit this week. Todays project is penciling in decimal dimensions on the drawing for the DRO, with correct XY offsets. I have very similar tooling, so your approach was very helpful.

[HexenzirkelZuluhed]

Thank you for sharing! Interesting comparing your build to Inheritance Machining. But in the end both came out beautiful.

[dubwars]

I have 0.1% of your talent, but just enjoy watching perfection. Well done!

[YouveBeenCabadged]

We've had trouble ordering screws in bulk this last year, and had to switch to a different type just to get stock. So maybe that's why you got long ones.

[Preso]

I wondered about the 10 thou discrepancy between the arm thickness and the spacer block. It seems overly generous to allow for free movement. I made it to spec but there is always the option to tighten up the clearance. Nice looking build!

[barrycaudle]

The way we used to close up holes a tad, for instance dowel holes or holes for punches in a punch plate. Place a hardened ball larger than the hole at its end, brass drift on top of the ball, good clout with a hammer. Repeat at other end if required. This tightens the hole at its end or ends.

[christianstark]

My screws were long as well. I am considering drilling out the threaded side plate on mine to pass the long screws through, and then threading the mounting block instead, instead of using the M5 screws to mount it to the side plate. The mounting block would hold the entire assembly together instead of just being a block to mount in a tool holder.

[AmateurRedneckWorkshop]

That is a very nice knurling tool and you can be proud of your work. I won't go into the Tom Lipton method of calculating the size to be knurled but I always get a good knurl following that. Thanks for the video keep on keeping on.

[gerritvisser]

The Dorian Knurling catalog (Section H) has a lot of useful info and calculations for both form and cut knurling. For appearance I usually glass bead blast, gets rid of/hides a lot of marks.

[chevytrucknick]

Great job with the build! I personally really enjoy the long builds, so much more details and techniques are conveyed which helps with my learning of the trade. I watched some other channels of the same build where they build it in one or two videos and so much of the process is lost and which makes it quite boring. So thanks for putting so much more effort into it. The only thing was I wanted to see some knurling on different diameters of stock.

[Steviegtr]

Hi Clough. I found all the screws supplied fit ok. Not sure why yours did not. I have used the tool a lot lately on some other Hemingway projects & can confirm that it it is a very nice piece of kit.
Regards.
Steve.

[gbspikyfish]

Re 26:25 ; I've got an original Marlco knurler. I can just about get an 8 thou (0.2mm) feeler gauge between the top arm and the side of the body, so your 10 thou gap does look to be about "right" vs an original.

[midwestkustomz]

Hi James, another great video! I've been subscribed since I started my channel over a year ago and love watching your videos! I'm definitely gonna build me one of these or maybe even make my own. We'll see, either way love your content keep up the great work!

[fladder]

Great video as always, really loved this series.
And remember: laziness leads to creativity and is therefore the engine of progress!

[joselrodriguez]

Loved this build! I enjoy your 3D printing and CAD videos but I most enjoy your machining videos as you are very gifted.