Modifying a cheap clamp knurler Part 2- Umbau einer Rändelzange Teil 2
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- เผยแพร่เมื่อ 6 ก.พ. 2025
- In this video we will start to modify the clamp knurler in a way that it uses standard sized knurling wheels (20x6x8mm) made by Zeus:
www.zeus-toolin...
Shoptalk #6 where I showed the clamp knurler in its original state:
• Shoptalk #6 / 05-2015
I bought a very cheap knurling tool some years ago. Everything had play in it. Saw your video on how you repaired yours and I used some of those idea’s to fix mine. Just finished it and tried it out. It worked so much better. Thanks for the idea’s. Success!!!
A very nice improvement to a so-so tool to make it a first-class tool. Always a pleasure to see you work.
+Richard Freeze Thank you Richard - I will do some detailwork to it, chamfering/rounding over all the edges and clean up the finish, maybe strip it completely down to bare metal.
That is a handsome boring head Stefan - very nice tool. In fact you have many very nice tools and measuring equipment. Great modifications... and results.
+Shawn Hawkins Thats why Volkswagen messed up in the US ;)
Another great video -- It's nice that you relocated the original holes for the knurl pins. It looked like an "Achilles heel" before modifying it.
Thanks! I just ordered one tonight after finding my late fathers stash of knurling wheels. I will tune it up like you did when I get some time set aside. Thank you sir!
Hi Stefan. Thanks. Very helpful to see how to use the tool. Also it is interesting to see how you overcame the big imperial to smaller metric knurler axis bore problem. This old and ancient newbie would have thought it was a 'show stopper', but not to you! I really like your desire for quality workmanship. 'If a job is worth doing it is worth doing well'. Bob.
really enjoyed the project, not only a great improvement on the tool, but you gave a lot of tips along the way. thanks again for the shows.
Thanks for the vid! i usually power feed the knurl since i tend to get uneven knurls without power feeding. i run the lathe in reverse and use the thread cutting and very slow speed. this way i can knurl away from the spindle and safely run out of the end of the stock to get a complete knurl.
Bravo. I've been mulling over a similar mod for my cheapo clamp knurl. It is beyond my comprehension why they would sell a knurling tool without removable knurls!
Great series, it's a much better tool than before. Just an idea, I kept thinking the pivot point is the one thing that all other parts depend on for alignment, I would have addressed that first but it didn't seem to affect your outcome. Thanks for sharing
Hi Stefan. Bought the same tool myself and basically did the same modifications except i added another, that was to make another nut with a larger numbered ring to dial in the same pressure for any given material to achieve the same results, hope this helps. James
Stefan
Thank you for the specs on that boring head. Found one on e-bay this morning thank You again.
Nice work and a fantastic result!
That boring head looks like a nice piece of kit!
+ian bertenshaw Thank you! It is...realy :)
As always, I learn something from your very good videos....
I always avoided knurling, thought that it involved some kinda witchcraft to get it right. Learning more from TH-cam than I did as an apprentice!
+Flintstone Engineering With those tools it's a big improvement on the bump type tool, just have to get the right diameter... Also works great even on a smaller lathe... ;)
Stefan another great series your work is of the best quality very enjoyable.
Dave
In theory it's like cutting threads, and the pitch of the knurling wheels should match the diameter of the piece you are knurling. But it seems that it is not such a big deal, aaand as long as the wheels sort of fit the diameter, it will all work.
Nice series, thanks as always for posting.
Another informative Video, STEFAN
Getting away from the conventional really makes things easier, if not more practical
Good solutions here to make a better Tool
Thanks for sharing
aRM
I knurled with a 0.05 MM per revolution the normal cutting feed speed i use works pretty good the only problem ist the Floppy knurling tool it knurled a taper on there
Nice rebuild of an average cheap tool, another "kit of parts" assembled as it should have been at the factory.
When using the boring head I usually retract the tool at the same rate as the feed in, at least for the last few cuts. What this does is it takes a spring pass, usually, taking out any tendency for a tapered hole. If you get a spiral when retracting the tool, it clearly hasn't taken out all you meant it to, a slow retract helps.
Nice one. Came out a fine product in the end.
Very good video and excellent machining! I always look forward to your videos!
Nice work, Stefan.
Thank you for sharing.
Very good series. Thank you for sharing...
This was excellent, thank you for sharing your tune-up job. For some reason I just really love a knurled knob or screw, they not only give things a finished look, but as you say provide an inherent safety against over tightening...unless some Bozo uses vice-grips or pliers on the knurl! Now that...that "just makes me sad", I cannot understand when someone does that to a tool or part, and I will always think of this video when I see something butchered in the shop from now on, LOL!
Like Stefan says: "That just makes me sad..." :D
Have a great week, Aloha...Chuck
As usual, very nice work. Since you have the pantograph, I think you should make your own wheels that produce a smiley face knurl, although it might be difficult to make the eyes and mouth line up, It would likely require some changeable gearing for the correct timing of different circumferences, but I'll leave the small finishing touches up to you...
Thanks Stefan, Now I have to add another project to my ever growing project list. :-)
Great project Stefan! I think I'll try to make one of these from scratch.
Very nice tool and well made. Thanks for the video.
+cerberus Thank you.
Very much enjoyed your series. thank you
Stefan. nice job.
Enjoyed...recently bought a cheap knurler ~ Richard
What sort of machine knurls the knurling wheels and and what sort of machine knurls the machine that knurls the knurling wheels??
They are ground after hardening, not knurled.
Awesome Stefan.
I should have waited for your series before purchasing an (Eagle Rock) knurler. I could have saved myself about $250. Nice improvement. I ditto Pierre Beaudry's comments. Perhaps you could mention the manufacturer of the knurling wheels in your video description. I couldn't understand the name from the video. Another nice video! Great improvement.
+Jim Milne I will add it - The manufacturer is "Zeus" take a seat when you look at the price for the wheels, two of them cost as much as the el-cheapo clamp knurler :D
Not sure about the eagle rock tool - It seems to be high quality as seen in Brad Jacobs video and is out of the box just a nice tool. On the cheapo one there was same labour needed...
Hi Stefan, the tool is 200% better than original.....
The main problem with the original seems that both wheels aren't digging the same depth, among other things.
A few things you might want to try next time you use it, better to use some good lubricating oil instead of cutting oil cause you're not cutting the material but forming it... second, you can start applying pressure slowly as it turns at first with no advance, and, then when you get the right depth you advance at about .15 mm per rev in automatic advance, you should be able to make a perfect knurl in one pass only...
Let me know how it turns out... ;)
Pierre
+pierre beaudry Thank you pierre! I will go for autofeed and give other lubricants a try, thats sure.
I still have your knurling-tool video on my to-watch list, but I took a peek in there and it looks like a very nice tool, well built - I will report back when I finaly get around to watch it :)
If you have any questions, you're welcome to ask. ;)
some time ago when you were cleaning with the ultrasonic cleaner you said that after an hour the parts turning black cant you use it for this part?Grusse Chris
Stefan, You really have made a "silk purse from a sow's ear" (American? idiom); a tool that will be a pleasure to use. Do you calculate the work piece diameter/circumference needed to give an even number of 'points' before starting to knurl? Doing so improved my knurling.
Bob
I have found the power feed works good for me buddy
Good job Stefan !!!
+gizzo123us Thank you!
thank you stefan prima
Another great video!
Very informative. Thank you Stefan
Good mods, came out great.
+Randy Richard Thank you Richard!
Would the knurling improve if you had the work piece circumference to the knurl wheel circumference to a divisible ratio ?
Yes, but sometimes a perfect circumference is not an option
Yes, but sometimes a perfect circumference is not an option
Nice job thanks for sharing.
I'd hang on to the old wheels, and maybe built a different style of holder for them, similar to a pipe cutter. I've used a form of knurling to bring shafts or spindles that has been spun back out to a more ideal fit, and those old wheels should be good for something like that. Save your high quality wheels for when it really needs to look good.
Years ago, when I started looking into the procedure of overhauling an engine, one process they pictured was knurling pistons. I assume they did that to expand them in a worn area to bring the fit back into tolerance. Is anyone aware of the use of this process these days? I've never met anyone that did. I guess the ease that is involved in simply buying a new set of pistons these days has sent that step to the archives.
Great video - as always. I'm curious what software you use to edit your videos.
actually it would be kind of cool to design a 'knurling chuck' with wheels in it instead of jaws maybe - a nice way to provide concentric pressure -
Next lathe with feed selector . I will for sure also to lazy to change gears
A video on the Wohlhaupter would be well received I think.
Do you do any diameter/pitch calculations beforehand or just go for it?
Let me know if you take donations towards a replacement for that pitiful oiling stick.. ahem.. "chip brush". ;-)
Hey Stefan, good rework to make yourself a nice tool. Changing gears is not like eating ice cream so maybe is time for a power feed screw on the lathe.....ha ha ha ....just kidding...or not.
My knurling OCD is satisfied. I can sleep tonight.
Hey Stefan, whats your hole gauge in that design called?
Cheers
Troy
Hi Stefan, yes I enjoyed TFS. G :)
What are you doing!!! Sorry TOT made me say it. Excellent vid Stefan TFS "thanks for sharing" G :)
never fear, i enjoyed!!!
+crazymanmichael Never let fear and common sense get in the way of a project :D
You might consider trying way oil instead of cutting oil when knurling, as you're actually forming instead of cutting.
Hi Stefan, Another cheap tool is "BLUEPRINTED", great results, your too critical of your own work. BTW, "loosely tightened by hand,is finger tight.
+Robert Klein Ah! Same as in german ;) Thanks for the compliment :)
I have the same tool. I have another project now.
FYI
Comparison
com-pair-i-son
Nice boring head . Who makes it.
+Fred German Its a Wohlhaupter UPA1 with Mt2 taper.