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Gallery, Projects and General => Gallery => Topic started by: Rik Shaw on March 01, 2014, 01:41:56 PM

Title: Calliper knurling tool
Post by: Rik Shaw on March 01, 2014, 01:41:56 PM
This is my take on a calliper knurling tool. I made it from bits in my scrap box. The adjuster arms I made from a stainless steel cupboard handle for instance. The only things I never made on it are the small patterned knurling wheels which were manufactured by QUICK and the three screws holding down the keep plate (although I did dress and polish the heads on the screws). This version of a knurling tool is based on a design which was originally manufactured by a company called MARLCO and is considered to be the Rolls Royce of knurling tools.

For a small lathe - mine is a WARCO WM250 VF - this is a hefty tool at nearly 7" long and weighing one kilo but it  cuts the mustard big time. I have included a photo of a knurl that the tool formed on a steel bar.

Rik
Title: Re: Calliper knurling tool
Post by: NeoTech on March 01, 2014, 02:00:59 PM
This is probably one of the easiest constructions ive seen on these clamp knurling tools.. brilliant.! =)
Title: Re: Calliper knurling tool
Post by: BaronJ on March 01, 2014, 02:08:20 PM
Hi Rik,
Nice work !  Looks good with very clean lines.
Your photos should have something in there to give an idea of size.  Those knurls look tiny.

Title: Re: Calliper knurling tool
Post by: ieezitin on March 02, 2014, 08:18:15 AM
Rik

I absolutely agree with Neotech that's a sleek design. i just completed one myself otherwise i would build this one myself.

Thanks for showing it.

Anthony
Title: Re: Calliper knurling tool
Post by: Henning on March 06, 2014, 03:03:14 PM
How's that for a first post  :thumbup:

Great work! Any drawings for this? It looks slightly more wellbuilt than the original Marlco one which I saw one time. (The knurling wheels were between two plates on that IIRC)
Title: Re: Calliper knurling tool
Post by: Rik Shaw on March 06, 2014, 03:31:12 PM
Hello Henning
I based my version on an article and drawings by Graham Meek in  "Engineering in Miniature" volume 35 - No.5 published in UK November 2013.

Rik
Title: Re: Calliper knurling tool
Post by: Arbalist on March 07, 2014, 05:41:47 AM
The Far East one I bought was very wobbly in use so I decided something more solid was needed.

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1714.jpg)

Not my design, just copied from others I'd seen.
Title: Re: Calliper knurling tool
Post by: BaronJ on March 08, 2014, 11:41:51 AM
Arbalist,  Your knurling tool puts my effort to shame.
I've marked mine for "Must try harder !"



Title: Re: Calliper knurling tool
Post by: Arbalist on March 08, 2014, 11:48:35 AM
Thanks, main thing is it works well enough. I would prefer to go to cut knurling but it's a bit pricey for something I don't need to do very often!
Title: Re: Calliper knurling tool
Post by: ksor on March 08, 2014, 12:03:52 PM
Take a look at my Little program for helping find the "right" diameter for the piece you'r knurling:

There is NO vira in the MSI-file ! :med: :med:
Title: Re: Calliper knurling tool
Post by: BaronJ on March 09, 2014, 02:14:26 PM
Take a look at my Little program for helping find the "right" diameter for the piece you'r knurling:

There is NO vira in the MSI-file ! :med: :med:


Those eyes are scary.  :zap:


PS. No windows here.  :bugeye:



Title: Re: Calliper knurling tool
Post by: Arbalist on March 09, 2014, 02:36:06 PM


PS. No windows here.  :bugeye:

Me too, I only use OSX or IOS.  :coffee:
Title: Re: Calliper knurling tool
Post by: ksor on March 09, 2014, 03:46:42 PM
Sorry - I can only make programs for Windows  :beer:

Title: Re: Calliper knurling tool
Post by: BaronJ on March 10, 2014, 06:08:34 PM
Sorry - I can only make programs for Windows  :beer:


Don't be !  I have a BSc in computer science and a PG Dip Software Engineering.  I can't program to save my life...  :hammer:
Those eyes are still scary.  :palm: [size=78%] [/size]
[/size]
[/size]
Title: Re: Calliper knurling tool
Post by: Rik Shaw on March 11, 2014, 05:44:23 AM
Scary eyes? More like MAD I'd say. Alfred E. Neuman may have aged but it looks like he is still alive and kicking :-)

Rik
Title: Re: Calliper knurling tool
Post by: ksor on March 11, 2014, 05:59:42 AM
Scary eyes? More like MAD I'd say. Alfred E. Neuman may have aged but it looks like he is still alive and kicking :-)

Rik

I too Wonder ... what "Scary eyes"  :scratch: :scratch:
Title: Re: Calliper knurling tool
Post by: BaronJ on March 11, 2014, 08:32:57 AM
Scary eyes? More like MAD I'd say. Alfred E. Neuman may have aged but it looks like he is still alive and kicking :-)

Rik

I too Wonder ... what "Scary eyes"  :scratch: :scratch:


The ones at the top of your opening web page...

Title: Re: Calliper knurling tool
Post by: ksor on March 11, 2014, 08:46:46 AM
Scary eyes? More like MAD I'd say. Alfred E. Neuman may have aged but it looks like he is still alive and kicking :-)

Rik

I too Wonder ... what "Scary eyes"  :scratch: :scratch:


The ones at the top of your opening web page...


Ha, ha ... I think the nose is much more scary ... and the holes in it ... imaging if you should give "First Aid" by "mouth thru nose"-method ... THAT would be scary, I think !

OK, I just ME peeking into YOUR home while you'r peeking on my web site  :smart: :smart:

Title: Re: Calliper knurling tool
Post by: BaronJ on March 11, 2014, 05:34:05 PM
Ok !  I promise not to look next time.  :beer:



Title: Re: Calliper knurling tool
Post by: stig on March 11, 2014, 07:21:28 PM
Mind if I ask a silly question?

Last time I did knurling was at school (quite a while back) I now wish to create a straight knurl pattern and have a clamp type holder similar in style to the ones above. When creating a diamond pattern its necessary to have a pair of opposite wheels to create the diamond.

Whats required for the straight knurl, 2 of the same or a pattern wheel and a blank/plain dummy wheel for the opposing side?
Title: Re: Calliper knurling tool
Post by: Arbalist on March 12, 2014, 06:01:17 AM
Two straight ones will do it.
Title: Re: Calliper knurling tool
Post by: RussellT on March 12, 2014, 06:35:33 AM
Two straight ones will do a diamond pattern as well if you mount the tool at 45 degrees.

Russell
Title: Re: Calliper knurling tool
Post by: stig on March 12, 2014, 03:04:33 PM
Thanks gents, much appreciated. OP sorry for the hijack
Title: Re: Calliper knurling tool
Post by: Xldevil on March 12, 2014, 08:15:20 PM
The Far East one I bought was very wobbly in use so I decided something more solid was needed.

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1714.jpg)

Not my design, just copied from others I'd seen.

Hello.
That reminds me of the tool I' ve build.

(http://up.picr.de/17634734yo.jpg)


(http://up.picr.de/17634736fz.jpg)


(http://up.picr.de/17634737yj.jpg)


Stock and drawings came from Hemingwaykits.

Cheers,Ralph



Title: Re: Calliper knurling tool
Post by: Arbalist on March 13, 2014, 12:56:29 AM
Nice job Ralph!
Title: Re: Calliper knurling tool
Post by: Xldevil on March 13, 2014, 02:57:27 AM
Thank You,the same compliment goes to You.
Cheers,Ralph
Title: Re: Calliper knurling tool
Post by: Jo on March 13, 2014, 03:12:02 AM
Hello.
That reminds me of the tool I' ve build.
(http://up.picr.de/17634737yj.jpg)

Stock and drawings came from Hemingwaykits.

Cheers,Ralph

Nice tool Ralph.

The Hemmingway design is based on the excellent Marlco knurling tool. The one thing that it misses from the original design is the cam for fine adjustment of the top knurl. It is a very simple modification the fixed pivot on the upper arm is replaced with the cam and the pivot extended to allow a handle to be attached. Such a simple addition but the effect :drool:

Jo
Title: Re: Calliper knurling tool
Post by: Xldevil on March 13, 2014, 03:27:03 AM
Hello,Jo.
Thank You for Your nice words and Your hint.
Hemingway is offering a fine feed,actually they call it sensitive,knurling tool as well.

(http://up.picr.de/17635409pt.jpg)
So far,I didn't missed a fine feed for the tasks I did.
If I will,I probably modify it in the way You suggested.
Cheers,Ralph
Title: Re: Calliper knurling tool
Post by: Arbalist on March 13, 2014, 06:13:02 AM
That second Hemmingway Knurling tool looks interesting Ralph doesn't it. From the Hemmingway site:

"This item became a standard in the toolroom; allowing operators to feel the knurl being generated and adjust the pressure to both arms using fine feed lever"

Mine works fine but that's no excuse not to build another one in the near future!  :beer:

Vic.

PS, I noted that Hemmingway supply English made Knurls. Anyone bought these, are they noticeably better than those commonly available?
Title: Re: Calliper knurling tool
Post by: Xldevil on March 13, 2014, 11:26:42 PM
Along with the knurling tool kit,I bought two sets of knurls from Hemingway.
Don't know if they are better than others,but I'm pretty satisfied with my knurling.
Anyway,who likes to buy far east,if one can get European made?
(http://up.picr.de/17643812zs.jpg)

Title: Re: Calliper knurling tool
Post by: billmac on March 28, 2014, 08:12:22 AM
This is my version of the Marlco/Hemingway knurler with sensitive feed.
(http://i122.photobucket.com/albums/o248/moorbrook1860/knurler.jpg) (http://s122.photobucket.com/user/moorbrook1860/media/knurler.jpg.html)
It works very well indeed and is not hard to make.
Title: Re: Calliper knurling tool
Post by: awemawson on March 28, 2014, 08:32:36 AM
Certainly looks the business  :thumbup:

Superb finish  :bow:
Title: Re: Calliper knurling tool
Post by: ksor on March 28, 2014, 08:52:55 AM
Wav, looks really nice  :bow:

 :beer:
Title: Re: Calliper knurling tool
Post by: Arbalist on March 28, 2014, 09:40:34 AM
 Nice work billmac!
Title: Re: Calliper knurling tool
Post by: Red Dog on October 25, 2017, 11:21:17 PM
  Just priced the Hemmingway kit (sensitive knurler) not going to fork out over a $150 AU  just to get the material,I'll make a copy on this one
Title: Re: Calliper knurling tool
Post by: rotorhead on December 27, 2018, 07:12:17 PM
That looks a very functional piece of mechanical art, well done and thanks for sharing.
Title: Re: Calliper knurling tool
Post by: Spurry on December 28, 2018, 09:16:52 AM
Neat idea to cut away the tool holder like that. Might have to do that with mine.  :clap:
Pete