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bobbybeef
09-11-2005, 03:18 AM
Any body got a recipe for making knurler wheels. I am making the knurler at littlemachineshops and would like to make wheels with different patterns.
Regards to all,
Bobby

SGW
09-11-2005, 07:55 AM
Staight knurls wouldn't be (too) hard, I don't believe. Set up a blank in an indexing head or on a rotary table, and plane out the teeth with a stationary toolbit, either by racking the table back and forth or with the quill feed. I've done that to make straight-knurled knobs, and it works pretty well. You need to figure out how many lines per inch you want, and how many you therefore need around the diameter blank you're making. Things being what they are it won't come out even, and you may want to adjust things to make the indexing come out to something convenient.

Angled knurls would be a much more difficult proposition, I think. Ideally you'd have a spiral milling setup. You might be able to do it on a lathe by setting up a REALLY fast thread and then (somehow) cutting the equivalent of, say, a 90-start thread....

IOWOLF
09-11-2005, 08:12 AM
Funny you should ask, I just bought a book called "Makeing the small shop profitable".

Among other things it shows several ways to make knurls, even rope and others.

------------------
The tame Wolf !

Your Old Dog
09-11-2005, 08:31 AM
eBay had 4 of those books. Now they got 3 http://bbs.homeshopmachinist.net//biggrin.gif

here's the others if the link works.

[URL=http://search.ebay.com/shop-profitable_W0QQfromZR8QQfsooZ1QQfsopZ1QQssPageName ZRC0024]http://search.ebay.com/shop-profitable_W0QQfromZR8QQfsooZ1QQfsopZ1QQssPageName ZRC0024[/UR L]

Actually, this vendor I bought from (chez-willy) seemed to have more than a few books for the rookie machinist (such as myself).

[This message has been edited by Your Old Dog (edited 09-11-2005).]

Frank Ford
09-11-2005, 10:58 AM
I made a few just for fun, and they work just fine:

http://www.frets.com/FRETSPages/Machining/Projects/RopeKnurl/ropeknurl.html

IOW, Dog - thanks for the reference - II think I'll pick up that book to see how I could have done a better job of it. . .

moldmonkey
09-11-2005, 02:52 PM
Good thread. I've been thinking about making some knurls after rereading this thread from PM. Rivett has all the cool toys.

http://www.practicalmachinist.com/cgi-bin/ubbcgi/ultimatebb.cgi?ubb=get_topic;f=1;t=007412

i was thinking about trying to make some of the beaded knurls.

Frank, thanks for the link to your page. Have tryed your knurl in other materials?

Jon

Yankee1
09-11-2005, 02:54 PM
Hello Frank,
Very nice article with great illustrations.
Chuck

Frank Ford
09-11-2005, 03:16 PM
Lately I've been goofing around with extra light adjustable mandolin bridges, so I made up some 3/8" diameter titanium knurled wheels. Here's a progress shot of that project, with the same rope knurl running in titanium:

http://www.frets.com/MandoCafePix/knurl.jpg

Tin Falcon
09-11-2005, 03:16 PM
Appaenly jewelers use a tool called millgrain beaders that are similar to knurls and come in male and femail version check out
http://shorinternational.com/MillgrainBeader.htm
These are also made in many fancy styles.
i think that is what the set is on moldmonkey's link.

Your Old Dog
09-11-2005, 05:22 PM
Falcon, I have some of the ones jewelers use but they are normally gauged for gold and silver use and on rings and watches. They'd be pretty delicate for a HSM'er

Frank, nest time you do a heat treat do an experiment. Heat two parts up but do the oil quench differantly. An old gunsmith (gunsmiths are always old!) told me to use parafin base 10 weight non-detergent motor oil (Pennsylvania oil) and when you sink the hot part in it shoot for the middle of the 16oz soup can of oil and DON'T swirl the part around in the oil. The oil creates a hot jacket of oil that will self-temper the part. I left my chisels in for about 3 minutes while holding the shank with a pair of pliers before removing them. Bear in mind, the tips of the chisels were on the order of 1/16th inch wide. Your soak would likely be longer. It works very well on the S-5 tool steel that I make my gun engraving chisels from. It might work for you as well and save you the hour soak in the oven.

capperbar
09-12-2005, 03:56 PM
I am looking for concave knurls to copy some old schuetzen sights. Any suggestions for companies that sell the wheels? Making a knurl looks like a fun project, might try it.
TIA Dave

Tin Falcon
09-12-2005, 07:24 PM
would this info help?
http://www.doriantool.com/Knurling/technical_information/knrl_bxv.pdf

bobbybeef
09-13-2005, 08:21 AM
A really good crop of replies. Thank you guys for your efforts.
I have some silver steel of a suitable diameter. Hardened to a straw colour will this be OK for the task in mild steel and brass.
The knurler is a scissors type so it will have pressure moderated to a degree.
grateful guidance on these points.
bobby.
PS I thought that I would use my numbering outfit to give some patterns.
Bobby.

[This message has been edited by bobbybeef (edited 09-13-2005).]