Online Knurling Calculator

[PJs]

Thanks Paul. I saw your really Nice Scissor tool for that post. Been considering making a scissor type with a rack & pinion adjustment to control the side torque issue. Several out there (Dorian, etc.) but Very Pricey for my budget.

Absolutely important to stay as close to the chuck as possible and or support with the tail stock or steady, depending on the sequence of ops. Would love some feedback from You on the spreadsheet once you try it. Thanks again! ~PJ

[PJs]

Great share! As you've experienced, producing good knurls is not an easy thing to do. Developing and sharing this tool will benefit a lot of people.

Thanks DIYer!! It is/was my hope to help others get through the rocky terrain and all the nuances of knurling. Forums like this are a wealth and helped me a lot! Least I could do was pay it forward.

[jere]

I am just learning basics on my benchtop lathe so I will be looking forward for a chance to put this to use. It looks like this will save me quite a headache too, much thanks!

[PJs]

Thanks, my pleasure to help if I can, Jere. Hopefully it will help, but still takes practice and setup is important. Get some scraps to practice with. You can start with with some 1" and keep trying and turning it down till it gets "good" and Easy.

[kbalch]

Hi PJ,

Nice work on an extremely useful piece of software! Your Knurling Calculator is the 'Tool of the Week'!

You'll be receiving one of our official HomemadeTools.net T-shirts:

Just let me have (via PM) your details (size, color choice, and mailing address) and we'll get things processed directly.

Congrats!

Ken

[kbalch]

This thread has been moved to the Must Read subforum. Congrats (and thanks) to PJ for making such a valuable contribution!

[PJs]

Oh My! Thank you Ken! I am honored to be of service in such a Great community of wonderful, creative minds...and to be Awarded like this, is a Golden achievement to me! I'll PM you the info and wear it with Pride!!

Thanks to All for the responses, support and requests for this tool. Cheers to all and to "Good" Knurls for every one!

[rgsparber]

You can find a sample of knurling a taper at http://rick.sparber.org/knu.pdf. Sorry, but diameter is not a critical parameter. Rick

[Paul Jones]

Rick,
This is an interesting experiment with your scissor-like knurling tool. I use an import scissor-type knurling tool that looks identical to the Eagle Rock Technologies version. I have made several modifications and improvements to the import version and use formulas similar to those published here by PJs. I can consistently produce accurate and clean knurls in all types of steels, stainless steels and aluminum but still have the problems with brass because of brass particles clogging the knurl wheels. Ironically, the best way for me to knurl brass is by hand turning the chuck and hand advancing the carriage while washing away the brass particles. I also learned the hard way to never use an acid brush to apply the lubrication oils when knurling under power. Sooner or later the brush gets sucked into the knurling wheels and ruins your work. Use a pump oiler for lubrication.
Thank you for your article "Knurling, Version 2",
Paul

[rgsparber]

Paul,

I have limited experience with brass, but would chalking the wheels help prevent the particles from sticking?

Rick