Online Knurling Calculator

[KD7IIA]

Great Job. This is a very productive idea for using a spreadsheet program. Most spreadsheet programs have formula creation capability for producing numerical results, however some require a great deal of experience using the various programs.
Your idea is a good model of what can be achieved.
Again Good Job.

[PJs]

Great Job. This is a very productive idea for using a spreadsheet program. Most spreadsheet programs have formula creation capability for producing numerical results, however some require a great deal of experience using the various programs.
Your idea is a good model of what can be achieved.
Again Good Job.

Thank you Kindly KD7IIA! This is not much more than a lookup table but works well, for something I had a hard time with. I build them all the time for all kinds of things, sometimes using VBA to clean them up...but simple, easy to use is good in my book.

Thanks again for your kind comment! ~PJ

[Okapi]

Hi,
I've read with interest the discussion about this calculation formula, which is mathematically a right way, but I want just to give an idea for people who make knurling on small parts especially with steel we call "silver steel", it's steel which can be hardened by heating.
With a perfectly cleaned system, if you can find Mica powder(small flakes in reality), a silicate, used with something like WD40 it gives a result similar as the graphite powder, the particles "cut" by the wheels doesn't stay on the work and you have a cleaner appearance with as is my feeling less effort on the lathe, it's important to put the WD40 or similar on the work when turning in good quantity, the mica stay on the wheels and they are cleaner as with oil when finished.
It's not really about the subject, but can eventually help somebody.
Have a nice day.
Pierre

[Paul Jones]

Hi Pierre,

Your suggestion for using mica powder is something I would lie to try. Where is mica powder sold.

I do a lot of knurling and almost always have perfect results with all types of steels but I hate knurling in brass. Brass has too many fine flakes and I have to use a Noga Cool Mist system with lots of coolant to overcome the mess brass produces. On steels I only have to use my lathe way oil with pump oilier (use a lubrication type-oil and not a cutting oil for knurling) and a small brass brush to clean the top knurl in a scissor knurler to get consistent results. Never use a brush for applying lubrication because no matter how careful you are, sooner or later the brush bristles will get caught in the knurling wheels and the whole brush will be sucked in (I know from experience). By the way, I used to calculate by hand for the knurl diameter specs but now use the Android phone app "Knurling Calculator" but it only calculates for Imperial specifications.

Regards,

Paul

[Okapi]

Hi Paul,
As I know, actually the powdered mica is used as a component in lubrication grease for special use, mine was given in a large amount by a friend working in chemicals, I use it economically but when nothing goes it makes miracles as a dry lubricant, graphite powder goes too but is not so easy to clean after using it.
It functions in my opinion because chips cannot stay glued with the dry system then with normal lubrication they glue to the asperities and give a bad appearance.
Have you make some proofs with lubricant like WD40 in a pressure air steam like on a band saw ?
Have a nice day.
Pierre