Machinist question about picatinny cutter?

[igolfat8]

Where would one purchase a bit to cut a female picatinny slot?

 

[survivor45]

Any tool supply shop will have end mills.
There may even me a local shop in your area.

https://www.mscdirect.com/browse/Milling?mscNew=true&navid=2106224

 

[igolfat8]

Thanks for the link to MSC machine tools. I know it takes an end mil but I am looking for a link to the specific end mill that I need to order. I assume there is one made in the precise shape and profile of the female picatinny slot?

 

[Ricochet]

if you can set it up on 45 degrees, you can use a standard square bottom endmill.

 

[Ricochet]

or if ya want to hold it flat in a vice...

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

 

[igolfat8]

Bingo, yes, that is the one I was looking for. Thanks Ricochet.

 

[HogKiller]

You are going to have to fudge a little with a 13/64" in end mill .203, slot width is suppose to be .206, tolerance is huge, +- 008 but I'd err on the side of zero'

 

[AirShot]

Look for a cutter grinding shop, they can make/ modify a cutter to suit your needs. Was a master cutter grinder for 30 years, long retired now, but we made all kinds of special cutters for special needs.

 

[JohnTaylor]

You are going to have to fudge a little with a 13/64" in end mill .203, slot width is suppose to be .206, tolerance is huge, +- 008 but I'd err on the side of zero'

You are going to have to fudge a little with a 13/64" in end mill .203, slot width is suppose to be .206, tolerance is huge, +- 008 but I'd err on the side of zero'

If you use a collet, put a piece of paper on one side… the minor eccentricity should achieve your dimensional goal. John

 

[HogKiller]

If you use a collet, put a piece of paper on one side… the minor eccentricity should achieve your dimensional goal. John

Turn the thing into a fly cutter. In a previous life I made things sharp and then others round and stacked concentric, they spun up to 40k rpm.