Latest Responses

By stovall

November 18, 2018, 1:16 am

Feeds and speeds for countersinks

Would it be possible to add a calculator for feeds and speeds to use for both hss and carbide single, and multiple flutes of countersinks for a given diameter? The company I work for defaults to 250 rpm at a feedrate of 2.5 ipm for all countersinks and I am sure the smaller diameters can go considerably faster and the larger ones probably need to go slower. It also depends on how deep the overall cut is going like chamfering for a tap is no where near as strenuous as going full depth for an 82 or 90 degree flat head bolt. Maybe it could also include a depth Calc as well? How do you go about figuring this manually? I appreciate any help you can give me!


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Eldar Gerfanov

November 19, 2018, 5:18 pm


I have not added regular countersink tool because i always felt that the regular drill does good enough job.
Please see the screenshot.

The only drawback is it does not account for flat (on the tip of the tool) diameter

But i will see about adding a dedicated countersink tool too.

Thank you.


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