Single vs double end end mills

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Inspector
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Joined: Mon Feb 23, 2009 4:25 am
Location: Saskatoon, SK, Canada

Re: Single vs double end end mills

Post by Inspector » Fri Feb 07, 2020 10:38 am

I didn't mean to say the won't work in a collet only that the plant I worked in used them in Weldon type holders and should have said without any damage to the end in the holder. It was a CNC plant and practices there would not be the same in home or small businesses running manual machines.

Pete

toddalin
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Location: Orange County, CA
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Re: Single vs double end end mills

Post by toddalin » Mon Feb 10, 2020 2:35 pm

So yesterday I needed an end mill and only the double ended bit was the right size. I looked at the bit and it said 9/16". So I pulled the 9/16" collet, and the bit slid in almost up to the "round" but would go no further.

Then I realized, while the end mill was 9/16", its "round" was 5/8" even though it doesn't appear to say this anywhere. A 5/8" collet, and the bit easily slides up onto the "round" for a firm grip and life is good.

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