DA vs ER collets for milling?

To be more precise, if I'm going to use inch collets to hold metric
shank end mills, which would offer better grip and least runout?
I'm thinking ER, but I have a mess of DA collets...
Or, settle for an import set of metric R8 collets?
Jon
Reply to
janders
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Whichever ones cost more most likely.
Reply to
Bob La Londe
ER for heavy side milling. DA for lite milling.
ER 25 series seems to cover most stuff, short of 3/4. ER 32 for 3/4+ I have one ER45 for 1" shanks, altho I'm thinking ER32 can go to 1". If so, WTF did I get an ER45??? LOL
Metric or inch shouldn't matter, as each collet should overlap the next by some small amount. Funny, tho, I have trouble fitting some tap sizes, like 8, 10-32.... whazzup wit DAT?????
Reply to
Existential Angst
Suggest buy the proper size collet in whatever holder holder series that has the heaviest stiffness and mass
danielbauen.com/make/index.php/download_file/105/114/
Reply to
PrecisionmachinisT

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