wolftat
Product Reviews Manager
What is the difference between the ER32 and the ER40 collets? Do they do the same thing and which size is the best for turning?
Collet types
- Thread starter wolftat
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wdcav1952
Activities Manager Emeritus
Neil,
As I understand, they are different. As I understand it, most use the ER32 collets. That is what I use and they work great.
As I understand, they are different. As I understand it, most use the ER32 collets. That is what I use and they work great.
Either will do all you want for pen turning. Largest diameter of ER-32 is about 3/4". ER40's can go up to about 1" but don't go as small. ER-32s are a little more popular for pen turners but probably only because many use the Beall system and that's what he offers.
Daniel
Member
The difference that I know of is the size range in the collets. since 1/4 inch is the smallest you want in order to hold a pen mandrel you will just want to make sure the range goes that low. The ER32 set only goes to 1/8 so it would make me wonder if the ER40 gets small enough.
DavidSpavin
Member
The number refers to the outside diameter of the collet in milimeters. Ie ER32 is 32mm in diameter.
JeffinWIS
Member
ER40 is a larger "series". ER32 come in 3/32" to 3/4", ER40 1/8" to 1"
wolftat
Product Reviews Manager
Thanks for the information, now I can finally order a set once I find a place that will give me a good price and ship them in a reasonable amount of time.