I can’t seem to find an answer from searching forum posts.
I am using the ER20 collets that came with my spindle, they’re good enough, but the other day I realized that I don’t have any spare collets, which is bad. I was about to order another random $15 set of ER20 collets, but figured I could use this opportunity to purchase a few higher-quality/lower-runout ones, instead of a set of average ones.
- So at one end of the spectrum there are the $1-a-piece things
- At the other end of the spectrum, there are the “Ultra-precsion” collets from PreciseBits , $40 a piece
Do you guys have a recommendation for a good “in-between” choice ?
I really only need one 1/4" and one 1/8", which covers 95% of what I do. Right now I’m leaning towards buying those two sizes only, from PreciseBits UP series. But the shipping cost to Europe will probably make me think twice.