I use a ShopBot in a maker space, and the shared collets are fairly chewed up. I want to invest in some of my own, but I'm having trouble differentiating between them. Is there anything to look for in a "good" collet? For starters, I want an ER25 for 1/4" shanks.
Here are some that I found:
- TECHNIKS 1/4" SUPER PRECISION ER25 COLLET .0002 ACCURACY CNC CHUCK MILL
- Amana CNC High Precision Spring Collets for ER25 Tool Holder
- HHIP 3900-5215 ER-25 Spring Collet, 1/4"
- Dorian Tool ER25 Alloy Steel Ultra Precision Collet, 0.236" - 0.276" Hole Size
There is also one for sale on the ShopBot website, but it's about twice as expensive as the others. Suggestions welcome!