I purchased from CDCO and so far have been very pleased with the performance. I placed a 1/2" ground arbor to check runout and it was extremely accurate. Ive only used about eight of them so far and all thread in/out smoothly. It also helps that the 5C scroll chuck (lathe master tru-set) is a decent quality. I purchased it from Mark Jacobs (mksj) when he upgraded to a Bison. Like many things out of Asia, luck of the draw and I must have got lucky with the 64 piece set. It only set me back $200.
I've posted this before but worth doing it again. The indicator was hardly flickering 1/2 a needle width under power.
Static photo.
Spending $200 on the set allowed me to invest in other tooling so a no brainer for me.
The rack I was working on yesterday (80 hole) will live in the kneeling drawer for easy identification and out of the way when not needed.
The lathe/mill tooling cart build has been a long overdue, but still have a lot of work to complete.
Alan H showed a side by side of a Chinese and Japanese collet. The Chinese collet has a tiny shoulder allowing it to rest/seat nicely in the rack bore. The collets remain seated at 25º with the kneelingdrawer opened.
The CDCO collets also have internal threads that support a back gauge for multi piece run.
I Understand quality guys, I have more quality tools and machines than not, but sometimes it just makes sense to buy less expensive items if they perform. If I come across a collet that doesn't work I'll let you know but so far they're batting 1000.
Paco