Guys have had mixed results from CDCO. I've been very fortunate and only had one "buyer's remorse" case with a set of center line gauges for calipers. The instructions said that the stock diameter was 1/2", so close the jaws with the extenders in place, tighten the set screws on the caliper jaws and zero out the calipers, but add 0.500" to your measurements. The diameter is actually 3/8" . . . The little set screws were total garbage, but other than that they work fine for a $9 tool.
I've bought a 5-C collet chuck and two sets of 5-C round collets (1/64" step set and 1/32" step set), set of 5-C square collets, 2" indicator with a mag back, couple of mag indicator bases, set of TNMT 1/2" lathe turning tools, at least 50 250-201 QCTP tool holders, etc. etc. and haven't had any problems with any of that stuff. I think someone here posted having a problem with a mill X-axis power feed and wasn't treated well by CDCO on the return. Shars is another source of Chinese tooling, I've never had a problem with any of their boring bars, calipers, etc. purchased from them. Lots of options that unfortunately for the hobby machinist on a budget means supporting the Chinese economy instead of our own. I could never justify buying the 50 or so 250-201 tool holders from Aloris at $60 a piece when the CDCO's at $11 work fine. Good luck on your angle project!
Bruce
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