I have made a couple of purchases from RDG: quality tooling that I haven’t found elsewhere, reasonable shipping and they were quick to help when the Postal Service (UK or USPS, don’t know) damaged a package and an arbor slipped out.
The only high-end ER40 Mt collet chucks I could find are MT3 or MT4; here’s another seller of your “cheap” one ($23.25) from CTC, with TIR noted:thank you @GrifterGuru, @ChazzC, for your recommendation. I looked at the only MT2 ER40 that they offer, and it is the same cheap as the one on Amazon; neither of them indicates the TIR value, and I am not sure whether I should even bother. What do you think? Alternatively, I can buy another set of collets in size ER32 and get the Accusize MT2 ER32 collet holder. This way, I’ll have ER40 for holding the material and ER32 for holding tools, but that option will cost significantly more.
The CTC, similarly priced as the Amazon is 0.0006” vs. 0.0004” for the one on eBay (I doubt you’ll notice the difference).@ChazzC thank you so much! Somehow it seems to me that it is the same as the others that don't indicate their TIR, but at double the price
I wonder why the one on Amazon for $27 is rated 3.6 stars with 5 ratings but no comment. Maybe I should give it a try and see it for myself...