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It is a common misconception that run-out is less of an issue when working with wood. About a year ago I talked a good customer of mine, that cuts mostly balsa and aircraft plywood, into buying a...

[QUOTE=bergerud;199277]Someone should buy one of those, cut it off and give it a test. There does not, however, seem to be flats on these things for the second wrench.
QUOTE]

I already have...

[QUOTE=Jeff_Birt;199251]
They will be 'super stubby' ER 11 collet chucks, about 1.4" long (not including closing nut) with wrench flats just above the nut closing threads. With ER11 collets you use...

I had contacted the manufacturer of the USA made ER11 stubby collet chucks again a few weeks ago to find out about getting some made up to fit the CarveTight (or 1/2" Rock) chuck. Their design guy...

The nut is about the same size on the USA made unit I have as imports I got a hold of. The threaded end in the USA unit is actually shorter. The nut has to be stout to resist flexing when it is being...

Here is the one I have been using. It is a 1/2" shank stubby ER11 collet chuck. About 1.25" of the tail end was turned down so it fits all the way up in the CT chuck. This preserves the left hand...

I'm not sure I follow you here. On mine I just turned down the tail end so it sit up in the recess on the CT. (the CT spindle necks down to around 3/8" up inside. That is not really needed though as...

The problem is that when turning down the shank you can't ensure that your staying inline with the tapered bore of the adapter. It does not take much difference to create a problem. I think you have...

The one I used was made by Craftsman Industries. You can find them at Enco and MSC Direct on sale in the $60 range at times. They like to charge about $100 when not on sale.

I've been doing this for a few yeas now, glad to see others trying it. I modified a US made 1/2" shank collet chuck to work with the Quick Change chuck about four years ago. The run-out was so bad...