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If you are into Dremel rotary tools perhaps you could make a suggestion. Dremel and knock-off brands use same bits, but different threading and diameter of the collet chucks. Fairly cheap adjustable chucks for Dremel are readily available, but these do not fit any of the many knock-off brands I have tried. Can anyone suggest either a line of cheap Dremel rotary tool knock-offs that use the same chuck threading as Dremel, or in the alternative, a source of cheap adjustable chucks with threading for alternative tools.

Thanks!

Not sure what you mean #1. My dremel tool came with both a larger and smaller (ID) chuck, you simply tighten it down with the nut over it till it has compressed against the bit so it can use differing bit diameters.

Surely there are lots of generic demels designed the same way, including multiple chucks so there is no need to find one cross-compatible.

What alternative tools or bits did you need to use that the typical 2 or 3 included chuck inserts won't cover?

#2, you are speaking of the standard collet-style chucks. I am speaking of adjustable chucks, similar to standard electric drills. These replace the series of collet adapters and tightening nut and provide a real chuck that can be tightened by hand (or pliers) rather than with a key. These can be had in generic mfgr for under $5 for the Dremel, but I have never seen any for the knock-offs. The adjustable chucks probably do not tighten quite as well as the collet style, but are convenient and usually suffice. Here is a link to an $11 real Dremel brand example: http://www.amainhobbies.com/product_info.php/cPath/89_1056/products_id/33477/n/Dremel-Multipro-Fully-Adjustable-Drill-Bit-Chuck

Ok, but I'm not understanding why you need one. At worst you could break down and buy the real dremel tool.

And I could eat all my meals at Morton's, I suppose. Since you so specifically ask, dave_c, I believe that I do have a real Dremel rotary tool in my home woodshop, home PC shop, and home stained glass shop. That's how I am familiar with the adjustable chucks at all. However, I also leave some cheap tool kits at a few jobsites where I unexpectedly need a tool only rarely; not only do these go missing once in a while, small parts such as collets go missing even more often. I do more software work than hardware and do not normally carry around a tool kit.

Uhh, I meant why is it so important to have an adjustable chuck? Most possible bits that wouldn't fit in the standard chucks either need more torque than a dremel tool can muster or are not rated for that high an RPM, aren't detail oriented so a cordless drill would suffice.