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For light duty work, it is handy to be able to drop a drill chuck into an electric screwdriver. By repurposing a spare drill chuck plus machining a spare hex bit, I made the desired tool in just a few minutes.
If you are interested, please see
https://rick.sparber.org/HexDriveChuck.pdf
Your comments are welcome. All of us are smarter than any one of us.
Thanks,
Rick
I have two chucks of that style, coincidentally both set up as mondo pin vises. Also, somewhere along the line I picked up another chuck of that style that already had a 1/4" hex on the screw used to close the jaws (like what you made).
It occurred to me that that latter chuck could be used in my electric screwdriver but, so far, I haven't encountered a job where that would seem to make sense. I have a very large collection of 1/4" hex bits so maybe that's why I can't find a reason to use something that requires the chuck.
Could you please offer some examples of work you might do that requires a chuck in the screwdriver?
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Thanks rgsparber! We've added your Hex Drive Chuck to our Machining category,
as well as to your builder page: rgsparber's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-hex-drive-chuck"> <img src="/uploads/232126/homemade-hex-drive-chuck.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-hex-drive-chuck">Hex Drive Chuck</a> <span> by <a href="https://www.homemadetools.net/builder/rgsparber">rgsparber</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/chuck'>chuck</a> </div> </div> </div> </div>
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I have one major use - to drive my hand crank coffee burr when it is set for espresso.Quote:
Originally Posted by mklotz
Rick
Thanks for the response.Quote:
Originally Posted by rgsparber
The high torque, low speed characteristics of the screwdriver have numerous applications. I've already used mine to drive a scissor auto jack...
https://www.homemadetools.net/forum/...0416#post72449
but that could be done without the need for a chuck.
Some other possible uses for the chuck version...
Slowly rotate parts while spray painting them.
Wire twisting.
Rotate a fishing line drier. (Drying lines after use helps prevent rot.)
I've tried to use it to quickly open or close a C clamp but the cross bar would not cooperate. I need some way to force it to stay in the center while I spin it.Quote:
Originally Posted by mklotz
Rick
Rick,
Unless all your photos are flipped left to right, they show a LH thread. That would be wrong for a normal chuck spinning clockwise (from the driving end). So is there something special with this type of chuck that allows or maybe insists on a LH thread?
Tony,Quote:
Originally Posted by tonyfoale
No LH threads, just flipped pictures to make them fit better.
Rick
Rick,Quote:
Originally Posted by rgsparber
If one pic was like it I would have just assumed that it was flipped and not asked, but as all the pix showed LH I wondered if there was some magic in those chucks. Anyway you have satisfied my curiousity as well as restored my belief in the correct order of the universe.
I wonder if something like this would work...Quote:
Originally Posted by rgsparber
Imagine a cylindrical metal disk attached to a 1/4" hex shank. At locations zero and 180 degrees this disk has pairs of rubber fingers pointing up perpendicular to the plane of the disk.
In use the rubber fingers slip over the C-clamp cross bar preventing it from sliding from side to side. The fingers are stiff enough to transmit the rotary motion of the screwdriver to the C-clamp screw.
On reflection, replace the disk and fingers with a hockey puck that has a diametrical V-groove to engage the cross bar and a central hole large enough to "swallow" the enlarged clamp screw end through which the cross bar passes. That would be simpler to fabricate and you seem to have a large supply of pucks.
When I worked at a museum we would cut the heads off various diameter pins and spin them in to different substrates to mount objects for display. Some more modern drill chucks didn’t close down small enough for the pins. I have a chuck like this which worked with drill or impact driver for the purpose.Quote:
Originally Posted by mklotz
I can understand using such a chuck in an electric DRILL; in fact, I've done it myself for the same reason - drill chuck won't close down on small drills.Quote:
Originally Posted by thevillageinn
But my question concerned the jobs that required such a chuck in an electric SCREWDRIVER. Screwdrivers are geared down too far to be much use for drilling so what is the use of the chuck?