ideas for using regular 1/4 inch knobs with D-shaft rotary?

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ruairioflaherty

Well-known member
Joined
Jul 6, 2005
Messages
2,422
Location
Los Angeles
Hey guys,

I've found the perfect knob for a project I am building (surplus) and it is a regular 1/4 knob with a screw to tighten it to the shaft. I've also sourced some grayhill rotaries that are ideal for the task but they are D-shaft.

Please excuse my ignorance if this is a dumb question but is there an easy way around this? Is there such a thing as an adapter (I imagine a semi-circular half shaft)?

thanks,
Ruairi
 
I guess it depends on the screw(s) being long enough to make it. If they were too short I guess I could find replacements. I found really sweet knobs and a pretty good deal on some Grayhill rotary switches so I hope I can make it work.

I'll post a link for the knobs once I'm sure I have mine,

thanks,
Ruairi
 
Thanks guys. As Keef says no Home Depot but we do have screws! My Dad was a toolmaker for 40 years specialising in custom taps, dies and all things threaded. I figure I'll just buy any cool grayhills and funky knobs I see on ebay and let him figure it all out :green:

cheers,
Ruairi
 
To clarify things...

Set screws are such a common hardware item, even Home Depot sells them...

:oops:
 
If a setscrew as I suggested is of sufficient length, fabricating a shim shouldn't be necessary. :wink:
 

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