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DOT (Push/Pull) spinners released!
KevSteele:
--- Quote from: OSCAR on May 08, 2003, 08:37:13 pm ---
What kind of set screws are used on Christian's knobs? The end-style, I mean. Cup, Cone, Flat, etc?
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They are cone-shaped tips. Pointy, basically. :)
I haven't looked closely at the set screws on the Oscar knobs -- what type do you use?
Kevin
OSCAR:
--- Quote from: kevsteele on May 08, 2003, 09:34:05 pm ---
--- Quote from: OSCAR on May 08, 2003, 08:37:13 pm ---
What kind of set screws are used on Christian's knobs? The end-style, I mean. Cup, Cone, Flat, etc?
--- End quote ---
They are cone-shaped tips. Pointy, basically. :)
I haven't looked closely at the set screws on the Oscar knobs -- what type do you use?
Kevin
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Here is the answer from an experienced mechanical engineer....
Cone point set screws are supposed to dimple the shaft. If the correct shaft material is used, the part the cone point set screw is holding on will be very difficult to remove (which is how I guessed what kind of set screw was used). That it is the reason for using them because they are only intended for permanent setting. Using a cone point set screw, and then having to use a case hardened shaft to offset the dimple effect is counter-productive and why I said that the wrong set screw was probably used. I certainly am not trying to put a bad light on Christian's product, this is a very easy thing to mess up. Many of the engineers that work for me have done the same thing simply because they didn't realize that the wrong combination can cause this to happen. I also certainly don't look down on Christian for using this type of set screw, it is such a minor detail that it is nothing to get upset about....
This is also a very easy fix. Any local hardware store or Home Depot will carry a cup point set screw which would be preferred for this type of application. I'm not sure what size set screw Christian's knobs uses, but a cup point replacement should be readily available.
I use cup points on my spinner knobs.