View Full Version : Setscrews Used by Shopsmith
mickyd
09-21-2009, 05:57 PM
Is nylock the proper terminology for what I have been referring to as nail polish?
Nylok is actually a registered trademark brand name of a manufacture that provides nylon patch (sprayed on nylon) and pellet (machined cavity in the fastener and inserted) products. http://www.nylok.com/
The other major competitor is ND Industries. http://www.ndindustries.com/
The generic name is nylon patch or pellet.
JPG40504
09-21-2009, 06:02 PM
Is nylock the proper terminology for what I have been referring to as nail polish?
Think Frigidaire Dusty! I did misspell nylok! Nail polish = nylon patch.
dusty
09-21-2009, 06:12 PM
Think Frigidaire Dusty! I did misspell nylok! Nail polish = nylon patch.
This technology looks great. However, it doesn't look like anything I have seen in any of the Shopsmith items I have worked on.
The Nylok website causes me to believe the product is BLUE and it appears to be engineered into the fastener not dabbed on (like nail polish).
JPG40504
09-21-2009, 07:07 PM
This technology looks great. However, it doesn't look like anything I have seen in any of the Shopsmith items I have worked on.
The Nylok website causes me to believe the product is BLUE and it appears to be engineered into the fastener not dabbed on (like nail polish).
The original nylok was the 'plug' type. A hole in the side of the threads held a nylon 'plug' which protruded to about the od of the threads. What we are seing on the ss hardware is a 'cost reduced' replacement and is a 'blob' stuck onto the threads in one spot. The color can vary. I do not know if the color means anything. There are sealing type screws which are like a coating over most of the thread. The home page for ND shows that type.
In any event, the ss screws with the blob/patch/nail polish are intended to prevent the screw from coming loose when unintended. They require considerable extra torque to install them and remove them(the first time anyway).
mickyd
09-21-2009, 10:33 PM
This technology looks great. However, it doesn't look like anything I have seen in any of the Shopsmith items I have worked on.
Here's a pic of my Greenie's original miter gage set screw (top) which had a gray nylon patch and the current ShopSmith replacement part which is a red Nyloc patch set screw. Nyloc doesn't even advertise this "cheapy" red patch on it's website yet it's commercially available.
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The Nylok website causes me to believe the product is BLUE and it appears to be engineered into the fastener not dabbed on (like nail polish).
The way the nylon is applied to the fastener is the fastener goes through induction heating (induction heating = heating with electricity) and once heated, powdered nylon is sprayed on. The nylon melts on contact with the fastener and bonds to the surface.
dicksterp
09-21-2009, 10:36 PM
Very possibly the "nail polish" is Vibra-tite. This is a liquid that is brushed on and dries but stays soft. The screw can be removed and replaced a number of times with no ill effects.
It is safe to use around polycarbonate while loctite 222 and 242 will attack the plastic.
dusty
09-22-2009, 05:55 AM
Thank you very much, all of you. It now seems that the nail polish is not nail polish at all and never has been.
All of my set screws look much like the new ones in Mike's photo.
dusty
09-22-2009, 06:27 AM
The new process for setscrews may not be new at all but the ones I just received are done with a different color substance and it does appear to be applied as a secondary process.
The red one is one that I received long ago with a hand full of others.
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