Which color Thread lock on a unifence?

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Forum topic by ScottKaye posted 12-15-2014 12:23 AM 870 views 0 times favorited 6 replies Add to Favorites Watch
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643 posts in 1953 days

12-15-2014 12:23 AM

The Large set screw on my Delta Unifence wont stay locked in place after setting the fence to the miter slot. After making a few adjustments of the fence during use, it starts to lose it accuracy in the order of 6-7 thousands or more and requires me to stop what I’m doing to resquare the fence. It seems that one of the large set screws is backing out from repeated clamping and unclamping operations. Do I want to use a low (purple), med (blue) or Hi (red) strength thread lock? I’m thinking that once the set screws are thread locked, it should solve my problem and I wont require frequent fence calibration.


-- "Nothing happens until you build it"

6 replies so far

View Mark Kornell's profile

Mark Kornell

1169 posts in 2531 days

#1 posted 12-15-2014 01:47 AM

You probably want the low strength stuff. You just want to stop it from backing out, not permanently lock it in place.

-- Mark Kornell, Kornell Wood Design

View MrUnix's profile


6716 posts in 2199 days

#2 posted 12-15-2014 02:20 AM

Try using a drop of clear nail polish on the threads for testing.. if it does the trick, you can use the blue threadlock to make it more permanent yet still removable in the future if needed.


-- Brad in FL - In Dog I trust... everything else is questionable

View jshroyer's profile


80 posts in 1659 days

#3 posted 12-15-2014 02:23 AM


Yellow = tooth paste
Red = 1 and done.


View TheFridge's profile


9483 posts in 1486 days

#4 posted 12-15-2014 02:30 AM

Purple or blue. Low strength.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View Grandpa's profile


3259 posts in 2676 days

#5 posted 12-15-2014 04:10 AM

Medium strength is Blue and that is the one to use. It is used on rifle scopes etc. and it can be removed later. It you find removal too difficult you simply heat the screw with a solder gun and remove the screw while hot.

View jmartel's profile


7898 posts in 2150 days

#6 posted 12-15-2014 03:49 PM

I use Blue on basically everything, except for a few critical nuts/bolts on the motorcycle. I’d go with blue.

-- The quality of one's woodworking is directly related to the amount of flannel worn.

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