Sorry I don’t quite understan what you mean , when you say tread are you talking about the wheel portion that rides on the rail or the flange that catches the rail head inside edge?If you have fought with a steam engine that continually derails at turnouts, try this. I have found that the wheels of the lead truck are sometimes flat across the tread. When they come to the points the outer edge of the tread is still resting on the main rails and they fail to follow the diverging route.
Using a Dremel, grind the tread so that it tapers toward the outer end. This will ensure that the weight is carried by the diverging route rails.
Agreed 100% it is a degreasant and dispersant. It will act as a temporary lubricant but will eat/melt out any grease and will dry out leaving next to none. It is amazing how many people spray it on bike chains, skateboard bearings or anything that moves thinking it is an easy quick replacement for oil or grease. Perfect for cleaning your old rusty cruddy chain but you must oil it after lolWD-40 is not a lubricant it is a coating and a cleaner, when used on moving parts it acts as a cutting oil and will cause premature wear on moving parts it will also chase moisture so can be used to clean electrical connections...
I would just elevate the throwbar with a shim of thin plastic. If this happens on my handlaid turnouts, I soften the solder and lift the point slightly.If you have fought with a steam engine that continually derails at turnouts, try this. I have found that the wheels of the lead truck are sometimes flat across the tread. When they come to the points the outer edge of the tread is still resting on the main rails and they fail to follow the diverging route.
Using a Dremel, grind the tread so that it tapers toward the outer end. This will ensure that the weight is carried by the diverging route rails.
Like it. I was thinking of 3D printing some tags. Here we do not get a lot of bread with the tag-things, mostly twist-ems...I use bread tabs to identify wires running under a table.
On homemade timer and signal boards I use craft paint on the terminals. Red is positive green is common, yellow is AC for input which is always on the right. On a relay connection it could the LED color.