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wrnchbndr's photos: Bow-Tie Bridge

This has been the most tuning stable setup that I have found. Its a brass base cut from 1/8" brass alloy 360, a pair of stainless 4-40 allen headed set screws and a compensated bridge carved from 1/4" aluminum. The base has two recess points created from a 3/16" drill bit. The allen screws are sharpened to a 45 degree sharp point and the aluminum bridge is threaded for the allen screws. Gibson used a bridge setup like this on their first year of Les Pauls but they used clear plastic instead of brass for the base. The sting slots are cut into a vee shape with no intent of letting the string slip or slide within the slots.
The comparatively cheap and basic spring trem has no friction pivot or hinge. There is a strip of felt under the spring on the body.
Intonation is correct when the bridge is at just over 90 degrees from the body -- an equal break angle between the trem and the nut. Although the bridge will fall off without the strings and it can fall over if you don't pay attention during a restring, it is not at all a liability or a problem.
Once you set the intonation correctly, the brass bass it secured to the body with two pickguard screws and never needs to be relocated unless you do a radical change of the type of strings you use.
On this guitar, the headstock is a Ric style 3X3 but the offset and headstock angle of the D and the G-string is far less than that of a Gibson.