Cup shaped insulating washers

I use a hollow gasket punch set to cut my own. The screw will shape the cup in the gasket material. I don't know of any good source for ready made insulating washers, but these homemade ones work fine.
 
just plain bill said:
Do you use any particular material?
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Sometimes I can find some thin flexible dense insulating material at the electronic surplus store. If not, then I use some dense thin gasket material from Fleet-Farm or auto parts stores. Remember the brush needs an insulator in each side of the motor frame. That is 4 pieces total for one horn.
 
It's been a while since I've been into a horn, but if I recall correctly I think a plastic antifreeze or oil bottle would provide a lifetime supply of material for these insulators.

Joe
 
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