Anybody buildinding Boxes with Double top technology?.

There are people who swear by Double top technology. Stronger, lighter with better frequency response. 

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nut slotting file

I got a cheapie set on E bay. Before that I made my own by flapper wheeling hack saw blades to the desired thickness. I should mention they were fine toothed blades and I cut them in half. I still use them to rough out a nut or saddle. Chuck

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