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Spring back dimple dies/fuel tank dimple dies

TerryWighs

Well Known Member
I recently received the 3/32 " fuel tank dimple dies that I ordered. Question is that they seem to look exactly like what is called a spring-back dimple die that I had bought a while back....Are these really the same species, or is the difference difficult to visually see???
 
I can't tell mine apart by looking (they're only about .007" deeper), but if I place a rivet in the dimple I can see the diffence in the height of the rivet head vs. a normal dimple.
 
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