Future RV 9 Flyer
Active Member
I started to dimple my fuel tank skins and them I heard about Clevelands fuel tank dimpling dies.Are they needed or are the regular 3/32 dies ok?
I believe the "tank dies" are intended to be used for the under structure, (to make a slightly deeper dimple). Then use the 3/32 die for the skin. The theory is this allows room for some sealant to get trapped in between the skin and the understructure.
Clear as proseal?
One potential problem is that if the skin dimples are not placed directly over substructure dimples prior to riveting, the cleckos will still go through and look right but the rivet may "tip" slightly when set. This will result in one edge of the manfactured head's edge protruding slightly leaving a sharp edge you can feel with you finger. I'm not sure if this was caused by using the tank dies or having proseal involved or both.
Bevan
The "tank dies" are to be used for dimpling the SKIN to allow room for a thin layer of sealant between the rivet and skin.
Thanks for the clarity.