Questions for the gods of epoxy and fiberglass

[Steve Shannon]

2) What do you mean by "push pins?"

Push pins are also known as “removable rivets”.

 

[DeltaVee]

Push pins are also known as “removable rivets”.

How many push pins would you recommend using on a 4.5" diameter fiberglass tube? 4? 6? I'm currently using 4 on a 3.1 inch cardboard tube... nowhere near as massive as FG. I'd think more might be called for...