Don't mix steel and aluminium. They are too far apart on the electro-
chemical scale and will set up an electrolytic cell that will corode
the repair. Use aluminium or Monel-metal rivets and aluminium
brackets, gussets etc.

Note that UH says Cherry-Max - these are not cheapo pop-rivets !

It's not an airplane - just use standard steel rivets, and put in few
more than you would need with the Cherry-max. They are in a place that's
easy to inspect. If you need strong rivets, the steel 5/32" are really
strong - and cheap (at least in the USA).

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly