Re: Setting a rivet into a tight spot
Those recesses are intended for flat-head (or maybe pan-head) machine screws.. I can see the problem you'd be having.
I suspect you're going to want to use the screws and the tefgel.. should be easier if you ever need to remove/change things down the road too....
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"