Tom,

If you really want to try rivets you could get some rivet tape then use a small diameter brass tubing in a soldering iron to simulate rivets. A true 1/4 scale rivet would be pretty small. I know on my 1/5th scale Ryan SC the factory used 3/16" rivets so a true scale rivet would be .0375 or just slightly more than 1/32". A 1/4th scale 3/16" rivet would be .046875 or 3/64". So how close to scale are a lot of the rivets we see in R/C today? Most of your modern private aircraft like Cessna and Piper use 1/8" rivets according to an old A/P I know.