Footboard rivits - rivet tool?

[NCriding]

Can anyone show me what a properly splayed foot-board rivet looks like and the tool to finish it? The rivets themselves are not like anything I've seen before, sort of like the tail of a dragon-fly. Thanks for your help!
DSC02663.jpg

[1950Panhead]

Those are split rivets, similar to what harley used, start with a small chisel, then a large chisel, then pliers to flatten.

[NCriding]

Thanks, I'll sharpen a couple of chisels and give it a go!

[MMasa]

Dull might be better.

[exeric]

Like Mark, and 50pan said, a real dull chisel. You just want to splay the split rivet enough so you can use a drift to flatten out the tines, or fingers, or ears, or. . . whatever they're called. You don't need to use a lot of force on the rivet as that will pucker your footboard mat. . . . And you dang sure don't want a puckered mat

[Rooster]

If you look closely at how it was originally done, or especially if you've removed some original rivets, you see that the tails of the split rivet are actually rolled back onto themselves somewhat- if that makes sense. They're not simply split and widened and laid down flat.
I try to envision a tool that would force the tails to roll that way, but still working it out in my mind. I'm sure everyone uses a screwdriver and/or a chisel, because after all, no-one is going to look under your footboards, right? Right?
Still, I'd like to come up with a way to achieve that 'curled under' look of the rivet tails when finished. I'll be doing my own footboards coming up in a few months.
I can see Eric's method working well, perhaps if the drift is concave on the business end. Yep, I can see that...

[WebKahuna]

If you look closely at how it was originally done, or especially if you've removed some original rivets, you see that the tails of the split rivet are actually rolled back onto themselves somewhat- if that makes sense. They're not simply split and widened and laid down flat.
I try to envision a tool that would force the tails to roll that way, but still working it out in my mind. I'm sure everyone uses a screwdriver and/or a chisel, because after all, no-one is going to look under your footboards, right? Right?
Still, I'd like to come up with a way to achieve that 'curled under' look of the rivet tails when finished. I'll be doing my own footboards coming up in a few months.
I can see Eric's method working well, perhaps if the drift is concave on the business end. Yep, I can see that...

Does this look like what you mean

http://mgaguru.com/mgtech/tools/ts216.htm

[MMasa]

Looks easy enough to make.

[Rubone]

I've had one for years made out of a piece of oil hardening drill rod. My sister is a jeweler and I used to help her make lots of stamping tools with drill rod and old valve stems so used a bunch of it to make specialty punches for myself.

[exeric]

Thanks Rooster, and WebKahuna. I have to do the riveting on a pair of footboard soon and I'll make that tool. Again, THANKS.

[Rooster]

Does this look like what you mean
http://mgaguru.com/mgtech/tools/ts216.htm

Yep, you nailed it. Thanks for the link and the photos.