Drill a 3/32 hole in a piece of metal that is as thick as the length you want, poke the rivit in the hole and cold chisel off the bit you don’t want.

I have one of those vice mounted cutters and very good they are too. I cannot remember where from but will look it up and post photo.

For more than a few rivets I make a small split sleeve in the shape of a tophat. That is used to hold the rivet in a collet on the repetition lathe and the rivet can then be faced/parted to length.

There are handy calculators for the length of rivet required, but it depends upon the exact snaps used, commercial or homemade, and is reasonably critical (within 5 or so thou) if a properly formed head is required.

Andrew

Bernard Towers said:-

 

Images as promised, the std length when cut is 1/8″ so spacers/washers are used to make longer.

It is an Arrand rivet cutter.  The owner retired many years ago and wound up the company.  I managed to buy one from his remaining stock shortly after.   It’s  a  real time saver

Gordon