I hate to use the term "billet" because it isn't, but it is hewn from solid bar stock - so close enough. Like most billet parts, it's taking an OEM $15 part and making a $75 part out of it
. But it's fun as well.
Anyway, here's the CB550 OEM battery box in all it's glory:
Rusty and nasty as you like. Time to make it look a bit better!
I started by cutting 3 blanks for the bottom and sides, then squared them up and milled them to the proper width:
Then drilled the holes for the rubber grommets / bumpers to fit in;
Milled the taper on one end and we have a completed bottom section;