I'm so tickled every time I use this at how well it works, I thought I'd share it.
I basically wanted a way the size bindings (to width) accurately, consistantly, safely and without loss via kerf. The jig I came up with is easy to make & use.
The components are a hardwood block glued to ply ("the bed") and clamped to a bench, a "free" block, a #2 X-ACTO blade, shims & clamps.
Attachment:
slitter1.jpg
You hold the binding against the bed block and slide shims of equal thickness up to it.
Attachment:
slitter2.jpg
Then put the free block over the shims & binding. It will hold down the binding & its left face establishes the location for the slit.
Attachment:
slitter3.jpg
Clamp the blade to the free block so it just touches the binding.
Attachment:
slitter4.jpg
Pull the binding out & check the blade scratch for proper location (& move free block if needed). Then, feeding from the back, the sequence is simple
PULL THROUGH
FLIP
END FOR END (to keep scores vertically alligned - THE KEY!)
PULL THROUGH (scoring the opposite side)
restart the binding & TAP THE BLADE (for a little more depth of score)
REPEAT
At some point, the scores will meet in the middle & the binding will seperate.
Attachment:
slitter5.jpg
You can do a 3-pc slit by doing the above BUT the rotate 180 deg SIDEWAYS and repeat BEFORE tapping the blade (ie 2 pairs of scores)
Attachment:
slitter6.jpg
The jig works for solid or laminated ABS and for wood (although wood takes more "taps"). This is .300" wide curly maple slit to .200" & .100"