Some time ago I lamented that there was no easy way to produce 1/5"
wide repair tape.  No one leaped up with a solution.  Here's mine.

Scraps of 1 1/4" x 3/16" aluminum bar 2-6" +/- long and 5-3/4" long,
four X-Acto #11 blades, a bit of 1" x 1" long dowel, 1" long spacer,
four 14"-20 x 1-3/4" long cap screws and nuts.  The blades are pinched,
and somewhat located, by two of the cap screws, the tape's dowel spool
is snug within the space made available by the four blades and the
five small bits of aluminum, the spacer keeps the whole shebang from
pinching the tape.

The X-Acto blades are devilishly sharp as any architectural student
making models can attest; you are somewhat protected from them by
their location within the slitter.

Douglas Heckrotte
Philadelphia, Pennsylvania
dheckrotte@gmail.com.geentroep [delete ".geentroep" to reply]