That is the right kind of tape, though mine's clear and not blue (thank goodness). It produces stronger and more permanent belt joins than those silver splicing tabs.
If enough people order maybe they'll keep it in stock. There must be millions of TT owners with quiet, low-cogging motors who want to try this. ;-)
Mothra once posted that he could find video splicing tape if anyone had trouble. You might try contacting him.
1" wide tape is best but you must cut and tape by hand, not in a splicing block. Fortunately, that produces better results, at least IME. Just takes a little practice.
I work on a small sheet of glass, which makes a great surface for keeping the mylar aligned and flat and for cutting clean lines. My other tools include a steel straightedge, Post-It notes (for holding the mylar in position) and a #11 Xacto blade. Myopic eyesight and a light touch are a big help too!
It's best to cut on a 30-45 degree angle and then apply the tape at the same angle, ACROSS the belt. Burnish the tape down well with a thumbnail and trim the excess. Voila! A belt that should last for years.
