Its often discussed how one makes a good, lasting and powerfull set of flats. Most of us know that light pull bands can be very fast, ammo weight considered; thicker bands shoot heavy ammo faster than thin at same dimensions ie tb blue vs gold. that tapered cuts don't last like straights etc etc..
These things aside I have a few things I always do when cutting a flat rig, as do others I'm sure..so here's a few tips Id like to share, and please give any other ideas if you have any.
1. Always ensure your rotary cutter is Sharp, free of any knicks possibly from contacting a metal ruler when guiding. As knicks in the blade convert to knicks in the bands, that turn into tears in the bands quickly.
2. In relation to the above, I would recommend a aluminium ruler as opposed to steel, preferably with soft rounded edges, to lessen the chance of ruler to blade contact.
3. When making the cut, ensure the cutter is as verticle as possible, as any angle will effectively chamfer or bevel the bands, making the extreme edge of the bands thinner than the bands themself, making them tear much faster. Hope that makes sense..
4. If you cut your own pouches too, use a separate blade.
5. I definetly recommend pouch end tying with the wrap tuck method..and that said, tied off with a lighter or thinner rubber than the bands themself. Ie tb gold bands, tb blue ties..this keeps weight down, and I find less abrasive on the bands.. I cut the tie rubber at 30mm x 5mm, 4 wraps then tuck then 2 wraps, pull through with a saliver dampened string.
Have the bands moderate stretched before commencing this process, and at this moderate stretch, the pouch holes should be similar size.
6. When cutting from a fresh roll of ie tb gold, I take close to 1mm off they're edges, both sides as I've noticed they're factory cutter leaves them infamous knicks mentioned above..
7. Forks must be very smooth, especially when ott tying.. and the first wrap of the ties not too tight..as with pouch end.
8. The heavier the taper, if done, the faster pouch end will wear. Ie: A 25mm fork to 10mm pouch rig will wear at the pouch faster than 10mm straight as the taper stresses the thinner part faster.
9. Try extending your draw.. ie 6 inch bands will usually last a lot less than 9inch, yet speed can be similar but life increased as the bands have the distance to accelerate, with out hard stretching the rubber.
10. Match your ammo wisely to the bands, very light ammo with over powered bands rob life.
I hope this helps some, and please feel free to add to this if I've forgotten anything.