How does the thickness of the slingshot arm affect the rubber band?

If the arm diameter is 6MM and 7MM, then make do with more than 8 mm. The service life of the rubber band will be shortened by 65,438+05%, but it is no problem if the bow eye is oiled by 400.500 rounds every 65,438+000 rounds. If you draw the bow and fire with unbalanced sides, one side of the rubber band will always hit the bow eye, so if you can't hit 100 rounds, you must change the rubber band. Beginners must practice the first stage.