Boynton-Butterfly for Weaklings
Posted: Fri Sep 24, 2010 3:22 pm
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This pole slingshot is based on a 3/4" diameter steel tube and a copper fork made with 1/2 fittings.
A piece of plywood was drilled at an angle and sandpaper was attached to the inner ID for friction.
The plywood handle slides easily to the rear for drawing and holds back the rubber for ease of aiming.
I can draw butterfly easily with it and could not do as well without it.
It shoots 80 grain marbles at just under 250 fps.
This pole slingshot is based on a 3/4" diameter steel tube and a copper fork made with 1/2 fittings.
A piece of plywood was drilled at an angle and sandpaper was attached to the inner ID for friction.
The plywood handle slides easily to the rear for drawing and holds back the rubber for ease of aiming.
I can draw butterfly easily with it and could not do as well without it.
It shoots 80 grain marbles at just under 250 fps.