…Cho has been working on this project for a while and has gone through quite a prototypes. The latest Vincy Compound Bow Mark 3 is the best and fully functional. The Vincy Compound Bow Mark 3 is an improved version of Mark 2. The Mark 2 has a draw weight (the force required to hold the string stationary at full draw) of 6kg. According to the laws of Hong Kong, crossbows with draw weight of more than 6 kg are defined as arms. So all Cho’s previous designs has draw weight of no more than 6 kg. “But with draw weight of 6 kg, you can only shoot a chopstick about 6 meters,” says Cho.
Somehow he decided to power up the version 3 by adding extra fibraglass. The Vincy Compound Bow Mark 3 uses 4X 30/6/600 fiberglass and also features 3D printed drop-away arrow rest and adjustable cable tension device. he draw weight of the Vincy Compound Bow Mark 3 is 13kg, which can shoot things from 10 meters away.
…Cho calls himself a prototype maker. His previous projects include all kinds of home made hi-tech and low-tech stuff, such as 3D printed airsoft pistol shotgun, rail gun, ETG (Electrothermal Gun), crossblow, and the 3D printed compound bow….
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