Blowgun modification
Blowgun Modification refers to the modification of a blowgun to increase flow.
There are 4 possible procedures; often, all 4 are carried out. Listed in order of difficulty.
1) Nozzle removal:
The nozzle is the small piece on the front of the blowgun, which serves to focus the blast of air, frequently made of brass or rubber. It also happens to reduce flow.
Most of the time, it can be removed by simply unscrewing it.
2) Removing slack in the mechanism:
Most blowguns use a lever to push down on the piston, and typically, this lever cannot depress the piston enough to allow full flow.
Easily remedied by sticking a spacer between the top of the piston and the lever.
3) Enlarging the holes:
The inlet hole to the piston slide tube is typically smaller than it can be, and this (clearly) limits flow.
The solution is to grind or drill this hole to a larger size. The piston should be removed first, to prevent damage to it. (see diagram)
4) Reducing the diameter of the piston:
The standard piston's diameter is too big to allow full flow around the piston.
Remedied by removing the piston, and reducing its diameter where the step exists currently. Be careful not to damage the O-ring. (see diagram)
