Strength training weight stack pin with an additional ring, photo 1 by Don Tai
his is a strength training machine weight stack pin from a city gym that needed some alterations. I enlarged the hole on the handle to add a ring. The steel of the ring was from a garage door spring, so is high strength steel. I then bent the ring to allow the pin head to be threaded, bent the ring back into alignment, and then welded it shut. I used SMAW 6013 at 40 amps, but should have used 70amps.
The ring is 1/4″ 6mm thick and is not easily bent. I cut the garage door spring lengthwise, resulting in many rings, but they are slightly twisted. These then need to be bent into alignment. My welding is a work in progress, meaning I need a lot of improvement. Welding rings is interesting because you cannot get an angle grinder into the middle of the ring.
Garage door springs act as a counterweight and help to open the heavy garage door. They occasionally break and need to be replaced. This discarded metal can be reused and made into rings.
The weight stack pin is quite old and well beaten up. There is no cable to attach to the machine. This is unfortunate as it could easily get “lost”. Maintenance is required.
Strength training machine weight stack pin with an additional ring, photo 1 by Don Tai
Strength training machine weight stack pin with an additional ring, photo 2 by Don Tai
