I'd have to agree with the others Don, and I have to admire your skills in the design and build field. Surely though this is simply a case of trying to beat the manufacturers at their own game. It has to be said however that it appears to me to be a totally impractical piece of kit, efficient though it may be at actually pressing the shutter. Does it not get in the way of the front control wheel, and as for quickly fitting it on the camera, it wouldn't win any prizes for speed
I think I'd sooner stick to my cheapo copy release from China as Andy mentioned. They are freely available on Ebay
