The force you need to apply is just enough to induce micro-tears in your penis tissue. Fortunately, this is way less than 3 lbs. of force. In fact, the micro-tears are safely generated by applying small to moderate force for long periods of time. Applying a small force for long periods of time (4-6 hours a day), is the correct way to create the micro-tears and go about penis stretching. It’s also the best way to ensure safety and prevent injury.
A penis enlargement procedure may be indicated for a man who has experienced penile trauma or has a medical disorder that affects the function of the penis. In cases where penis size affects fertility or quality of life, penis enlargement may be considered under the direction of a urologist. These include surgical procedures known as penile augmentation (a.k.a. augmentation phalloplasty).
Do a little Jelquing, or try Male Extra (more information available HERE) in order to get extra blood flowing to your organ. This is optional, but will help speed up the process. The key to most muscle and tissue recovery/growth is making sure the cells are getting oxygenated and receive the proper nutrients. Blood carries all of that to the tissue, so the more, the better.
The side effects of lengthening surgeries are numerous and include infections, nerve damage, reduced sensitivity, and difficulty getting an erection. Perhaps most disturbing, scarring can leave you with a penis that's shorter than what you started with. Widening the penis is even more controversial. Side effects can be unsightly -- a lumpy, bumpy, uneven penis.