Penis pumps are easier to use, have much less risk of injury at reasonable pressures and times, and produce significantly better results in my experience.
I’ve used an extender, I think pretty much everyone has because they’re cheap and the hypothesis behind them makes sense, but I didn’t get any results from them. Using an extender at high tension actually shortens my erect length for a few days.
A good penis pump is about $40 and you can buy an aquarium pump you can modify for about $20. You can buy a cheap heating pad to wrap around the tube for about $5 if you don’t want to spend time doing warm ups. 20 minutes at 5 inHg every other day seems to produce consistent growth that hasn’t stalled yet. Gaining girth with a penis pump is ridiculously easy and rapid, at least in my experience.
You can make a hanger too. The good thing about hangers is they exert a set amount of force that is known, where as the tension springs in extenders are unknown. I have one extender and one side has a spring that exerts more force than the other and so it always wants to bend side ways. I attribute a fair amount of length gains to a light weight .5 lb. hanger. I put it on under my clothes and forget about it until my penis is sore from being stretched. I’ve been wearing it for 7 hours today already and if my penis wasn’t sore from the stretch I wouldn’t even notice it.
Starting: 7"bplx5.2" 2017 (shrunk from disuse)(originally 8"bplx4.5", gained to 9"bplx6")
Current: 9.0"bplx6.125" 2020
Goal: 11.5"bplx7" 2021.