Wow! Apparently some folks don't read the whole post or don't understand the english language. Go back and read the post and you will find that I was praising the hydrapress and called it a bargain at $170. However, I wanted to build my own and modify the design to my bow's specifications. I have the tools and ability to undertake a project like this and I enjoy these type of projects. Last time I checked, there were at least 3 different websites selling this type of press, so I'm pretty sure that there are no patent issues.