Can't help with the plans, but I can offer perspective on what it's like to have a bow press explode in your lap. Let's just say that I'm lucky to have all my fingers and not be singing alto......

That being said, for the 40 bucks a Bowmaster costs, I don't think you can go wrong. I've broken down short ATA bows with up to 70lb limbs without problems. It's not the fastest press, but for "do-it-your-selfers" a few extra moments usually isn't an issue.

Just me two cents......

Fritz