ok guys so my home gym is finished and here it is. I have a heavy bag, pull up bar, double end bag, shadowboxing mirror, and a exercise machine in my gym. gym size is 12 x 20 ft puzzle mats the bag stand is two 4x4 as support posts, with a 4x6 cross beam. I ended up using a chain wrapped around the beam to hold the bag rather than weakening the wood by drilling an eyebolt through. I didnt like the idea of creating any weak spots in the wood. I wrapped some carpet around the beam to stop the chain from digging into it. and I used two small blocks of wood to keep the chain from sliding all over the place. painted everything to look nice. heres a quick clip of my finished home gym.