05-03-2013, 04:09 AM
I have used both electric and gas demo hammers (smaller jackhammers) and jack hammers....
The main idea is to get the chisel point in a position to fracture/flake (flaking being easier to control size/shape... if that is the goal)
The REASON I have gotten the joy of this, is that DH has hurt his back each time, both in using & moving... You MUST keep your knees as the lifting lever...no way your back can do it...these puppies are heavy & moving...so you need to be able to keep an optimal stance even as the machine would like to move out on you.... and the whole time it is vibrating....so your hands & forearms will have a buzz....
If you are not sure...go to HD & check what lifting & moving it (not working ) is like...image moving it over the terrain, aiming that point at the offending lava...then image it trying to slide out sideways...If you feel that you can control, USING THOSE KNEES...& the cost is enough savings....and your wife agrees to be the backup if you trash yourself....then go for it...
The main idea is to get the chisel point in a position to fracture/flake (flaking being easier to control size/shape... if that is the goal)
The REASON I have gotten the joy of this, is that DH has hurt his back each time, both in using & moving... You MUST keep your knees as the lifting lever...no way your back can do it...these puppies are heavy & moving...so you need to be able to keep an optimal stance even as the machine would like to move out on you.... and the whole time it is vibrating....so your hands & forearms will have a buzz....
If you are not sure...go to HD & check what lifting & moving it (not working ) is like...image moving it over the terrain, aiming that point at the offending lava...then image it trying to slide out sideways...If you feel that you can control, USING THOSE KNEES...& the cost is enough savings....and your wife agrees to be the backup if you trash yourself....then go for it...