If you are in the situation that you have to get the job done and nobody seems to care about how you do it. You might consider renting a portable torch with 50' lead and purchasing an electrical bit designed for punching out electrical boxes( I dont know the correct name, it looks like a spinning top). The rest is simple blow the hole then ream it out with the spinning top to correct diamensions. This would be a last ditch situation to your problem. Hopefully you can recieve the proper equip. for the job at hand. But I also know how companies are when you ask for special equip. Anyways g/luck and be safe.




Ps if you use the bit method///keep it lubricated with 3M(or other suitible lubricating oil) Otherwise you will just burn the bit.