I'm trying to drill a hole in the wall so I can route my air hose through. I drilled a hole using a forstner bit and stopped to find it had insulation with paper backing. I was going to try and route the hose through the corner of the wall on the outside, but now that I think about it, I think just drilling straight through the insulation to the otherside is going to be the best bet. Should I poke a hole through it first, then drill? I'm already picturing the bit getting wound up in a tight ball around the insulation inside the wall. lol