Couldn't find the original DIY ash vacuum thread to give credit, but that's where the idea came from. Who posted that? Anyway, here's my rig (see: photos). I was surprised that I got lucky on both hole cuts. Didn't even need to seal them. At least, it worked well enough. I filled this thing up about 1/3 full of water. I might use a little less water, maybe 1/4 full, next time as there was plenty to suspend the amount of ashes I vacuumed up. Could have done a lot more. Nasty water! There was only a hint of water on the exit side hose. Maybe someone can suggest something to use to reduce that further? Mrs. Mo Heat will be surprised to find the hearth finally cleaned. Hey, it's only July. What's the hurry?