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A word of caution:Most electrical conduit is galvanized. You do NOT want to breathe the fumes of a galvanized pipe being heated/burned.Maybe substitute the galvanized pipe for copper pipe.
Thank you for posting this. You are completely correct on the clutter and damage these signs do. I also greatly appreciate the alternatives you suggested.
Home Made Bidet
Giant wooden Lego men
Very Strong Magnetic Camera Mount
How to Kill Yourself
Vacuum removal of object stuck in child's nose
Motorcycle Shell DIY Garage
What's better than water Balloons... Sponge Balls!!!
How to wax (waterproof) a Carhartt coat
How to Make 'Moss Graffiti'
Build a World's Smallest Electronic Shocker!