is it normal for the inside of your gas pipe that leads to your roof from your furnace to condensate internally and/or externally on a cold dayThe pipe looks like it is connected to the furnace blower which would seem to blow water into the air ducts (mold issue?_ but I'm not sure how that all worksI noticed a small amount of water collecting (on a dry day) onto a metal ring that goes around the pipe in the atticAnd the top of the furnace has been wet before also on a dry day when I could see a line of water going down the crease of the pipe either from condensation seeping out of pipe from crease or maybe from roof top where there was a gap to outside and condensation coming through rooftop (on dry day)
NO don't use plastic it will melt and be bad for the bodyI suggest using an apple pipe., look it up.
make a waterfall bong with a 1 liter coke bottleyou use the bottle cap as the bowlgets you really blazedgoogle itorrr if you really want to make that water bottle bong, you can use a pen (broken so that it serves as a stem) and then attach aluminum foil to itthese aren't the healthiest methods of courseinvesting in a real bong is so worth it.
What normally happens when you take something cold from outside and bring it inside? That's right it gets condensation on itSo if your furnace has been off and the pipe is cold, what do you suppose will happen when the furnace comes onThat's right condensation until the pipe gets hot enough to evaporate it on contactHave you ever noticed when you start a car on a cold morning or night, the exhaust steams and a lot of times drips water until it heats upThe exhaust from your furnace does the same thingThe combustion chamber on your furnace is completely separate and segregated from the hot air system, so the condensation is not entering the duct workIf the duct system is for A/C also, it should have insulation inside of it that both insulates and absorbs condensation in the ductworkNow if you are seeing condensation, near the furnace after the furnace has been running for a while, it probably isn't condensation, it's probably a roof leakIf it's only in the attic area where it is very cold, it's condensation and normalA different type of pipe may be needed to prevent water damage to ceilings, etc.