I have never sweeped my chimney on my own. I have been looking for what kind of rods to purchase, and then I came across this idea. My question is I will be sweeping from the bottom up through the insert, what size conduit do most people use. I was leaning towards 1/2" because i have to make that 90* bend to get up through the top of the stove. The liner is mostly straight, maybe a slight 20* bend on the exit of the stove. However, I almost 30' of liner. Would 1/2" have enough strength to bush all the way up or would 3/4" be better as long as i can get it to make the turn.