Homemade pvc pipe (advanced

yo i know how to make a regular straight rail but doesn anyone know how to make bends such as rollor coaster rails or whales tails, so like how do u bend the piping?
 
lol, not sure man, but i have a 3.5 in circumference 20ftr and its wickked flexy, so it doesnt seem like you need much, other than a clamp to hold it in then drill up from the bottom

that is after uve made a frame for it
 
no it doesnt catch? i didnt think it would, but i didnt wanna risk it, and from previous exp i knew at least it would hold in.
 
I made a rainbow rail las summer (below) it sounds kinda hack but i just put different lengthed 2x4s up right with a groove cut into the top of them to hold the rail then drilled through the 2x4 and pvc tube at the points where they intersect and used heavy duty zip ties to hold it together. its cheap and they are easy to replace when they break. i used two thin pvc rails so that they would bend easier and spread out the impact it works well and its pretty sturdy ive only ever replaced 3 of the zip ties.

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