i forgot how to model curved pipes again how did u do that hoot
i use blenders spin tool. it kinda works like stuff but most of the work is adjusting the length and angles
a tip to know is that the spin tool always starts by extruding in segments in a 90 degree angle around the 3d cursor, so put the cursor where you want the model to rotate (you can manually move the cursor by pressing 'N' to open the side window and you'll see 3 or 4 sliders for the coordinates of the 3d cursor