[tym]

I know this is an old thread, but I used the tips on this forum to make a couple of alignment tools today. I used PEX toilet supply line and heated it so that I could thread a metal 5/16-18 bolt into it. I then removed the bolt and used my newly formed threads to accept a 5/16-18 nylon socket head cap screw. This allows the screw to be replaced if need be. The oak dowel stiffens the PEX tubing and extends the handle; it can be cut to length as needed.

I still have to drill into the head of the nylon screw a little.