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If you are drilling straight through and have not got a standard bench drill, measure the diameter of your pipe.
Get a piece of wood and cut it to half that diameter, place the pipe on a flat surface clamp it if possible and put the wood beside it, mark a line with a piece of chalk( make sure the chalk has a chisel type edge on it rub it along anything hard to wear it down flat) or permanent marker. Place the wood the opposite side and do the same.This will give you two central lines along the pipe.
To get lines along the circumference get a 2inch strip of emery paper hold it tight on the pipe and wrap it around 2 or 3 times making sure the edges line up and mark around the pipe.
Where the circumference marks meet the length lines is your drilling points. Mark with a bobpunch and drill from each side.
Sounds very long but you will have it done in a few minutes
If you are drilling alot of holes it would be worth your time buying a cobalt bit. They hold their edge alot longer than the standard drill bit. Their are also bits now that have a pilot tip on them saves you having to buy 2 or 3 bits and they are very good. I tend to buy them myself in preference to the others.
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its evolution baby
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