I think I should add a few things because of all the interest. The slot in the screw driver is cut using 1/64 cutting blade in a dremel. Then I put a slightly larger wire than 0.026 wire that I will use. Maybe a 0.030 wire then hit it with a hammer making a cup, so the wire slides in and won't pop out when you twist it. The wire I like to use is the mig welder wire 0.026, with no problem of corrosion yet. Thank you spike-a-pike for helping me make this. If you make this addition too the tutorial magically appear, Thank you again.