As an aircraft mechanic, I learned how to deal with the removal of screws... thousands of them... and I have the forearm to prove it! But NOTHING compares the the frustration of removing rusty screws in our old cars... and those of you who have ever removed a door hinge screw... you know they can be a bitch! So a couple of years ago I was removing some rusty hinges on a '50 Ford... they had never been off, and despite the car being a one owner california car... they were STUCK! So after soaking them with Tri-flow, WD-40 and liquid wrench... I dug out the old "Hammer-the-shit-out-of-it" impact screwdriver... and proceeded to mushroom one of the Phillips headed screws on one of the hinges... Then the owner showed up... a guy who is the definition of "anal retentive"... he also happens to be the owner of the FBO that I worked at... so he knows how to un do screws! So, he takes one look at the screw, gets that look on his face, and then says that he has just the thing I need to take those screws out... even the one that was destroyed. What he described was a tool that Snap-On makes... but for FREE... I whipped one out myself in about 15 minutes... What it is: Basically it is an adaptor for your air hammer... yea, they usually come with a chizel, a sheet metal cutter and a punch... and bein's that I buy the cheap ones at Kragen, I usually have an extra chizel or two lyin' around... So, I hacked the end off of a bit... ground the chrome off a Tiawan 1/4" socket... welded that to the end of the old chizel and then welded an arm made out of 3/8" rod onto the side. To use this wonder tool... all you do it install it in your air hammer, put a tim in the end of it and then lightly apply pressure to the trigger... now you don't have to go to town on it and put full line pressure to the hammer... just a dat-dat-dat-dat-dat-dat rhythm will do. onse you give it a dozen hits or so, begin applying pressure to the handle and the screw will come out... guaranteed you will NEVER have to drill another screw out again. Oh yea, this tool is a little hard on the tips... so you will go through them quite often... I have pictured a 5/16" tip, which may be the hot set up... Anyway, here's a pic of the parts to make one, an air hammer and a completed screw extractor. Screw away! Sam.