User:Rhodescus

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I added a 3rd party educational link to the Hazmat page. 9/22/2006

I added a section on the mechanics of using screws. I'm a little uncertain about that one, because of a lack of references. The addition concerns trade knowledge on how to avoid stripping screws, nuts and bolts. I cannot find an online reference to cite, and I know of no paper references. None of my mechanics books delve into that topic (the closest one being to back off a cutting tool on a mill each time to seat it properly!) I hope it doesn't get removed, as the greatest thing noone seems to learn about bolts, nuts and screws is how to fasten them without ever stripping them (unless you learn from a master tradesman.) I've actually been told what I wrote more than once. 9/23/2006

http://www.cellphonehacks.com/viewtopic.php?t=19127 contains this text (but it is an anonymouse user :( 16.) Put back the screws. Don't over tighten them, use a quality screwdriver, not your pocket knife. (Tech-Trick: When replacing a screw, put in the screw, put the driver in it and while lightly pressing, turn the screw as if you are removing it 'till you feel it "click". This is the threads "dropping" into place. Then continue to tighten the screw. This "trick" prevents stripping the threads.)

Hah, here's a better source: When replacing screws in plastic do it like this - if you turn the screw backwards you will hear a series of clicks as the tip of the screw rides the thread up and then drops down. Just after a click and a drop, screw it in - it should go in easily, do not overtighten. You don't want to be forcing another thread because two threads is basically no thread. If you took the door off like I did for the photographs just click it back in once all the screws are tightened. From: http://photo.net/equipment/hitachi/mp3microdrive/ , an article on the modification of an mp3 player.

Another one, . I always rotate the screw backwards to let it fall into the original thread, then slowly start turning forwards. I'm in the habit of doing this with all screws, but threads cut by a self-tapping screw, in plastic or metal, are the easiest to mess up. From: http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv008.cgi?read=17614

Again: When you replace the screws, try to remember to re-use the threads in the plastic. If you don't, after a few insertions, the plastic in the hole will be shredded, and the screw won't hold. Push the screw gently into the hole, and turn it backwards while pushing gently inward. You should expect to feel a bump when the threads align. Only now should you tighten the screw. Experience and judgment will tell you how tight it should be. (For those with really-big tool budgets, there are torque screwdrivers!) From: http://www.xnumber.com/xnumber/alex_knight.htm

More: Insert screw in hole, and gently turn it backwards until you feel a distinct "click" then reverse direction and the screw should go in easily. (A caution not to over-tighten might be advised too.) From: http://www.massena.com/darrin/pilot/luiz/item1.htm#Case%20screw%20comments

I'm not sure how in the world to cite all these, and that would make the page messy. But this research shows that technically minded people back their screws up before tighting them, to align the screws. So it is verifiable. Didn't think it would be that hard, did I? Took close to ten google searches, and nine pages into the last search to get just that many references. I'm sure there's a paper reference somewhere, but that'd take years to find, I'm sure.