MauleDriver(at)nc.rr.com
Guest
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 Posted: Mon Apr 09, 2007 3:41 am Post subject: QB Wing Fuel Tank Screw Removal |
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Thanks to all for the advice. I thought I had gotten out in front of
this one by first replacing my 20 year old Craftsman Phillips Head
before trying the first screw. I figured a new driver, along with a
bent arm speed driver, would be the difference makers. Lapping compound
would have done it however. Now I have 2 damaged heads that will need
extraction in all likehood.
Bill "trying to get going with these wings" Watson '605
John W. Cox wrote:
[quote]
When negligence in the use of the dull screwdriver or too little down
force, we resort to a #30 drill bit and then apply a Snap-On 1/8"
extractor. The truck comes four times a week with a lifetime
replacement policy. We keep a second extractor in our tool box, and set
the other one for replacement.
That said, it takes about 100 screw heads to wear out the Snap-On. With
practice you can tell quickly that you are about to strip the head.
Sharp edges on the Phillips and the correct point size make a big
difference.
For many builders, these techniques will not be needed till down the
road when corrosion seals the threads or the head. Most GA hardware is
stripped by using the wrong tip size or not paying attention.
A teaspoon of lapping compound and a little water in a plastic bottle go
a LONG way.
John
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