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Old 06-16-2008, 11:53 AM   #1
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Default Stubborn Steel Screws

I have some stubborn steel screws threaded into aluminum (Losi Type-R) and i can't get them out, i broke 3 integy 1/16 wrench tips trying. I tried the "shock" method (put the flat of a screwdriver and tap it w/ a hammer to jar it a little) and that didn't work. Scared to use heat for fear of warping or melting something.

My though was get a soldering iron good and hot apply it to the base of the aluminum strut where the screw is threaded and then try to get it off before it cools. Thoughts?
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Old 06-16-2008, 11:56 AM   #2
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Use a dremel to grind a cross so you can use a screw driver to get them out.
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Old 06-16-2008, 12:46 PM   #3
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If you used thread lock the only way i can see possible is if you remove the screw after applying heat with a soldering iron to the screw head,
if you didn't apply thread lock, is the screw head stripped?
if so, do the dremel method, if it isn't, well, i don't know what to tell you, i've used a full set of integy's for 4 year now, and no heads have broken.
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Old 06-16-2008, 12:52 PM   #4
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You could try drilling the screw out. You need a very sharp and tough drill bit (I find cobalt coated bits to be very good) which is a bit smaller than the diameter of the screw. Drill out the centre, a fair way down, and then you need a reverse tap. This taps a thread into the hole you have just drilled in the screw, and as it is reversed it means that you are turning it anti-clockwise. Hence when the force required to cut the thread is greater than that required to back the screw out, it will simply undo and you can then replace it.
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Old 06-16-2008, 12:53 PM   #5
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Quote:
Originally Posted by a_main_attendee View Post
If you used thread lock the only way i can see possible is if you remove the screw after applying heat with a soldering iron to the screw head,
if you didn't apply thread lock, is the screw head stripped?
if so, do the dremel method, if it isn't, well, i don't know what to tell you, i've used a full set of integy's for 4 year now, and no heads have broken.
yeah my buddy keeps making fun of me saying he's had his for close to that and they are in perfect shape!!

The screws are in w/ threadlock, they are not stripped. I'll try the soldering iron trick first (i have a 1,000w iron) and then i'll slot them I'd like to save the chassis.
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Old 06-16-2008, 02:13 PM   #6
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Apply heat, then quickly try to undo the screws but using the allen/screw driver at a slight angle. it may just have enough bite to get the screw out


hth
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Old 06-16-2008, 02:17 PM   #7
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I personally never use thread lock and have not had an issue with the screws backing out at all.
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Old 06-16-2008, 02:24 PM   #8
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duplicate post
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Old 06-16-2008, 03:05 PM   #9
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I personally never use thread lock and have not had an issue with the screws backing out at all.

really?

screws rattle out all the time on my type R unless i use threadlock,

but i only use the really weak stuff and it holds just fine.
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Old 06-16-2008, 04:16 PM   #10
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Quote:
Originally Posted by a_main_attendee View Post
really?

screws rattle out all the time on my type R unless i use threadlock,

but i only use the really weak stuff and it holds just fine.
I have more problems with wearing out wheel nuts. I guess I am just fortunate or have just the right arm torque to keep them in the car.
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Old 06-16-2008, 05:10 PM   #11
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Quote:
Originally Posted by a_main_attendee View Post
really?

screws rattle out all the time on my type R unless i use threadlock,

but i only use the really weak stuff and it holds just fine.
For a flat head screw that attaches a metal part to a countersunk hole in a graphite chassis, prep the countersunk hole in the graphite (not the threaded hole in the metal) with a little CA first. (One drop of thin CA spread around with a Q-tip works well.) Let the CA dry fully, then tighten your screw. Don't use a lot of torque; just tighten until you feel the screw head "squeak" into place. The screw won't back out, yet you can remove it when you want. The CA needs to be renewed when you don't feel that "squeak".
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Old 06-16-2008, 05:24 PM   #12
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Use the heat. No need to do anything else.. The next thing i'd try if that failed is a left handed drill bit after heating.. Should back it right out
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