Return to the Woodworking Forum | Post a Follow-Up

 o
A screw with a stripped head & a special challenge

Posted by Central_Valley (My Page) on
Sun, Oct 6, 13 at 10:18

This is not a woodworking problem -- the screw holds together the case of a chainsaw -- but woodworking seems to be the most suitable topic to post in.

The challenge is that the screw is recessed in a well about 1/2" deep. It's a common design for tool cases with a left and a right half held together by screws. This makes the standard extraction technique impractical; inserting a drill bit in the well blocks the view so that I can't see what I'm doing. It makes most of the alternatives I've read about impossible, even in theory.

Have you successfully removed a screw in this situation? How did you do it?


Follow-Up Postings:

 o
RE: A screw with a stripped head & a special challenge

I'd use a small drill bit, bore about 1/4 to 3/8 inch into the screw head and use an 'easy-out' to extract the screw. The instructions that come with the easy-out will suggest a drill bit size.
Before doing this, though, are you positive you are using the correct size screwdriver? A #1 phillips will often work on a #2 sized screw, but when either is a bit worn it can result in slippage. Assuming you are dealing with a phillps head screw, make sure you are using a screwdriver of the correct size that has a good condition tip. Also, a good deal of inward force onto the screw head will give the screwdriver a better chance of getting a purchase.


 o
RE: A screw with a stripped head & a special challenge

Would it help to put a wide rubber band between the screwdriver and the screw, and then apply that "good deal of inward force" so that you stretch out the rubber band to be thinner? The idea is that the rubber band is supposed to create a grippy surface.
I've seen that suggested on Pinterest, but I don't know if it works.

Then slow, small turns--think 1/32 of an inch or something. I find that to help w/ stripped screw heads; as long as I don't try to do the whole thing at once, I can actually get somewhere. Eventually, LOL!


 o
RE: A screw with a stripped head & a special challenge

As a mechanic, I had access to or owned many special tools. The first one I would reach for in your situation would be an impact screwdriver---like the one on the left in the link(manual operation)

Those are reversible, but are mainly used for removal of stubborn screws/bolts.

If that failed, using a small drill bit, followed by a larger one that will remove the head of the screw would be choice #2.

Once the head is gone, the case is able to be separated and heat applied judiciously to use a pair of vise grip pliers to remove the screw shank.

Here is a link that might be useful: Impact screwdriver


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Woodworking Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here