ShortScale Forum Index www.shortscale.org
Head 'n Neck Above
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
UploaderUploader   ShortScale WikiBuilder

Suggestions for digging out a snapped screw?

 
Post new topic   Reply to topic    ShortScale Forum Index -> Guitar Projects and Tech/Set-up
View previous topic :: View next topic  
Author Message
xHJYMx
.
.


Joined: 22 Jul 2013
Posts: 17

PostPosted: Wed Aug 14, 2013 6:59 am    Post subject: Suggestions for digging out a snapped screw? Reply with quote

I recently got my hands on a Japanese vintage Les Paul.

Unfortunately the screws were equally vintage and rusted to hell so they kept breaking when I tried to take them out. I managed to get them all out EXCEPT the one holding the pickguard to the side of the guitar. The head and a few millimeters below the head came out before it snapped in half, and the rest is left in the body.

It is a kinda thin screw so drilling a small hole in it for screw extractors might not be possible (also i don't have a power drill).

Any suggestions on how to get it out?

Back to top
View user's profile Send private message
Chris Fleming
.
.


Joined: 08 May 2013
Posts: 507
Location: Glasgow

PostPosted: Wed Aug 14, 2013 8:05 am    Post subject: Reply with quote

The only thing I can think of would be to carefully score the top of the screw til you make a line deep enough to use a small screwdriver to get it out. I've got a small artist's etching tool that I've used for a similar problem, but I'm not sure what you'd use. Maybe try a few things on the other half of the screw to see if they can scrape into the metal well enough?

Tricky wee problem though
Back to top
View user's profile Send private message
MatthewK
.
.


Joined: 11 Aug 2008
Posts: 771
Location: Hobart, Australia

PostPosted: Wed Aug 14, 2013 10:05 am    Post subject: Reply with quote

It's probably rusted into the wood though - cutting a slot in the top wouldn't allow you to screw it I reckon. My guess is that you would cause way more damage getting it out, than leaving it in. If it's securing the pickguard to the side of the body, perhaps you could angle the bracket slightly and put a new screw in beside it. If it snapped off below the surface you should be able to fill the hole easily depending on colour.
Back to top
View user's profile Send private message
speedfish
.
.


Joined: 27 Oct 2011
Posts: 1141

PostPosted: Wed Aug 14, 2013 1:09 pm    Post subject: Reply with quote

Chris Fleming wrote:
The only thing I can think of would be to carefully score the top of the screw til you make a line deep enough to use a small screwdriver to get it out. I've got a small artist's etching tool that I've used for a similar problem, but I'm not sure what you'd use. Maybe try a few things on the other half of the screw to see if they can scrape into the metal well enough?

Tricky wee problem though



...You might be able to cut a slot into it with a small diamond file or if the area will be covered by the pickguard, then you could remove some of the material around the sides of the screw until you are able to grab the screw remnant with needle nose or similar pliers and unscrew it, then fill the opening with "JB Weld" wood, plastic wood, wood shavings and glue or the like. If you decide to remove by the second method first set the pickguard down in proper position and tape masking tape along the pickguard's edges. This will provide a boundary so that you don't remove material that will be exposed beyond the pickguard's edges and will also serve some protection of the finish as you work on getting the broken screw out.

Someone else may be able offer experience with adding oil or some other type of lubricant to facilitate the removal.

Could you borrow a power drill and some drill bits from one of your mates? A power drill and a 1/16" or 1/8" bit would allow you to drill straight down beside the broken screw, then you could just push the screw out sideways into the opened area. You might have to drill one to three holes( C-shape) pattern to facilitate this. Does this make sense?
_________________
Disciple of Pain

"I'm like the monkey screwing the skunk. I haven't had enough, but I've about had all that I can stand!"
Back to top
View user's profile Send private message
cur
.
.


Joined: 18 Jan 2009
Posts: 7291

PostPosted: Wed Aug 14, 2013 1:58 pm    Post subject: Reply with quote

Use an extractor. First you drill a small hole into the snapped off screw. The use the extractor (which is reverse threaded).

Don't know where you are from, but you can get a set cheap from harbour firefights.
Here
_________________

Back to top
View user's profile Send private message
Remulak
.
.


Joined: 05 May 2013
Posts: 102

PostPosted: Fri Aug 16, 2013 10:48 pm    Post subject: Reply with quote

I've never had luck with an extractor for tiny screws. Maybe it's just me, I dunno.
Back to top
View user's profile Send private message
speedfish
.
.


Joined: 27 Oct 2011
Posts: 1141

PostPosted: Sat Aug 17, 2013 1:14 am    Post subject: Reply with quote

Remulak wrote:
I've never had luck with an extractor for tiny screws. Maybe it's just me, I dunno.


Same here.

Dremel and similar rotary tools make bits that look like a grooved ball or cone sitting on the end of a drill bit that are used for burring and shaping that might grind that thing down to metal shavings? Anyone else tried this?
_________________
Disciple of Pain

"I'm like the monkey screwing the skunk. I haven't had enough, but I've about had all that I can stand!"
Back to top
View user's profile Send private message
61fury
.
.


Joined: 31 Dec 2010
Posts: 830
Location: Knoxville, TN

PostPosted: Sat Aug 17, 2013 4:05 am    Post subject: Reply with quote

I broke a screw in the headstock. Dug a little pit around the screw with an Exacto knife and was able to get some pliers on the shaft. It didn't show, yours won't either. Or just leave the pickguard off
Back to top
View user's profile Send private message
xHJYMx
.
.


Joined: 22 Jul 2013
Posts: 17

PostPosted: Sat Aug 17, 2013 2:31 pm    Post subject: Reply with quote

I appreciate everyone's suggestions.

I tried to make a little groove in the screw for the screwdriver to catch onto, but I think i just made it uneven and less likely to come out.

The plan now is to get my hands on the cheapest power drill Japan has to offer and to use a metal-use drill-bit and just drill the screw out. Does that sound like a good idea or will I just make things worse?
Back to top
View user's profile Send private message
cur
.
.


Joined: 18 Jan 2009
Posts: 7291

PostPosted: Sat Aug 17, 2013 2:45 pm    Post subject: Reply with quote

If you don't have tools, bring it to a luthier. Cheaper then tooling up.
_________________

Back to top
View user's profile Send private message
cur
.
.


Joined: 18 Jan 2009
Posts: 7291

PostPosted: Sat Aug 17, 2013 2:49 pm    Post subject: Reply with quote

Remulak wrote:
I've never had luck with an extractor for tiny screws. Maybe it's just me, I dunno.

You need to drill at low speed with a good metal bit. I have done it on this sized screw.
_________________

Back to top
View user's profile Send private message
James
Nutmeg


Joined: 13 Jul 2006
Posts: 10645
Location: Boxingham Palace

PostPosted: Sat Aug 17, 2013 2:50 pm    Post subject: Reply with quote



Absolutely no way it could go wrong.
_________________
Shabba.
Back to top
View user's profile Send private message
Chris Fleming
.
.


Joined: 08 May 2013
Posts: 507
Location: Glasgow

PostPosted: Sat Aug 17, 2013 3:22 pm    Post subject: Reply with quote

Yup. Take precautions so as not to do any damage. A few beers and chasers to steady the nerves, balance gingerly on your knee and use the force... oh and really dark sun glasses to make you look cool.

You going to dowel it up after and re-drill?
Back to top
View user's profile Send private message
laterallateral
Traynor or Death


Joined: 16 Jan 2008
Posts: 5944
Location: Montery Howl

PostPosted: Sat Aug 17, 2013 4:20 pm    Post subject: Reply with quote

Dig it out with a spoon you sharpened on a big rock.

Seriously though, I feel for you. I think you're definitely going to have to drill it out. You might want to consider using one of these:


_________________
Last edited by laterallateral on Fri Sep 19, 2014 3:05 pm; edited 115,726 times in total
Back to top
View user's profile Send private message
MatthewK
.
.


Joined: 11 Aug 2008
Posts: 771
Location: Hobart, Australia

PostPosted: Sat Aug 17, 2013 10:16 pm    Post subject: Reply with quote

Generally for a metal bit to cut, you need lubrication and that is going to soak into the wood and may damage it.
If it was mine, I would get a slender nail punch, and tap it a couple of millimetres further in, then put a plug above it to use a short, wider screw to hold the pickguard.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    ShortScale Forum Index -> Guitar Projects and Tech/Set-up All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB 2001, 2002 phpBB Group

Anti Bot Question MOD - phpBB MOD against Spam Bots
Blocked registrations / posts: 621920 / 0

Guitars at Musician's Friend

Help support this site by clicking the above link!