Replacing screw coil screws on a humbucker.
- Thread starter Xeromus
- Start date
Re: Replacing screw coil screws on a humbucker.
You'll need to match the thread pitch and size......they have to thread through a couple of metal bits and you won't have the power to use the new screws to thread the metal to a new pitch.
A battery drill is great for doing this.....so quick
You'll need to match the thread pitch and size......they have to thread through a couple of metal bits and you won't have the power to use the new screws to thread the metal to a new pitch.
A battery drill is great for doing this.....so quick
freefrog
Well-known member
Re: Replacing screw coil screws on a humbucker.
Changing the pole screws one time shouldn't harm - even if, as mentioned above, the screws must pass through the holes of a pole shoe/ keeper bar in most humbuckers.
Multiple screwing/unscrewing of different pole pieces in a same bobbin might generate the following issues:
1)If the pickup has a threaded baseplate, the holes in this baseplate might end a bit too large, allowing the screws (and/or the plate itself, the keeper bar, magnet(s) and slugs) to vibrate and to generate squealing;
2)if the pickup has a NON threaded baseplate (like contemporary Duncan's), the screws will be threaded in the plastic bobbin only and might tend to enlarge or to strip the holes in this bobbin, in such a way that pushing on a protuding screw pole might finally press it in without effort...
In both cases, structural integrity can be restored with a bit of wax in the holes or with silicon plumber tape around the screws.
Changing the pole screws one time shouldn't harm - even if, as mentioned above, the screws must pass through the holes of a pole shoe/ keeper bar in most humbuckers.
Multiple screwing/unscrewing of different pole pieces in a same bobbin might generate the following issues:
1)If the pickup has a threaded baseplate, the holes in this baseplate might end a bit too large, allowing the screws (and/or the plate itself, the keeper bar, magnet(s) and slugs) to vibrate and to generate squealing;
2)if the pickup has a NON threaded baseplate (like contemporary Duncan's), the screws will be threaded in the plastic bobbin only and might tend to enlarge or to strip the holes in this bobbin, in such a way that pushing on a protuding screw pole might finally press it in without effort...
In both cases, structural integrity can be restored with a bit of wax in the holes or with silicon plumber tape around the screws.
Last edited:
freefrog
Well-known member
Re: Replacing screw coil screws on a humbucker.
Personally, I had to deal more than once with screw poles that repeated screwing/unscrewing operations had left loose. Pickups with non threaded baseplates and soft butyrate bobbins are the worse for this IME but I've also met this issue with other products (including P90's and not only HB's).
That's a limitation imposed by physics to the old studio trick consisting to pull off the screw poles each time a single coilish sound is required from a P..A.F. style HB... :-/
Personally, I had to deal more than once with screw poles that repeated screwing/unscrewing operations had left loose. Pickups with non threaded baseplates and soft butyrate bobbins are the worse for this IME but I've also met this issue with other products (including P90's and not only HB's).
That's a limitation imposed by physics to the old studio trick consisting to pull off the screw poles each time a single coilish sound is required from a P..A.F. style HB... :-/
