How I clean, or more like maintain, my plain gut strings: The ground rule: You`re maintaining a string, not salvaging it. Don`t overdo anything. String want`s to be even, in every way. 1. Tune the string down for it to be mobile enough over the bass, for the prosedure, 5th or so. 2. Run a lighter under the string, for the whole lenght from nut to tailpiece. Slow enough to burn the " hair " down, fast enough for not burning a uneven spot to the string. 3. Sand the spots that had " hair " on, or feels otherwise uneven, with stupid high grade sandpaper, steel wool or such. Don`t use force, remember the key word " even ". 4. Wipe the string throughout it`s lenght with vegetable oil from your kitchen. 5. Let it be for a couple of mins if you can. 6. Rub the string with kitchen paper or soft cloth, a couple of times. Think like you were handling sanding paper, now you can use force, but DO NOT BEND THE STRING AT ALL 7. Tune it up and rub it again with..
If you have GD plain guts, you`re propably fine with doing the job for the D string while the G is at stage 5. Then start with the D string when you`ve finished the 4 with the G sdring and continue overall process when you`re finished with the stage 4 on the D string.
This is how I do it and never had a problem with. I`ve killed two G strings with going too far with the sanding process. What I learned from that is that a string want`s to be even in every way, and that gut strings are organic, meaning that if you absolutely don`t have to do something, it`s best to not to.
For wound gut strings I don`t have anything but wishing you good luck.
@A. Munk, Should we have some kind of a club?
Ari Reiska Lehtinen
EDIT: Every once in a while, app once in 6 or 12 months: When there comes the time you try other strings for the reason of going back to ones you used anyway: Stage 1. Take the strings off. 2. Run a lighter throughout. 3. Sand throughout. Soak them in vegetable oil, let them be there overnight. 4. Take them off, wipe thru multiple times and let breathe. 5. Store in dry and damp or use rightaway.