I've tackled this question with a vengeance since I want to be able
to access my discs easily and also protect them.  I do have two actual
Regina cabinets with dividers for the 15 1/2 size and larger cabinets
for the larger discs.  The availability of the popular size disc (or
should we be purists and say "tune sheet") means my collection got out
of hand and I was forced to branch out.

Luckily, I have some furniture that can be converted; for example,
using a old divider as a template, I turned a sideboard into disc
storage by just inserting as many dividers as I wanted, made from
plywood and stained to match.  The twelve inch discs fit perfectly in
an old phonograph cabinet.  An added bonus is achieved by the wonderful
resonance a sturdy piece of wooden furniture usually gives the boxes
that sit on top.

The local art supply had just the right stiffness of paper stock in
large size that I can cut down and slip between the discs.  Thus they
are stored upright and are never rubbing against each other.  As long
as too many aren't crammed in one slot, they're easy to remove and put
back in.  My own system involves categorizing by number which is a bit
hairy, but as long as I have a printout of the master list, I can find
anything.

Fixing discs?  I've never tackled that; wish I had the nerve.  It's bad
enough trying to get rid of rust.

Claudine Jones