Author: Oboelips  
Date:   2013-05-28 20:35 
 I've re-lined many a case--oboe, clarinet, double oboe/ehorn, double A & Bb clarinet, etc.  The fabric that is used in cases as lining is a heavier gauge than what you get at the fabric store.  It does have a somewhat stiffer backing.  In the past, I have gotten fabric from the Gemeinhardt Flute company in South Bend, Indiana.  No great color selection--what they could sell me was Royal Blue, but they sent quite a bit for a very reasonable price.   
 
I do agree that a heavy Cotton Velvet (not rayon) would work (I did a 1924 Loree Case for a 1921 Loree, and it HAD to be Purple!).  I use a good, heavy Cotton velvet that I ordered from a South Carolina Mill.  Sadly, many of the USA Mills are now gone. 
 
While upholstry velvet might be tempting, its backing is TOO stiff--I'd stay away from that--it's not going to be able to hold the "nuances of the shape".  With Panne, it's not as heavy as it used to be, and you might get some glue bleed-through.  If you find a good heavy panne, it may just do the job admirably.  I glue with either contact cement or hot glue, the contact cement being preferred. 
 
Latches? I've no idea..do a google search--purse/luggage/case suppliers? 
 
If the outside of the case needs to be redone, you'll need a leather artist to make a nice job of it.  Sometimes hard to find, but I married one!  
 
Time & patience will make the end product worth the work you're putting into it.    Good Luck!
  
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