I have been asked how I did this - so I thought I would share. (thanks by the way - that's flattering lol)
Ok well its super simple - that's the best part lol.
Go to Hobby Lobby (or some frame shop or whatever) and get the "Display Case" and some felt. Note they have bigger Cases as well. Then get some hooks (I got mine at Ace Hardware). Be creative - that brass bar in one of mine I got over at Ace as well.
When you get it all at the house take a ruler and measure the blades you want in it, and go nuts drawing inside the case trying to get it just "so." Then put the screws in (mine were 5/8" and they protrude just a touch out of the back). Place your blades in and make sure you like how it looks. There may be allot of "fiddling" here, but get it right. Don't worry about messing up - the felt will cover all lol.
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Now take out the screws in preparation on placing the felt on. Because my screws have "shoulders" (not sure that what it's called but well go with it : )), they leave indentions in the foam backing when you take them out - that's a good thing.
Cut the felt about an inch bigger than the frame and place it inside pushing the edges under the frame with a butter knife or ruler like I did. It sounds odd but when it's in front of you you'll see what I mean. Moreover - don't use glue! Glue bleeds through felt and it'll look bad. The screws will hold it all in place.
After putting in the felt - feel for the "indentations" left when you put the screws in last time. It's super easy - simply "re-find the hole" and then re-place the screw. Balm - You are done!!
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Now you have two issues left as i see it to deal with.
1. Getting it on the wall. I intend to open mine about every other day - so I wanted it on tight. I used two metal "L's" I had to sand a little off the back to get it flush but that was ok. Oh and I tore off the stand part on the back too in order to keep it flush. The thing is hiding those L's. Maybe someone else has a better idea.
2. If it's going to be in a hot and steamy den - you might want to think about how to seal it from the moisture.
Good luck and don't get discouraged - a little messing around and next thing you know you have a functional and attractive display case!