Hi Guys if your acoustic guitar is making some strange buzzing sounds, and you suspect it has a broken brace,
Then you can build this handy mirror to look inside it for about $12 AUS. This mirror can be bought from Stewmac's for about $36AUS including freight
It is quite simple to build. You need a sheet of A4 3mm thick Cast Acrylic mirror.
using a pencil and ruler, divide the paper backed side into 3 x 70mm x 297mm.
With a stanley(Utility for the younger folk) knife and a glass or tile cutter score two lines along the two lines you just marked.
I used the stanley knife to make the first score so as to ensude the paper backing was cut through. I then scored it again witha Glass/Tile cutter(not one of the ones with a wheel) I then went over it again with the knife.
I clamped the piece in my wood vice. Now my wood vice is about 450mm long, so if you don't have a nice big vice like me then I suggest you clamp the piece between two sharp edged piece of timber. Ensure the scored line is right along the edge of the wood.
Clamp it to something solid, then apply some presure against the scored edge. The piece should snp cleanly. Be very careful as it will be sharp and you can cut yourself. Also note if you haven't scored it poperly at can snap baddly.
Once you have three nice segments then tape them together so they will fold up neatly. I only had some masking tape and I would suggest using some type of cloth or fibre backed tape.
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