Re: [Harp-L] question for the microphone experts

[Greg Heumann <greg@xxxxxxxxxxx>]

Hi, Bill

That stuff is very common in mics - or I should say "those stuffs".  
Mfg's used all sorts of glue and goo to seal holes, hold transformers  
in place, reduce vibration-related fatigue of wiring, etc. In Shure  
mics alone I have encountered many, many different products. Some are  
hard like epoxy, others soft like silicone, and then there is more at  
every point in between.   You have to dig it or drill it out but there  
is no magic bullet - it will depend on the stuff. Sometimes a solvent  
helps, but rarely. Sometimes heat helps, but rarely. Usually you just  
choose your weapon of destruction and proceed. Use the least invasive  
process you think will work. If it isn't enough, there's less chance  
that you've actually done harm - and you step up to something more  
aggressive.

/Greg

http://www.blowsmeaway.com
http://www.bluestateband.net
http://itunes.apple.com/us/album/duracool/id343874731


> From: William Lifford <william.lifford@xxxxxxxxx>
> Date: December 16, 2010 1:24:53 PM PST
> To: harp-l@xxxxxxxxxx
> Subject: [Harp-L] question for the microphone experts
>
>
> Hello all,
>
> I have two mic shells that I'd like to start working on and turn into
> useable mics.
>
> Each of the mic shells has a black tar-like substance in the back of  
> the
> shell, apparently it used to glue or hold something in place.  Do  
> any of you
> have any idea what this gunk is and how I can get it of there?
>
> thanks,
>
> Bill


/Greg

http://www.blowsmeaway.com
http://www.bluestateband.net
http://itunes.apple.com/us/album/duracool/id343874731