Can you get a thrumming cord in there? BTW you can shape the rubber
bullets to suit if needed, I use a diamond file and “turn” them to
the required profile with the flex shaft. You might also look at
burnishing for fine corners, this does require the best of access
BTW There is “new” thing out there called “aircraft tape” that is
quite stiff and very thin and very flat that does an excellent job on
small flat cut outs in galleries and such. I was given a small ~2’
sample (1.8" wide and ~.02" thick) last week and I have to say it is
nice stuff to use.
Now if I could just find a local supplier… Ok a bit of Googling
lead me to this place, http://tinyurl.com/btkbbz and although what I
have is different colour this stuff seems to have the same physical
dimensions and intended use, I also think the stuff I got is also
Teflon coated, but the coating might also be wax, I’ll have to see
what I can find out from the chap who gave it to me…
Cheers, Thomas Janstrom.