[pianotech] More agraffes...kind'a

[Jim Ialeggio]

Ron said:

<So does spinning your spot facer in the counter bore to clean it out

What's a spot facer? an endmill?


Thanks all for the responses.

I think the culprit, at least how I was doing it, was high build auto 
body primers followed by a nitrocellulose product. The bond between the 
primer and nitro was terrible. I'm converting to a full auto body finish 
schedule (which thankfully will complete the elimination of nitro from 
my shop entirely...finishes are all waterborne, except small quantities 
of shellac.)

So it sounds like something really cheap and simple like david's box 
nails to keep the flat clean-ish, and breaking the edge of the 
counterbore after the primer with sandpaper should get me there. Since 
I'm subbing this all out to an auto body guy from now on, the trick will 
be to get him to do the necessary post paint followup...unless the full 
autobody schedule will result in a less chip prone finish, and the 
followup is not as critical as with nitro...I'll have to see.

Jim




-- 
Jim Ialeggio	
jim at grandpianosolutions.com
978 425-9026
Shirley Center, MA