Bridge cap materials

[Delwin D Fandrich]

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  ----- Original Message -----=20
  From: Erwinspiano@aol.com=20
  To: pianotech@ptg.org=20
  Sent: October 11, 2002 1:38 PM
  Subject: Bridge cap materials



                  List
                  With really good supply's of maple almost extinct I =
find it more and more difficult to be happy about the wide grain and =
fairly soft stuff I get from my supplier. I'd like to see close grain =
and a strong medullary ray that comes from true 1/4 sawn stock but this =
a rare occurance.  I also find it necessary to drill smaller bridge pin =
holes to get a tight fit. I'm finding that whatever the supply house =
sells for the appropriate size drill bits to give a less than snug =
enough fit. I use a small electric drill to bore with as many of you do =
so I truly  techniques is not the propblem IMHO.
            I'm going to slice up some delignit and test it for notching =
,hardness and pin fit. Does any one have any experience with this idea  =
(odelignit or falconwood) and or similar to my complaints. Tell me I =
ain't the only one, please!
                  Dale Erwin
        =20

We've given up on what passes for maple bridge cap stock these days. We =
now use Delignit or a maple laminate we make up ourselves in the shop. I =
like the physical characteristics of Delignit--at least for bridge =
caps--though I don't like how it looks. The use a resorcinol resin which =
leaves a dark reddish brown glue line. Hence, our own maple laminate =
which we glue up using MPA II or Titebond II for an almost invisible =
glueline.

Delignit is very difficult to notch by hand. A true exercise in =
self-mutilation! Hence our air-powered bridge notching machine.

Del

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