Epoxy Man Strikes Again

[Farrell]

This is a multi-part message in MIME format.

---------------------- multipart/alternative attachment
Comments below:

Terry Farrell
 =20
----- Original Message -----=20
From: "Ron Nossaman" <RNossaman@cox.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Saturday, March 08, 2003 2:22 PM
Subject: Re: Epoxy Man Strikes Again


>=20
> >My first bridge that I will be gluing on has rib spacing varying from =

> >about six inches to three inches apart. My understanding is that you=20
> >suggest that one screw/button placed every three to six inches (mid =
way=20
> >between each rib) along the bridge will provide sufficient clamping =
for a=20
> >Tightbond joint?
>=20
> Yes, it always has.

Thank you for the clarification. I'm sure if it works for you, it will =
work for me. (I think!)
>=20
> >Might the fearful feel better if a larger block of wood is used=20
> >temporarily instead of a button?
>=20
> You can if you like, but it won't measurably improve the joint. Truly, =
it=20
> works just like we said, and produces a joint that far exceeds the =
minimum=20
> physical requirements for that joint.

Ok, Ok, but its so scary! Ok master, I will trust and =
proceed.............

> >With your process do you see good glue squeeze-out mid-way between =
screws=20
> >(as in on the top side of the board at rib locations)?
>=20
> Yep. You know the bridge isn't going to deflect much in that 6" span, =
and=20
> that 8mm spruce panel isn't going to let the resistance offered by a =
small=20
> pool of Titebond bend it enough to spoil the joint either. Not by a =
long=20
> shot.

No doubt, I'll report back. But I'm sure you are on-track.
=20
> >Maybe part of my problem is I am imagining this floppy panel - but I=20
> >suppose it won't be so floppy after ribs are attached.
>=20
> Yes, the ribs make it stiffer in the direction in which it was floppy, =
and=20
> in the other direction, it never was floppy enough to be a problem. =
Wave=20
> that panel around some after you get the ribs on. Pound on it. Push on =
it.=20
> Try to bend it (careful of the edges, and don't dent it up). Marvel at =
how=20
> something that relatively light can be that stiff. That thing becomes =
it's=20
> own clamping caul.

That's what I am looking forward to. I expected a shipment of spruce =
last fall. Been hard to get exactly what I was looking for. I think I =
have located what I need, and if the world does not fall apart in the =
next two weeks, I should have several hundred feet of prime Sitka Spruce =
to make soundboards from very soon. I am soooooo looking forward to =
that. The feeling of holding that very light, very strong stucture in my =
hands and flopping it around. I am sooooo looking forward to the first =
one. I do believe it will require a number of candles, a whole lot of =
respect for nature and the materials it produces, and perhaps some small =
sacrifice to commemorate the occassion.......Hmmmmmm, when is the next =
full moon? This will be a VERY big deal around here!!!!!!!
>=20
> Ron N
>=20
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/78/fc/00/c7/attachment.htm

---------------------- multipart/alternative attachment--