[CAUT] S&S Key Bushings

[Jim Busby]

Hi Jon,

You've probably gone through all this but, how long did you insert the iron? Less than 1 second at the optimum temperature seems to work best; it sizes the hole and doesn't seem to loosen the glue. At least that's what we've done for years w/o the problem you mentioned. When students have held it in longer we've had problems though. It needs to be hot enough to nearly singe (but NOT) the bushings thus inserting quickly it doesn't have enough time to heat too deeply. Also, they say that you should use a size that is .003 bigger than the pin size but for the .146 I use the .150 with great success. Not trying to be the expert here.... (I'm assuming that this is hide glue? Other glues act differently.)

Jim

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Jon Page
Sent: Monday, October 20, 2008 1:43 PM
To: caut at ptg.org
Subject: [CAUT] S&S Key Bushings

The S&S I was working on had bushings which were too tight
and using a key bushing iron softened the glue more than it
sized the opening.

Would the VSP properly size the gap in this case
with the use of cauls?   The only problem with this
is that sometimes waiting overnight with the cauls
in place is not an option.
--

Regards,

Jon Page