SB-10x tuning knob question...

[Bob Burns]

Hi Sandy
 
I have not tried with the large tuning knobs but I have carefully removed  
the skirts from some of the smaller control knobs, originally to use the 
skirt  as a front cover for the outer part of a new concentric control. This 
was not  particularly successful as the skirt is difficult to grip but it did 
prove  a point. Instead, I now turn up new aluminium outer knobs slightly 
wider  and deeper than the skirt for concentric applications using the  
original moulded knob less skirt for the inner part which is much better.  This 
means that I can get more controls onto a standard sized Heath SB-line  front 
panel.
 
You can remove some of the inner plastic that holds the skirt in place  
with a large sharp drill so that it can be gently pulled away. Once you have  
filled the inner cavities with weighted adhesive you can retain the skirt 
back  in place with an adhesive or small threaded or self tapping countersunk 
screws  into the weighted adhesive - I would use some form of two pack epoxy 
which can  be drilled and tapped once it has set hard.
 
I am keen to copy the Heath SB-line style on new homebrew designs so  that 
they match the old units. Take a look at the photos near the bottom of the  
page at _http://www.qsl.net/g3oou/id36.html_ 
(http://www.qsl.net/g3oou/id36.html)  
 
73

Bob 

G3OOU
G-QRP  6907
_www.g3oou.co.uk_ (http://www.g3oou.co.uk/) 

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