[Heathkit] Heathkit Digest, Vol 101, Issue 3

[G3OOU at aol.com]

Hi Bob
 
A very sharp scriber is also useful for digging out broken cores - dust  
iron cores are fairly easy, ferrite cores are much more difficult as the  
material is much harder.
 
73

Bob

Bob F Burns
C Eng,  FIET, MSE
Amateur Radio Callsign: G3OOU
Registered RSGB  Instructor
G-QRP Member No: 6907; Zone: 14, QRA: IO91WH; WAB:  TQ25
Secretary of Crystal Palace Radio & Electronics Club: _www.g3oou.co.uk_ 
(http://www.g3oou.co.uk/) 
Technical web site: _www.qsl.net/g3oou_ (http://www.qsl.net/g3oou)