[ARC5] Reviving squealing "command" receivers (re-capping)

[Mike Hanz]

On 3/6/2011 3:03 PM, WA5CAB at cs.com wrote:
> On the tubing or pipe cutter, I'll add one selection point I don't think
> Dave mentioned. All (or virtually all) cutters will have a cutting wheel and
> two backup wheels or rollers. On the smaller ones the backup wheels are each
> often one solid cylinder. To cut off the flange and mica or phenolic disk on
> the canned capacitors, you need a cutter with a groove in the backups that
> is wide enough to straddle the flange while allowing the cutter to sit
> perpendicular to the longitudinal axis of the capacitor can. On the small to
> mid-sized cutters this may require removing the backups and making or widening
> the grooves. Fortunately the backups are usually easily machined (not highly
> hardened steel).

Good point.  All the ones I have ever bought have a groove in them, for 
some reason.  I posted photos of the process with pipe cutters several 
years ago at 
http://aafradio.org/garajmahal/Removing_command_receiver_capacitor_tops.html  
Recall that only some of those capacitors can be soldered - many are 
aluminum!

73,
Mike