[sinistar]

I have done this successfuly but sometimes I have had trouble getting the solder to stick to the can. I tried sandpaper, my taper file, even a small hole pattern. And Have not been able to get the solder to stick. Is there something one of you know that I don't? Does it matter if the can gets hot before puting the solder on the can or do you just put the solder on like you would just anything? I really have been wondering about this because I have a puller but I'm in a fix as just as to how to get the solder to stay on the can. Right now I'm just taking some narrow RS electrical tape and banding the lose solder connections to the can. But this really is bothersome with pending heatsink developments and other motor related engin-e-rings. Please somebody tell me what might be going on.