Temporary Crowns and Bridges on Dental Implants?

Charles, a dentist, asks:

I have a devil of a time making temporary crowns and bridges on
dental implants. Does anybody have any good techniques that they would care to
share with the rest of us?

I have had problems locking on the temporary bridge to the dental implant platform where I had to cut off the temporary bridge very slowly and very carefully so I would not damage the abutment or dental implant platform. This is a real drag. I have tried some of the techniques I have seen demonstrated at courses but they have not worked for me.