12-06-2009, 07:05 PM
Jim.
These could not work with the same function as the bellcaps being shown by Jurjen in his How To, the reason being as I have mentioned earlier the lower level of their countersink is at the same level as their outer edge and therefore it is against the leather before any riveting poundage is applied.
There is also that the walls of their countersink are more of a concave nature where as the walls of the countersink in a bellcap are convex, infact they would function very much in the same way as a flat washer creating around 90% more riviting poundage than a bellcap would need.
This is the whole purpose of these caps where they reduce the riveting poundage compared to that of a flat washer and prevent unwanted damage to whatever they are used with, infact it realy does need only very gentle tapping with a hammer to lock them.
These could not work with the same function as the bellcaps being shown by Jurjen in his How To, the reason being as I have mentioned earlier the lower level of their countersink is at the same level as their outer edge and therefore it is against the leather before any riveting poundage is applied.
There is also that the walls of their countersink are more of a concave nature where as the walls of the countersink in a bellcap are convex, infact they would function very much in the same way as a flat washer creating around 90% more riviting poundage than a bellcap would need.
This is the whole purpose of these caps where they reduce the riveting poundage compared to that of a flat washer and prevent unwanted damage to whatever they are used with, infact it realy does need only very gentle tapping with a hammer to lock them.
Brian Stobbs
