fitting stained glass without breaking it-any tips

[dogwood_chris]

i have fitted french doors in a gap between 2 rooms and above the doors i have built a frame to fit glass windows. i bought two old stained glass pieces and have built the frame to fit them. i have put moulding in on one side and in the next few days plan to put the windows in place and put the moulding in from the other side to hold them in place,
i was going to use short panel pins to hold the moulding but i'm worried that tapping the pins in may cause vibrations and crack some of the glass panes.

Is this likely to happen?

anyone got any tips on how to do this without cracking the stained glass?

many thanks

 

[chappers]

shouldn't do unless they are really flimsy or in a bad state of repair

 

[dogwood_chris]

okay thanks..i just had visions of me hitting the panel pin and the whole thing shattering