How often do you get rocking bridges?

[J Pierce]

We now do very few pfms, but my technique for bridges works well and haven't had a bridge rock in years( I'm sure I'll regret that statement soon??) wax bridge, cut thin Section with blade and seal margins under scope, then close cut with PiKuplast resin,let cure, add spruces ( I break the Resevoir off red wax sprues,wax and seal them on, I use an 8 gauge clear plastic rod dipped in wax, then with a hot blade cut the sprues in a even line attach the runner bar And seal, invest,cast and fit.. I never fit to solid model in wax and good models and pins are crucial.Hope this helps

 

[2thm8kr]

Sorry should have elaborated I duralay the connections in the wax state after spruing .

I realized that after I posted, lol, but I still feel that having them do the soldering is the best way to get your waxers to take the time to do it right the first time. Extra long spans included. They're going to get better at waxing or soldering.