Bridge application techniques?

[Shepard]

I was trained with an old Novus bridge. I was taught to unscrew the injector, then apply the bridge suction cup so that the injector is about an inch from the chip... then slide the whole bridge so that the injector is over the chip, then screw the injector down until it seals. Then I bought the CAT bridge from PolyLite.

I soon discovered that I prefered attaching the bridge to glass by only loosening the suction cup, then as I tighten the suction cup the injector tip makes a seal, then I slid it over the chip... never adjusting my injector height.

I think what I am doing goes against the book (even my PolyLite CAT bridge instructions), but it works well for me. Is there something I am missing? Is there a good reason to change my ways?

[SGT]

Question:

If you do not adjust the injector once it is in place, how do you determine if you have to much or to little tip pressure?

Note: Per your method the area that you are using now to seat the injector is not comprimised so actual tip pressure require could be different.

Just something for you to think about...........

[screenman]

Wait for the crack out, my have you been lucky. Doing it the way you describe assumes all screen are flat or have exactly the same curviture and that you place the bridge in the same position each time. The adjusting screw is for setting the injector seal pressure, the suction cup is for holding the bridge on the screen. Playing with and fixing glass properly is about using different variations of pressure and vaccuum to end up with a high quality finished product, do not comprimise.

Why do you feel your way is better? please describe maybe I am missing something.

[Bois]

Consider the injector seal. When you move it over the break the edge of the glass break (pit) may scratch or tear the seal slightly thus allowing for some seal compromise.

[Shepard]

Ya'll's replies make perfect sense! I was under the impression that the seal preasure was strong enopugh if resin did not leak out and too strong only if the windshield cracked out... I have readjusted at times when my preasure was flexing the legs in a way that was hindering filling them.

Screenman, why better? I doubt it is... my thought was that I would loose less resin to dripping if I immidiately made the seal when I put the bridge on... especially the thinner resins... you guys don't have problems with that?

Tearing the tips does make sense as well ... I will start screwing in and see if I have any new good excuses not to!

Thanks for your feedback all!