Repair Success vs Glass Temp. at Break

[Bois]

Here's some food for thought for you Repair Tech PhD's. Has any studies been done?

Does the temperature of the WS at time of break affect the quality or difficulty of the repair process? For instance, take 2 identical breaks on the same vehicle. One originated when glass was 35 degrees (winter) and the other occured at 100 degrees (summer). The repairs are being done in a shop where the temperature is 75 degrees. Would one break be easier to repair than the other?

Like I said, food for thought.

Dale...

[SGT]

I like the way you think Dale! Many variables would have to be explored beyond my brain power and I would imagine a standard set of controls would be needed to guarantee accuracy of testing. Take it one step further and compare it from one mfg to another. My brain is begining to swell!!!

Call MYTH BUSTERS!!!!!

[Mike Allen]

I'm no PhD in glass repair but I have watched the DKI training DVD a few times. :eusa_thin

The first thing that comes to mind when reading your theory is this.

If I were to take 1 cup of water at 35*F and another cup of water at 100*F and bring them both to 75*F, is there any difference at all between the 2 cups of water currently standing at 75*F?

I think we could all agree that the damage occurring at 100*F would be prone to more extensive damage but I doubt the repair process would be any different.

[Layne]

I think that one other variable might come in to play here: At what location above sea level did the damage occur? This would relate to the barometric pressure coupled with the impact force.

[Glasseye]

This business is not rocket science, age of damage & presence of contaminates are the key factors. No two cracks are the same, good preparation of the damage & the customer, prior to commencing the process, is where the skill lies.

[Bois]

If I were to take 1 cup of water at 35*F and another cup of water at 100*F and bring them both to 75*F, is there any difference at all between the 2 cups of water currently standing at 75*F?.

Actually, although minute, their volumes would change.

I think Layne hit upon a more important factor - atmospheric pressure. Would a break being repaired at sea level be easier than one being repaired, say, in Denver? I'm thinking about injector pressure. Would you need less in Denver?

Dale...