Vibration use?

[jayjacque]

I like heat. It's my friend. There I said it. I'm not using magnibond YET. We'll see if trying that changes things, but as it is, a little heat is sometimes (maybe more than just sometimes) just the thing to complete a repair. Also sometimes I do my own little shake and dance out in the parking lot when I can't get a leg to fill. Is that what you mean by shaking? LOL

[toab]

Heat is in my toolbox as well.Sparingly used when necessary in conjunction with vacuum.

[splitpit]

You use heat and vacuum at the same time?

[screenman]

Heat and vacuum at the same time is the most effective way to go.

[splitpit]

Heat & vacuum together will help fill stubborn legs? I usually heat in a neutral setting.

[screenman]

I have personaly found heat and vacuum speed up the drying out process. However we are talking about another matter. When I use heat to assist in filling I always have the injector in the vacuum position, the reason being that it helps pull the air out at the same time the legs are closing due to heat expansion. When I have finished heating I then put the injector to pressure (not too much) and then as the damage cools and reopens it pulls in the resin. I must state this is my method and some will disagree with it, as I know. One firm over here insists on being on pressure whilst filling. If anyone needs this explaining better just ask and I will try and explain better when I have some more time. Now its back to my tea break.

[StarQuest]

I too follow the same methods as screeman described. I quess the neutral position that Splitpit uses is ok also. Just remember to never heat during a pressure cycle.

[SGT]

Come on folks lets think about this for a moment. (By the way I do agree with heat= expansion & cooling = contraction.) We are all responsible for using common sense and having the skill to use different techniques.

In the summer, lets say a windshield is 90deg., do you still do pessure and vaccum cycles at that temp? Of course you do.

IMHO, There is no differenece with warming a winshield in the winter to between 70-90 degrees for preping the windshield for repair and then keeping it in that temp range during pressure or vaccum cycles wether it is for the purpose of heating or to assist resin flow. As I mentioned, 1. evaluate the damage, 2.use minimal tip pressure, 3. keep windshield between 70-90 deg. 4. use a means to monitor temp.

[StarQuest]

SGT,

Nothing personal but I totally dissagree with you that winter repair is the same as a summer repair. When temps drop in the low teens and your working a repair outside it's much more difficult to keep both layers at same temps while providing the repair. Using a simple inferred guage on both inside and outside layers of glass will prove that.

[SGT]

SGT,

Nothing personal but I totally dissagree with you that winter repair is the same as a summer repair. When temps drop in the low teens and your working a repair outside it's much more difficult to keep both layers at same temps while providing the repair. Using a simple inferred guage on both inside and outside layers of glass will prove that.

Agreed. A winter repair is different from summer repair in the sense there are different precautions to take before repairing. That being said once the windshield is at the desired repair temp. the playing field is leveled. If a technician is not taking the necessary steps to ensure this who's fault is that? This can and is being done with success when proper technique is used. 70-90deg is 70-90deg wether it is in the winter or summer in my book. Now if you heat rapidly rather than slow and controlled you are doomed to failure from thermal shock. We will have to agree to disagree on this one.

On a side note, sometimes there are repairs that just will not fill, at those times you can stick to text book training you may have recieved or you can with good judgement implement non classroom techniques to accomplish a structurally sound repair or you could finish the repair knowing it might fail but it is good enough. Which one is better?