curing

[Mark]

I was practicing with my new curing lamp tonight to get an idea of cure times. When I put either pit resin or repair resin I get a good cure rather quickly, the repair resin being slower, this is when I sandwich resin between two pieces of cure tabs. However when I cure without the tab on top it takes forever and even after 5 minutes not fully cured. While it has become solid there is still some wetness to the resin. One test I cured for five minutes without a top tab and was still wet on top. I placed a tab on top of the uncured resin in a couple of minutes it finished curing.

So here are my questions. Does the glass itself act like the tab and speed up the curing? Is the cure process on the repair resin done before or after the cure tab is put in place and the pit filler cured?

I did a search on "cure" and learned but these questions were not really answered.


Mark

[Coitster]

Actualy the Tab causes a lack of Oxygen that helps it cure faster and stronger.

[Mark]

so then the resin inside the glass cures just like that because it is in the same enviroment. No air. interesting. Thanks Coitster. Good to see you back on the forum, missed your posts for a few days.

[screenman]

I would think that all repair resins are what is called ultraviolet anaerobic cure resins. This means they cure properly only without air and with the use of ultraviolet. Remember this it sounds impressive to the person who thinks you use super glueThis is the reason you were getting the wet surface when you did not use a tab to keep the air out. Personaly I normaly finish the repair including pit fill and placing the curing film before I cure.

[magicogar]

Hmm....no wonder when I cure my repairs, the resin that's outside the tabs are still liquid. I thought my resin's defect or something. I cured it for 10 min. and that thing still is liquid.

[desertstars]

Coitster said it.

Incidentally, I can't recall any training program that DOESN'T educate the tech to apply a tab before curing. I'ts also a good idea to "float" the tab rather than pressing down hard. Especially when curing cracks.

[CPR]

It also has alot to do with the curing lamp itself, cheap lamp=bring a book, good lamp=get on to the next one and make some money.

[Coitster]

Sorry guys,
I was gone for a week in Denver doing some advanced PDR training with one of my buddies. It was a great week but I wasn't next to a computer.
David
Coitster