Long Crack Question

[Mr Bill]

Yesterday I received a call from a customer who said she had a had a combination chip with a four inch crack extending from it.
When I got to the job today, the crack was about 14 inches . and followed a half circle pattern.
I don't normally do long cracks that long but since I was already there, I decided to fill it.
I had a hard time seeing the resin as it wicked up the crack and kept curving to the left.
Does anyone have any tips on making the resin flow more visible?
Has anyone ever tried using a long crack mirror?
Is a long crack (12 in) uv light a necessity? I have a small (6 in) uv light with suction cups so had to reposition it several times.
Suggestions?

[Mike Allen]

I use a 6 inch light with no problems. And as for seeing the resin as the crack turns, I've discovered that by simply moving to a point that I can see it, that helps the best. Not trying to sound like a smart ass but I do find myself sometimes in a awkward position trying to watch the progress of my work.

[screenman]

Whenever you do any repairs it is best to look from as many angles as possible as often as possible. You will then find the optimum position. If you only have a six inch lamp that is fine for most repairs. If you are going to do lots of cracks then the 12 inch is a good buy for the cost of a couple of jobs.

I find a nice straight vertical crack easiest, horizontal take slightly longer to fill and may need crack expanders.