There's a deep gouge in my ski. Three times I tried simple ptex repair, drip candle, but it doesn't last more than a day or two. What should I try next? I'd like to fix this myself if possible. Thanks.
Deep Gouge Repair
One thing you could try right now at no co$t is to make sure the ptex candle repair is the best candle repair you can do.
Did you clean the surrounding area with cleaner? Is your flame perfectly blue when you drip? Is the blue flame contacting the base you're fixing?
Depending on the depth and extent of the gouge, other options are available. Some of them are already in the Wiki.
Didn't use cleaner. I will next time.
How do you get a blue only flame? Mine was blue & yellow. Couldn't get rid of all the yellow. Tried to regulate it with a metal scraper but didn't eliminate it completely.
That's not so bad. Definitely clean it out good, first with base cleaner, then with alcohol. Then rough up the inner surfaces of the gouge and clean again.
May want to use metal-grip repair material near the edge.
I've had good luck with candles, spinning them around to get the flame just right and minimize carbon, but I do think it is a less durable repair than soldering or a repair gun.
You control and limit the amount of cold air that gets in. Cold air-> orange flame.
Keep the metal scraper within 8-10mm of the flame at all times, until you bring the flame to within 6-8mm of the ski. Then the blue flame can actually drip into the gouge and heat the base material before the dripped stuff cools, making a better weld.
The biggest culprit in keeping the flame nicely blue is the person who's holding the candle tends to breathe in the direction of the candle. You don't -exactly- need to use a snorkel or hold your breath during the entire repair, you do need to be aware of the problem.