caulking

You can cut the caulk tube to make any diameter caulk line. Then you smooth it and it spreads out. So what is the best diameter to use, and radius of the smoothing tool? Is a concave finish or a straight 45 deg line best? I suppose you want a diameter larger than the gap between the tile and...

I taught the apprentices at my home local for nearly 20 years, and I learned to caulk as a third generation plumber. BUT, I know that many people look at the pictures and teach themselves to do new stuff all the time, so I am going to ask, without saying what I was taught. I have searched many...