There are loose corners on the inside of the figure from where you folded the outer edges in. The bottom of those edges that are in the middle are folded into triangles.
Start by practicing your toss. Ensure that your toss is consistently going up to a comfortable height straight above your head. Then, let it drop slightly lower than your regular...
Click on the link in the "Sources and Citations" section at the end of the article. There is a good photo panel on that page showing what each step looks...
If you are referring to a mechanical seal, then I usually find that if you phone the pump manufacturers and ask nicely, they will usually send out some information to...
