lampshades?

[crafty-dame.livejournal.com]

has anyone ever made their own lampshade? i've been googling, but everything i find is to decorate a pre-bought lampshade. (i checked the memories too.)

you know how when you look inside a lampshade, the frame is attached to the fabric or paper with what looks to be fabric tape? what is that? where can i get it? is it ridiculously expensive? what could i use instead?

i have a lampshade a friend made me, and she used electrical tape, but it hasn't held up very well. if worst comes to worst, i'll try duct tape, but i'd like to know what you're SUPPOSED to use.

i want to make a square hanging lampshade. i'm going to make my own frame, but i'm not quite sure how to put it all together.

help please!