Somebody asked the same question many years ago and the majority of the answers were negative: Better not, as coffee filters are not made to be used for embroidery. I'm using water-soluble Vilene and the result is always great. They are selling it in rolls or by the metre (or yard, depends where you live).
I did try it a long time ago and also one time when I ran out of stabilizer. It did work but kind of linty and not made for that and I think in the long run it would be much more expensive. I send for my on a big roll now.
Are they even large enough to hoop??
YES I HAVE SOME BIG ONES THEY ARE ABOUT 12 INCHES AROUND
No sorry but as I don't use coffee filters I haven't got any in the house. I have used weed suppressant though very successfully
no I never tried, and probably will never do....
Maybe in an emergency, but overall I agree with mrskiki. We spend lots of money on our machines and expect our designs to look perfect. Why use items not intended for embroidery? (Confession time: I did use a dryer sheet once while at my mother's because she had run out of stabilizer.)
I have seen a posting where a Cutie in a far distant place used them because of the difficulty of acquiring stabilizer in a hurry where she lives.