My recipe that I had used for this project is heavy on the cement. And by that I mean that I use a lot more cement than I would in a regular hypertufa trough recipe.
I would use
1 part Portland cement (I was using a 2 qt pitcher)
1/4 part of peat ( about 1 pint)
a handful of vermiculite and mortar mix depending on how much you want it to be textured
water, about a 2 qt pitcher as above added slowly as you get it into a slurry or gravy
Cut the fabric into a circle, an oval, or even use it as a rectangle or square. Dampen it and hang it from your "tower." This will be the support that you hang it on to dry. If you want the pointed edges, be sure your support is tall enough to allow them to drape/hang.
Your tower is your support for the project as it dries. I used a bar stool for my first one. You can use a column of paint cans. or even a lamp shade. (NO, the lamp shade didn't work for me.)
It must be something sturdy to allow your fabric to "drape" and not let the ends of the wet fabric touch to floor. It will change the look of your project if the ends of the fabric touch the floor/table.
Cover your tower in plastic! The piece is a little pliable when you attempt to get it off, but it was a struggle with that bar stool. You don't want your piece to cement itself to the tower.
Check out how it hangs or "drapes" and pull it to one side or the other until you have a vision of what you like. The large one pictured at the top of the post was made from an oval cut about 26" by 39". ( I had earlier made it bigger, but decided I just couldn't handle fabric cut that big. It was a good decision, because that sucker is HEAVY after soaking it in cement gravy.
Once it is all mixed, and you have a consistency like meat gravy, not breakfast gravy ( I'm a country girl), put the whole piece of cloth into your mix and roll it around until it is all soaked with cement on both sides.
Wear gloves of course. I had to pick the mix up and smoosh it into the fabric on both sides, being sure to get it into folds. Did I lie when I said it was MESSY?
**Be sure to mix up enough slurry to get it all wet. Depending on the size of your fabric piece, you may need to double the recipe. If you have leftovers, have a few small cloths ready to drape over a butter dish or bowl, or just pour it into those dishes to make feet for a trough.
When you are draping it over your tower, it is easy to pull and adjust until you get the look that pleases you.
(BTW, I made the biggest mess in the garage floor. Oh my! But when it dries, you can scrape it off and the ShopVac takes care of it. Whew!)
I left my creation for 2 nights in a cold garage covered with a plastic garbage bag, then pulled it off the bar stool tower support with difficulty. It is slightly pliable at this point, but did harden after the next step. I put it back into the garbage bag and left it for 24 hours.
**Important Note: Some sources on the internet speak of setting it to dry in the sun. My advice here is NOT to put it in the sun, but in a shady area and be SURE IT IS COVERED BY A PLASTIC BAG. This is what effects the cure!
After yours is fully cured and hard, you may drill a hole in it with your drill that you use to put a hole in the regular trough. Since it is very thin, it drills easily. No problem.
If you want to use it as a container in which to set a plastic pot of annuals or other flowers or plants, that is fine too.
GOD GRANT ME THE SERENITY TO ACCEPT THE THINGS I CANNOT CHANGE; COURAGE TO CHANGE THE THINGS I CAN; AND WISDOM TO KNOW THE DIFFERENCE.
LIVING ONE DAY AT A TIME; ENJOYING ONE MOMENT AT A TIME; ACCEPTING HARDSHIPS AS THE PATHWAY TO PEACE; TAKING, AS HE DID, THIS SINFUL WORLD AS IT IS, NOT AS I WOULD HAVE IT; TRUSTING THAT HE WILL MAKE ALL THINGS RIGHT IF I SURRENDER TO HIS WILL; THAT I MAY BE REASONABLY HAPPY IN THIS LIFE AND SUPREMELY HAPPY WITH HIM FOREVER IN THE NEXT. AMEN.