Okay. I've done this. Only made a couple pots, because, as I thought, thicker cloth is better. I thought the terrycloth was perfect.
But, I had a little accident while arranging stands for this project. I needed a bigger stand, so the roommate reminded me where we had a longer cement block under the tub of tomatoes. I got it over to where I was working, but then dropped it on my foot. Tried to get some more done after taking some pain pills. Didn't really happen.
When my foot isn't so swollen and doesn't hurt so much, I want to try to work with the thin cloth a bit more. I would like to know if I can thicken the planters by waiting for the cement to dry, then adding more cement for those with the thin cloth. I do have more thick cloth to use, but I haven't cut it up yet. I wanted to start with the thinner stuff and smaller pieces because I want to make bigger planters with the thick stuff. I especially want to make a big and long pot for my clematis. I also want to make a large pot for the fig tree I plan to buy from HD if they still have them when I have the money.