A few weeks ago my friend and I made more things with cement. I had seen people filling balloons with plaster and molding them into the desired shape to cure. We tried doing the same thing with some of the leftover quick curing cement. Here is what mine looked like after curing (the balloon popped probably from the heat).
It was difficult to get the cement to flow through a funnel and into the balloons; definitely a two person job to keep from making a complete mess! After the cement is in the balloon and it it is securely tied you shape it. We were working outside on a cooler day and the cement took several minutes before beginning to thicken. (The last time we worked with the cement it was a fairly hot day and it set much quicker.) Warning: quick set cement gets incredibly hot so be careful when working with it.
After removing the balloon there were some rough spots that I wanted to smooth, the pucker spot where the balloon tied was the biggest one. I used a wire brush and a cuticle stone to smooth and the wire brush left a grey tone.
I gave the cement a scrub with soap and water to remove as much of the grey from the wire brush. Here is what it looks like now:
The pucker where the balloon tied is a little bit smoother and the tiny hole is too. Now I need to figure out where to put it.