I used this to fabricate a series of urns based off Google searches entitled recollections. Here's a video of the process in case you wanted to see:
Step 1: Getting Started
You should also be familiar with pottery terms like throwing and centering and pottery tools like ribs and needle tools.
For this you will need:
-potters tools: rib, sponge, needle tool
-plexiglass at least 1/8" thick, 1/4" preferably
-bucket of water
Step 2: Making the Template (Profile in Plexi)
For this shape, I used Adobe Illustrator to create a file that I sent to be laser cut. I've attached the file but make sure that your strokes and colors match whatever the settings are for laser cutter you end up using.
Alternately though, you can simply sketch or draw onto a sheet of acrylic plexiglass and cut that using some sort of saw. I like to use this method when I'm cutting a profile in plexi for using on the plaster wheel. I will first sketch the shape, then cut it out using a band saw. I can go in with different grit sandpapers to then smooth out the shape.
Step 3: Centering
If you don't know how to make a cylinder, I'll start with centering. In this step, you want to cone your clay up with your two hands, then press down on the cone with your right, then cone up the clay again. You're going to repeat this pattern of cone up, press down until your clay is centered. Remember to clean off any slurry with a rib or sponge.
Step 4: Compressing
Then pull out from that center point towards 6 o'clock. Use your fingers to compress the clay along the bottom to make sure that there are no air bubbles and the particles are aligned. Don't forget to clean off the slurry here as well with either a rib or a sponge.
Step 5: Pulling a Wall
Continue this cycle to pull your wall up.
Step 6: Using the Plexi
Once your cylinder is the desired height, begin to press slightly into the clay. You will need to make sure that there is nothing obstructing the plexi on the wheelhead. This is to make sure you can rest the plexi slightly on the wheelhead to ensure the form is properly at a right angle. Make sure there is plenty of water on the wheelhead so that the plexi can glide along.
Press slightly in with the plexi while pressing on the inside of the form. Clay will begin to scrape off. Ease off of the wheel and remove the plexi slowly. The more you ease, the less chancees there are of denting the wet clay with the hard plexi. Scrape off the clay that has built up on the plexi.
Continue to do this until you have achieved the form. Make sure you are always supporting the pressure on the outside with pressure on the inside. Also make sure that you are not throwing your form off center.
Step 7: Finishing Up
You can see here what the form looks like once it's done. You can do it too!!!!!!