Nothing is more embarrassing than getting to the end of a letter and realizing that you don't have a good wax seal for the envelope. With a couple of easy steps, a 3d printer, a kiln, and a spin caster, you can have a signet ring in no time.
Submitted by Milwaukee Makerspace for the Instructables Sponsorship Program
Step 1: Design the Ring
Using Sketchup or openScad, or your favorite cad design program design a ring. Below is a question block ring I designed using Sketchup. Also attached is an openScad ring designer I am working on. Whatever you want to design is up to you.
If you use Sketchup, there is a variety of plugins you can get to take your design from .skp to .stl. I found one from the makerbot website, and it worked great.
Step 2: Print the Ring
I used a makerbot replicator to print out the rings. From stl file to print is as easy as opening the stl in replicatorG. From there to SD card, it was easy enough to get the printer going. I printed these rings in ABS plastic.
Step 3: Pack the Ring in Investment
After you have your companion cube ring printed out, the next step is to put it on a wax sprue and then mix the investment and pour it over the ring. Unfortunately, I forgot to take a picture of this step, and all I could find was a picture of the side of the cylinder. Inside this cylinder is a ring suspended on a wax stick. I then mixed the investment plaster and poured it over the ring. This dries overnight and sets up inside the cylinder.