Print the mold. You can use pretty much any 3D printer large enough to produce the mold. I print with PLA, using the following settings:

• Layer height: .12 mm
• Wall Line Count: 3
• Infill: Gyroid (This offers excellent 3d stiffness, but does increase print time)
• Infill Density: 14
• Top layers: 8
• Bottom layers: 8

Once finished, you can optionally smooth, seal, or coat the inside of the mold to create a smooth finish in the sex toy. More on that in the Asvanced section.

If you want to get casting quickly, you don't have to do any finishing on the mold; you can use it straight off the printer. However, keep in mind the ridges in the mold will create ridges in the finished toy that can trap bacteria. You can easily clean and sanitize silicone sex toys by boiling them.

Mix your silicone. You can do this in any clean container; I find disposable plastic cups are pretty much perfect.

Dragon Skin silicone comes in two parts, one in a blue container and one in a yellow container. Mix it 50:50 blue and yellow by weight or volume. Use two blunt 60ml syringes, one for each part, to draw out the same volume of the blue and yellow parts and mix them in your container.

VERY IMPORTANT: Mix the silicone thoroughly! Make sure you scrape the sides and the entire bottom of your container frequently. Unmixed silicone will create gooey, sticky bits in your finished sex toy that never cure properly.

If you like, you can add color to your silicone when you mix it. I'll talk about that in the Advanced section.

If you want a more attractive finish free from tiny bubbles, you can degas the silicone before you pour it. I'll talk about that in the Advanced section, too. These steps aren't necessary, but they'll make a much prettier result!

Clamp the mold together with C clamps and pour the silicone into the mold. Try to do this smoothly and evenly, without letting the mold get air trapped in it.

Silicone will typically be cured completely in 6-8 hours. Once it cures, you can use a chisel or a butter knife to pry the mold apart. NOTE: Don't put your chisel or knife into the gap and then twist, or you'll risk damaging the mold. Instead, work it back and forth, gently prying the mold apart. You can use a mold release agent to coat the mold to prevent the silicone from sticking, though with PLA molds the silicone doesn't stick much anyway.

And there it is, your first hand-cast sex toy!

Of course, this looks rather plain. Adding color and surface finishing will give you something that looks a lot nicer. But this is a great way to practice printing your mold and mixing and pouring your first sex toy.

You can use cuticle scissors to trim the flash away from the toy. Stretch the flash and clip carefully along the seam where the flash meets the toy.

CARE AND FEEDING: Silicone sex toys made this way with platinum-cure silicone are hypo-allergenic and body-safe. You can clean and sanitize the toy by putting it in boiling water, or using any sex toy cleaner on it. Use water or oil based lube, but avoid silicone-based lube unless you test it first on a discarded bit of silicone; some silicone-based lubes can attack silicone sex toys.