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Alien Intruder Butt Plug

Advanced Hybrid Mold Toy

The bulbous, gnarled tip of the alien tentacle probes gently, seeking entrance... This alien butt plug offers mild stimulation and plenty of comfort for those days you want to be probed by tentacles all day long (and who among us hasn't had days like that?). The downloadable mmodel is an example of a seamless "hybrid" silicone sex toy mold.

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Download - Print - Pour - Enjoy

This butt plug mold is a complex, hybrid glove/3D printed mold that demonstrates advanced techniques for making a seamless sex toy of any shape or complexity.

Two-part molds are simple and easy to make, but they leave a seam down the center of the toy that must carefully be trimmed away. This model allows you to get around this problem by creating a "matrix mold," which is a hybrid of a normal two-part mold and a glove mold. You'll assemble a two-part mold that's a little larger than the sex toy, insert a 3D printed positive of the sex toy, then pour soft 00-20 silicone in the space between. Once it cures, take the outer halves of the mold apart, and peel the silicone glove off the positive.

Turn the glove inside out, spray it with mold release agent, then turn the glove right side in again, place it inside the halves of the outer mold, and pour firm silicone into it. When the silicone sets, remove it and the glove from the mold, peel off the glove, and you'll have a seamless sex toy!

This technique allows you to make extremely sophisticated shapes, including shapes with undercuts, without seams on the finished piece.

If you're making your own models for sex toys in a 3D modeling program, you'll start by creating your sex toy design. When you're happy with it, create a copy of it, offset the copy by about 4mm or so (so that it expands uniformly in all directions), then do a Boolean subtraction of the copy from a block to make your outer mold. Attach a base to the original sex toy design that fits over the mold, with pins to hold it centered. Then print the mold and the original with base to create your hybrid mold.

What You’ll Need



By downloading mold files from this site, you agree to the following terms:

The mold files and sex toy designs are protected by copyright. You may use the files to print a mold on a 3D printer. You may use the molds to cast sex toys for your own personal use, You may not:

  • Sell, give away, or otherwise transfer the mold files to anyone else
  • Use the molds to make sex toys for sale to others
  • Use the molds to make sex toys to give away to others in combination with sale of another product
  • Reverse engineer the sex toy designs for sale, or to create derivative molds or designs for sale
Basically, don't be a dick. Don't try to make money from the work I did. If you like these designs and you want to sell them or adapt them for sale, contact me! We'll work something out.