Olifant: Neoprene Trunk Hose

The second batch of black neoprene arrived safely, and so I proceeded to build the plaster mold.


First I softened plasticine in the microwave, then built it up around my model. I leveled it out right at midline, and I poured the first half of the mold in plaster.

After curing I removed the plasticine and poured the second half. After letting the mold halves dry for a couple of days I held them together with large rubber bands, and filled the cavity with the liquid neoprene. The plaster absorbed moisture from the rubber and a thin wall of solid material built up.

I emptied out the liquid neoprene and let the casting dry overnight before removing it from the mold. Here I am preparing for the final assembly, with the neoprene hose connecting the leather mask and the pressure gauge.

Olifant Update

I've finished the ears and attached the tusk canisters to the Olifant mask. I've been waiting for my order of custom tinted black neoprene to arrive, only to find out that after traveling across the country the pails began to leak, and FedEx refused to deliver them. So now I'm awaiting the arrival of the new shipment, at which time I will cast the trunk hose.

Olifant: Trunk Fabrication

Pachydermos' trunk was a commercial vacuum cleaner hose that I covered in lambskin wrapped with waxed thread. I like it a lot, but I was thinking how cool it would be if I could build the trunk from scratch. I've decided that neoprene would be an ideal material to make a corrugated hose from (needed for the trunk to bend smoothly), and that is a material I can buy and cast into a plaster mold.

I thought and thought about how to make a steamy corrugated hose, and didn't really come up with much that would still allow it to bend easily, so I decided to put more emphasis on it graduating from a larger diameter to a smaller. After some experimenting I came up with the model above built from laser cut acrylic sheet mounted on a bolt.

To smooth out the surface and to fill in the cracks I've coated it with urethane resin, letting it build up in the recesses.

Over that I've brushed a layer of casting latex, which will make it easier to free from the rigid plaster mold, because it will have a little give.

And here I've started laying plasticine against the bottom half of the model to form one of the two mold halves. Next step will be to pour plaster over the top half.

Pachyderm: Covering the Trunk Hose

To Elizabethan costumers, trunk hose means something totally different. Here it refers to the part of the steampunk gas mask which resembles an elephant's trunk, and consists of a vacuum cleaner hose covered with leather. The top picture shows the before and after. I chose lambskin for the leather as it is very fine, and conforms readily to what it's wrapped around. I put the suede side showing, as it seemed more 19th century to me. The leather was stitched onto the hose, then wrapped along its length with waxed thread. One end of the hose will attach to the leather mask, and the other to a pressure gauge.

Pachyderm Leather Trunk Stitching

This is the back view of the folded over leather upper trunk, showing the hand-stitching.

The Leather Upper Trunk

Here is what the upper leather trunk looks like. The eye openings will have lenses and steampunk surrounds. Notice the worn appearance of the leather finish, and the ventilation holes for breathing. The leather folded back over itself was inspired by Chinese paper masks.