Stealth Shaft Support Prototype of a Silicone Product Design

Nanci Smith, founder of Nanciland Innovations, partnered with LA NPDT to develop the Stealth Shaft Support.

The idea for this product was born while Nanci was working in adult product retail. As she interacted with customers in that setting, she realized that there was a need for a product to assist people who have difficulty maintaining an erection during sexual intercourse. With the proper silicone product design and development services, Nanci’s product would help many people complete and enjoy sex.

Silicone product design and development are services offered at LA NPDT. To make a silicone rubber prototype, the team created CAD files, then made molds (through 3D printing or CNC machining techniques) for casting silicone.

By pouring liquid silicone into a 3D printed mold, we created prototypes. Through iterations of this process, a safe, user-friendly product was successfully developed.

With these prototypes, Nanci was equipped to seek investors, raising funds to manufacture the product. In addition to silicone product design and development, the team provided packaging design and connected Nanci to a manufacturer.

Mechanical design services at a glance

Scope	Requirements, mechanical CAD, load review, fabrication drawings
Product	Structural shaft support for field installation
Deliverables	3D models, weldments, tolerance drawings, bill of materials
Typical timeline	4-12 weeks

Structural parts fail at the interfaces

A support bracket is rarely defeated by the material — it is defeated by how it mounts, how it is aligned in the field, and what happens when the load is not where the drawing said it would be. We design those interfaces explicitly: fastener access, adjustment range, and tolerance for imperfect installation.

What we delivered

We modeled the assembly around the mounting envelope, reviewed load paths and material sections, and detailed the weldment with tolerances a fabrication shop can hold. The package included a bill of materials and hardware callouts so quoting and building did not require follow-up interpretation.

Frequently asked questions

Do you provide stamped engineering drawings?

We produce the design and analysis and coordinate with a licensed PE when a stamp is required.

Can you design around existing equipment?

Yes. We work from your measurements, scans or CAD of the surrounding assembly.

What files do fabricators receive?

STEP models plus dimensioned drawings with welds, finishes, materials and tolerances.