Rubber Jar-Lid Opener Prototype

I’m ready to move from rough sketches to a working prototype of a small rubber tool that will make opening stubborn jar lids effortless for everyday household use. The core idea is a palm-sized device that grips the lid firmly, distributes hand pressure evenly, and provides just enough flex to avoid damaging the cap or the user’s wrist.

Here’s what I need from you:

• Industrial-grade 3D design files (STEP or similar) that capture the tool’s ergonomics, grip texture, and optimal rubber durometer.
• Material and manufacturing guidance—recommend an elastomer blend that balances durability with a non-slip feel, and outline a realistic path to low-volume moulding or rapid silicone casting.
• One physical prototype shipped to me for hands-on testing, along with notes on any design tweaks you’d suggest after fabrication.

I’ll supply hand measurements, photos of typical jars, and feedback at every stage. Success is a prototype that comfortably opens standard jar lids (63–110 mm) without tearing or permanent deformation after twenty consecutive uses.

If you’ve previously taken rubber concepts from CAD to functional samples—or you know the nuances of grip geometry and Shore hardness—let’s create a kitchen drawer essential together.

I also need Freelancer to specify the type of materials, for example rubber or other material for the best performance, and to be tested or the real prototype and product.