Modular Rope Clamp SystemBlind

in Industrial Design Services held by ryanf5
TIME REMAINING: 8 days, 4 hours
  • Open
  • Choosing Finalist
  • Ended
Description:
Overview

We are commissioning a new, modern, and modular rope clamp and leash system designed to replace traditional hardware-based rope terminations with a refined, functional, and highly adaptable solution.
The goal is to develop a two-piece clamping system that securely grips rope ends while offering a modular connection interface for a variety of attachments such as clips, carabiners, ID plates, and tracking devices.

Designers will reimagine this everyday piece of hardware into a sleek, durable, and production-ready product suitable for both CNC machining and injection molding.

Winning designers will receive follow on work directly with the company as we continue to build out the modular system. This is intended as an initial design fit assessment and will result in a direct contractual design opportunity for the right designer.

Design Objectives

Create a next-generation rope clamp that:
• Is compact, strong, and minimal in size and form.
• Uses two interlocking halves to compress and secure rope ends.
• Incorporates internal gripping geometry (spikes, teeth, ribs, or equivalent) for maximum holding strength.
• Supports modular attachments through interchangeable connection interfaces.
• Is aesthetically refined, modern, and rugged enough for field or consumer use.

Rope Specifications
• Must accommodate rope diameters from 3/8” (9.5mm) up to 10mm.
• The design should minimize bulk while ensuring strength and secure retention under tension.

Technical & Functional Requirements
• Must pass both static and dynamic load tests suitable for leash and tether applications.
• Compatible with CNC machining (aluminum or titanium) and injection molding (advanced polymer such as PA12, PEEK, or reinforced nylon).
• The clamping mechanism may use:
• Screws (stainless, titanium, or equivalent)
• Tab lock, slide lock, or screw lock (end-cap screws, not standard machine screws)
• Tool-based or toolless methods of secure closure.
• May include magnet-assisted connections for modular accessories or inserts.
• Internal design must securely grip rope without cutting or damaging fibers.
• The design must be modular, allowing optional attachment inserts such as:
• Carabiner or clip connectors.
• Identification plate (dog tag style).
• Housing for Apple AirTag or similar tracker.

Aesthetic Direction

Designs should be:
• Sleek, modern, and rugged.
• Lightweight and functional, with minimal form factor.
• Ergonomically refined with smooth exterior lines.
• Visually consistent with premium outdoor, climbing, or tactical hardware.
• Avoid the look of generic plastic or industrial utility fittings.

Materials & Manufacturing
• Polymers: Engineering-grade thermoplastics suitable for injection molding (glass-reinforced nylon, PA12, PEEK, or similar).
• Metals: CNC-machined aluminum or titanium versions.
• Hardware: Stainless or titanium fasteners; all corrosion-resistant materials.
• Must be designed for efficient mass production, with minimal part count and assembly steps.



Modularity Requirements

The design should support a unified form factor with optional modular accessories such as:
• Carabiner adapters (example: Frog clip style).
• Threaded or magnetic modules for ID or AirTag integration.
• Snap-in or twist-lock modules for alternate leash or tether uses.

Designers are encouraged to explore magnetic or mechanical hybrid locking systems for secure and intuitive attachment.

Submission Requirements
• 3D CAD files: STEP, IGES, or STL format.
• Renderings: At least 3 high-quality renderings from different angles (one exploded view required).
• Short concept description: ≤250 words explaining design logic, materials, and assembly.
• Optional: animation or short video demonstrating modular attachment concept.
Wants:
Evaluation Criteria

Design submissions will be judged based on the following weighted factors:
• Functionality & Strength (30%)
Must securely hold rope under both static and dynamic load conditions. Strength, reliability, and real-world usability are top priorities.
• Modularity & Innovation (25%)
Quality, simplicity, and originality of the modular attachment system. Designs should enable intuitive and secure connection of accessories.
• Aesthetics & Ergonomics (20%)
Clean, modern, and balanced design with attention to form, proportion, and tactile feel. Should look refined and feel purposeful.
• Material & Manufacturing Feasibility (10%)
Must be practical for both CNC machining and injection molding processes. Preference given to efficient geometries and minimal part count.
• Ease of Assembly (10%)
Simple, intuitive assembly with minimal tools or steps required. Toolless or low-tool concepts are encouraged.
• Presentation Quality (5%)
Clarity, completeness, and quality of renderings and CAD models. Submissions should clearly communicate intent and functionality.
Don't Wants:
“What I Don’t Want”

To ensure design focus and manufacturability:
• ❌ No bulky or oversized clamps.
• ❌ No adhesives or friction-only retention systems.
• ❌ No complex multi-part assemblies that complicate production.
• ❌ No sharp edges or visible internal grip elements once assembled.
• ❌ No proprietary or specialty tools required for installation.
• ❌ No designs that risk rope fiber damage or misalignment under load.
Ask for Sample:
Prototype & Sample Conditions (Winning Bid Requirement) • The winning designer must produce or coordinate a functional prototype. • Material: polymer (3D print) or metal (CNC). • Must demonstrate full rope clamping function and at least one modular attachment. • Prototype must be delivered for physical testing and fit evaluation. • Prototype cost can be reimbursed or included in total award value. • Intellectual property and production rights will be negotiated post-selection. Attribution will be given to the designer.

Entries

= Buyer's Rating
#11 Simple clamp by Manp
Hidden design
#9 Clamp Ti consept by Manp
Hidden design
#4 Infinite 8 Rope by atonailtond
#3 ModuClamp by monirh
#2 The Apex production. by atonailtond
#1 Apex Modular Fastening System by atonailtond

Discussion

Sun, 26 Oct 2025 03:37:35 +0000
Hi @ryanf5, Thank you for the contest.

There is something that I want to confirm. Is it correct that you want the accessories such as clips, carabiners, ID plates, and tracking devices, can be attached both on the rope looped back into the clamp, and also can be attached to the clamp itself?
And if we may know, what is the target market for this product?
Thanks

ryanf5

Buyer

Thu, 23 Oct 2025 15:22:27 +0000
I have uploaded two new images of examples of how these clamps will be used in a leash formfactor. the Images are in the attachments labeled IMG_3833 and IMG_3834.

The intent is to find a similar style of clamping the rope so loops and other configurations can be created to secure handles, carabiners and clips, and other modular accessories. You will notice that these examples use the Kong Italy Frog Clamp - Cable version as the carabiner/securing clip.

I would like a clamp module that has quick attach metal connections rather than using the rope looped back into the clamp.

Lastly, I am happy to generate videos of how I currently construct the leashes to demonstrate some of the process and issues I have with making them. For example, the rope clamps I currently use are wither too small or too large in many cases for the rope i use (the rope can vary in diameter depending on the style and manufacturer) and I experience gaps between the clamp holes and the rope which not only looks sloppy but can actually cause injury if you are holding onto it as your skin gets pinched between the rope and clamp.

Please feel free to message with anything you would like clarified. The intent is to maintain the clamshell style clamp that screws or locks onto itself to secure the rope.

atonailtond

Designer

Thu, 23 Oct 2025 14:24:23 +0000
Detailed Product Description: Apex Modular Fastening System (Revised with Load Rating)The Apex Modular Fastening System is a precision-engineered solution that re-imagines rope termination, focusing on fiber safety, manufacturing simplicity, and instant modularity. We have eliminated excessive hardware to deliver a two-piece system that is sleek, durable, and optimized for large-scale production via CNC machining and injection molding.Design Principles and Criteria ComplianceThe Apex design has been rigorously developed to adhere to the highest standards of functionality and manufacturing, avoiding the following pitfalls:Exclusion CriterionApex Design SolutionUser Benefit❌ Bulky/oversized clamps.Low-Profile Design: The two-piece architecture is compact and flush with the rope diameter.Enhanced aesthetics and reduced snagging risk.❌ Adhesives or friction-only retention.Mechanical Compression Fastening: Utilizes an internal wedge or collet mechanism to securely clamp the rope.Unwavering security and reliability under load.❌ Complex multi-part assemblies.Optimized Two-Piece System: Only two main components to simplify assembly and production.Reduced manufacturing cost and time.❌ Sharp edges or visible internal gripping elements.Load Capacity and ReliabilityWhile the Apex System is not marketed as a life-safety or load-rated device, its precision engineering ensures a robust mechanical fastening that far exceeds general-use demands.The internal clamping mechanism is designed to consistently support substantial working loads, ensuring the system meets or exceeds the nominal limit of the 9.5 mm (~⅜") rope, which is rated at 1,200 lb.Estimated Working Load Capacity: 500 – 800 lbThis nominal capacity ensures the Apex is more than adequate for most applications, offering a level of security and reliability comparable to high-quality industrial rope clamps.Essential ComponentsThe system is composed of two essential modules that work in tandem:1.Fastening Module (Apex Clamp): Responsible for the secure termination of the rope end. It is designed to be minimalist and robust, using a mechanical fastening method that does not rely on friction or adhesives. The design is optimized for CNC machining of high-strength metals, ensuring tight tolerances and durability.2.Interface Module (Apex Guide): This piece serves as a rope guide and, more importantly, as the modular platform. It is ideal for injection molding of engineering polymers, allowing for the integration of modular attachment points (like a rail or quick-release slot) directly into the piece, without the need for additional hardware.

ryanf5

Buyer

Thu, 23 Oct 2025 00:39:46 +0000
@nics2 -

No, not specifically, just needs to meet the rated limit of the rope. The rope I use is rated for a tensile strength of 1,200 lb. so I think proceeding with a clamp that could sustain several hundred pounds (say between 500 and 800) would be more than adequate. This is not being marketed as a rated life safety or load rated device, but the rope clamps that it is based off of sart at 500 lb. for the 3/16th version and go up to 3,000 lb. (¾"). We are shooting for a 9.5mm or ~⅜" and that clamp is rated for 1,000 lb.

I&;m not familiar with the Petzl Tibloc de-sheathing incidents you reference, but my intention was to have some sort of penetration into the rope (see attachment pictures - the Nylon rope clamps have spikes that pierce the sheath) to secure it in the clamp. I am looking for something designed to be a bit more secure (more surface contact) or a way of ribbing or creating a more secure contact with the rope. Again, this will not be used for life safety or climbing, but needs to be secure enough to not break or slip if put under a dynamic load (like a 110 lb. dog pulling on it).
Thu, 23 Oct 2025 00:20:03 +0000
Greetings. Are there any strength or compliance requirements? i.e. static/dynamic load max values. Or, is it just supposed to look cool and be able to terminate any type of rope as in the attachments? Furthermore, I feel like your "don&;t wants" are contradictory. Non-friction devices will lead to rope damage under near-failure loads. Similar to Petzl Tibloc de-sheathing incidents.

Lucian

Administrator

Wed, 22 Oct 2025 18:01:19 +0000
Hello everyone,

Please note that submitting design entries that are not related to the contest (e.g., portfolios, web photos, etc.) is not allowed, and they will be removed. All submitted designs must comply with the contest requirements.

Same for any off-topic comments or questions unrelated to the contest. Everything has to be related to the contest, no off-topic or spam.

Our system may automatically suspend accounts if these rules are not followed.

Thanks for understanding!

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