Shield Works Lion Mark
Phase 1, Engineering Validation

A Proposal for Nussbaum22

Table Edge Phone Pouch

4–5 Weeks
USD 5,000
Scope & Fee Firm
01 — Background

Background

Nussbaum22, LLC is a United States product company founded by Aidan Nussbaum, based in California. The product is the Table Edge Phone Pouch, a portable holder that attaches to the edge or underside of a dining table, bar counter or desk and holds a smartphone temporarily out of the way but still within reach.

The idea comes from a specific social observation: phones sit on restaurant tables and get in the way of the meal. The product gives the phone somewhere discreet to go without the owner having to put it in a pocket or a bag. The commercial target is the premium end of the market rather than a low cost accessory.

The defining constraint is that the product must attach and detach without screws, adhesive, permanent fixings or any damage to the furniture. It also has to be durable, as small and light as possible, ideally fold flat for carrying, and hold current phone sizes without the customer needing to select a variant. The materials under consideration are silicone, plastic, leather and technical textiles, and the direction is open to our recommendation.

The project is at concept stage. Nussbaum22 has supplied two concept boards setting out four different attachment approaches, along with material and dimensional annotations. There are no engineering files, no CAD, and no physical prototype. Aidan has met patent attorneys and is considering filings. This is his first product development project and he has confirmed development funding is in place.

This proposal covers the first stage of the program, Phase 1, Engineering Validation, following the recent discovery call with our President and Founder, Nick Cunningham. Work proceeds under the non-disclosure agreement already in place through our project intake form, with confidentiality agreements covering any third-party supplier engaged before that engagement begins.

02 — Preliminary Read

Our Preliminary Read on the Product

Ahead of any Phase 1 engagement our team has reviewed the enquiry, the intake form, the discovery call notes and both concept boards. The following is not the Phase 1 output. It is the position our engineering work starts from, set out so you can see we have engaged with the actual product rather than sent a generic scope.

2.1 The central technical question: how the product holds on

Everything about this product depends on one thing. A passive attachment has to carry a loaded pouch off the edge of a table it was never designed for, hold it reliably through a meal, then release without leaving a mark. Ruling out screws and adhesive means the attachment must generate all of its holding force from geometry, friction, spring force or mass alone. That single decision drives the tooling, the unit cost, the durability and whether the product actually works in a restaurant.

The load itself is modest. A current smartphone is roughly 150g to 250g. The difficulty is that the load hangs below the table surface on a moment arm, which turns a small weight into a real rotational force concentrated at the contact point. The attachment has to hold that force across an unknown range of table thicknesses and edge profiles, on surfaces ranging from oiled oak to laminate to stone, without marking any of them.

Those requirements pull against each other, and that tension is the engineering problem. More clamping force means better grip and higher risk of marking a finished table. A wider table thickness range means a longer clip or more built-in compliance, which means more material and a larger folded footprint. Softer contact materials protect the furniture and reduce the friction available to hold the load. Resolving these trade-offs deliberately, rather than discovering them at tooling stage, is what Phase 1 is for.

The biggest commercial risk at this stage is not manufacturing cost. It is investing in tooling around an attachment concept that later proves incompatible with real-world tables. Tooling is the point at which a wrong decision stops costing a conversation and starts costing money already spent, and it is difficult to unwind. The purpose of doing this work first, and doing it now, is to take that decision on engineering evidence while taking it is still cheap.

2.2 The target sell price, and why we need it before we start

The most useful commercial input you can give us, and the one that changes the engineering most, is the price the product is intended to sell at. Designing to a cost is a day one input, not something assessed once the design is fixed. This was raised on the discovery call and it remains the one significant open item on the brief.

It matters because on a product of this type the sell price does not simply set the margin. It sets the specification. The attachment mechanism, the material set, the part count and the tooling commitment all move together with it. A lower sell price forces a lean design: one moulded or formed attachment component, a simple pouch, low part count and tooling kept tight. A higher sell price pays for a more capable attachment such as a sprung or adjustable mechanism, a premium material set such as full grain leather with a machined or plated metal component, and the higher assembly content that comes with them.

Those are not the same product at different margins. They are different engineering briefs, and they lead to different tooling. Committing to the wrong one is expensive to correct once tooling is cut.

We are deliberately not proposing a sell price on your behalf. Establishing what this product can command is a market question for your side, informed by the categories it will sit alongside and the channel you intend to sell through, and any figure we offered ahead of that work would be a guess dressed up as experience. What we need from you is your working number, or a bracket, and the reasoning behind it. Phase 1 can proceed without it and the Indicative Quotation will still establish the cost trajectory either way, but every engineering decision inside the phase is better for having it.

2.3 Four attachment concepts, one product

The concept boards set out four attachment routes: an over-the-edge clip, a counterweight sleeve that rests on the tabletop, a spring clamp, and a friction wedge that slides into the gap beneath the tabletop. They are presented as variations of one product. In engineering terms they are four different mechanisms with four different sets of physics, failure modes, part counts, tooling requirements and unit costs.

Our early read on each, to be tested properly in Phase 1:

  • Over-the-edge clip. Holds through geometry and friction. Lowest part count and the cheapest to tool, and the most likely to fold flat cleanly. Its weakness is that grip is largely set by how well the clip fits a given table thickness, so the compatibility range has to be engineered in rather than assumed.
  • Counterweight sleeve. Needs no grip at all, so it works on almost any surface and thickness and carries the lowest risk of marking furniture. The trade-off is that the mass which makes it work is mass the customer carries every day, and it sets a floor on both weight and cost.
  • Spring clamp. The strongest and most adjustable hold, and the most tolerant of thick tables. It also introduces a sprung metal component, a higher part count, a moving assembly to validate for life cycle, and the highest risk of marking a polished surface.
  • Friction wedge. Slimmest profile and no visible hardware above the table. It depends entirely on there being a suitable gap or apron beneath the tabletop, which a significant share of tables do not have. Compatibility is the open question rather than the mechanism.

Converging on one mechanism, or making a deliberate commercial decision to carry two, is the first real engineering job on this project. Carrying more than one to production multiplies tooling, so this decision has direct cost consequences.

One point of clarity on the concept boards. The dimensions, table thickness limits and gap ranges annotated on them read as illustrative rather than engineering-derived. Phase 1 establishes the real figures against measured furniture data and the selected mechanism, and those become the specification.

2.4 The pouch, the materials and the join

The product is a hybrid. A soft pouch in leather, canvas, felt or a technical textile, joined to a rigid, sprung or weighted attachment component in plastic, metal or silicone. These are two different manufacturing routes with two different supply chains, and the join between them is a durability point that deserves specific attention. On a product that is opened, loaded, unloaded and folded every day, the interface between soft and rigid parts is a common early failure point.

Material selection also carries a commercial dimension beyond cost. The intended positioning is premium, and on a product this small the perceived quality comes almost entirely from the material and the finish. Leather changes the tooling picture materially, since a leather or textile route may need little or no hard tooling on the pouch itself, while a moulded silicone or plastic pouch does. As part of Phase 1 we can send physical material swatches so the options can be judged in the hand rather than on screen.

2.5 One size fits all

Two of the stated requirements sit in tension: hold every current phone size without variants, and be as small and light as possible. Current phones span a meaningful range in width and thickness, and a pouch sized for the largest of them is oversized for the smallest. There are established ways to bridge that gap, including elastic retention, a tapered envelope or a compliant liner, each with a cost and a bulk consequence. Phase 1 defines the target envelope against a confirmed phone size range instead of designing for an open-ended one, and it sets that envelope against the target sell price rather than in isolation from it.

03 — Volume & Timeline

Volume and Timeline Targets

Prototype Quantity1 unit stated at intake. Prototype rounds and quantities are confirmed in the Development Roadmap
First Production Run100 units stated at intake. To be sized against the USD 10,000 minimum order value once unit cost is established through Phase 1
Annual Volume Forecast1,000 units
Target Unit PriceTo be confirmed. Established through the Phase 1 Indicative Quotation and set against your target sell price
Target TimelineNot specified at intake. Confirmed in the Development Roadmap
Target MarketUnited States
Funding StatusSecured

Note on the first production run. A first run of 100 units will not reach the USD 10,000 minimum order value at any realistic unit cost for this product. That is not a problem to solve now, because the unit cost is not yet known. It is flagged here so the first order can be sized correctly once the Phase 1 Indicative Quotation gives you a real number to plan against.

04 — Phase 1 Validation

Phase 1, Engineering Validation

Phase 1 is the first engineering stage of development, not preparation for it. Its purpose is to answer the critical engineering questions at the point where answering them is cheap, before design, tooling and production are committed.

By the conclusion of Phase 1 you will have a selected attachment mechanism supported by engineering reasoning, a confirmed material and construction route, a defined manufacturing strategy, an assessed risk position, indicative unit costs at volume, and a costed stage-by-stage plan for the rest of the development. The fee covers the six deliverables below, which together form the technical foundation for the Route to Market Plan.

01
Engineering Kick-off Workshop.
A working technical session with the Shield Works R&D team, led by our Head of R&D, not an introductory call. We work through the concept boards, the four attachment routes, the target sell price and the unit cost target it implies, the phone size range, the furniture types the product has to work on and your material preferences, then agree the engineering workstreams and priorities before any work begins.
02
Design Feasibility Assessment.
No CAD or engineering files exist, so this deliverable establishes the first manufacturable engineering baseline rather than auditing an existing one. Written, annotated assessment of the concept material covering the product architecture, the pouch envelope and retention approach, the attachment interface, and the dimensional and compatibility claims carried on the concept boards. Output: annotated engineering commentary, a defined product envelope, and a ranked list of design decisions that need to be taken.
03
Attachment Mechanism Selection and Load Study.
The dedicated engineering workstream on the central technical question, and the core of this engagement. The four candidate mechanisms are assessed against a defined load case, covering the holding force required at the moment arm created by a loaded pouch, the table thickness and edge profile range each mechanism can serve, contact pressure and the risk of marking finished furniture, folded size and weight, part count, life cycle and expected failure mode. Output: a ranked mechanism recommendation with the engineering reasoning behind it, the defined table compatibility range for the recommended route, and the design consequences that follow from the choice.
04
Preliminary DFM, DFA and DFX Engineering Assessment.
Written assessment covering the moulding, forming or fabrication strategy for the attachment component and the tooling direction it implies, the construction route for the soft pouch, the join between soft and rigid parts, material and finish selection against the premium positioning, the phone size accommodation strategy, relevant United States consumer product and material considerations including labelling, and a structured risk register with mitigations. Preliminary at this stage, assessed against analysis and supplier data. Full DFM execution, engineering drawing release and supplier qualification testing sit in the next phase.
05
Supplier Engineering Shortlist and Indicative Quotation.
Qualified supplier shortlist drawn from the Shield Works supply chain and wider verified network across the relevant routes, whether injection moulding, metal forming, silicone, leather goods or technical textiles, with first-round engineering engagement to confirm capability and capacity. Indicative unit pricing at multiple volume tiers, with indicative prototyping and tooling direction. Accuracy is subject to the defined level of readiness for manufacture. Final unit costs are locked against specific supplier quotes as the next phase progresses.
06
Development Roadmap, the full Route to Market Plan.
The consolidating document that carries the Phase 1 engineering output forward into design release, prototyping, tooling, pilot and qualified production. This is the full Route to Market Plan for the Table Edge Phone Pouch, with stage timelines, stage costs, Shield Works resource allocation, component level bill of materials, tooling strategy, prototyping plan, packaging direction and risk register. This is where the numbers discussed on the call become firm, costed stages you can decide on.

Fee: USD 5,000, payable in full on project confirmation.

05 — Path Beyond Phase 1

The Path Beyond Phase 1

Phase 1 ends with a costed, stage-by-stage development plan in the Development Roadmap. The outline below is the shape of that path, so you can see where Phase 1 leads before you commit to it. The firm timings and costs for each stage are produced inside the Roadmap itself, once the attachment mechanism and materials are settled and the supply base has been engaged. We are deliberately not putting figures against these stages here, because a number produced before the mechanism is chosen would be a guess rather than a quotation, and it would not be useful to you.

From Phase 1, the likely sequence is engineering design and CAD release in the selected mechanism, then a first physical prototype close to the finished product, then a probable one to two iterations once you have a sample in your hands and can judge it against real tables and real use. Tooling follows only if the design proves out, and tooling is customer owned once paid, per your specification. A production sample off tool comes next, then a first production run sized to establish real unit economics.

Two sequencing points are worth stating plainly. The tooling decision follows the prototype rather than preceding it, so you are never asked to commit to a mould before you have held the product. And prototyping is an engineering stage with its own cost, covering design work, sample builds, iteration and shipping, rather than a per-sample charge. The Roadmap sets out that cost in full so there are no surprises.

5.1 Preliminary risk register

RiskLikelihoodImpactPrimary Mitigation
Passive attachment cannot hold a loaded pouch reliably across the range of tables encountered in real useMediumHighAttachment Mechanism Selection and Load Study is the priority Phase 1 workstream. The prototype tests the mechanism physically before any tooling is committed
Attachment marks, dents or scratches a finished table surfaceMediumHighContact material and pressure distribution assessed in Phase 1. On restaurant and domestic furniture this is a product level risk, not a cosmetic one, and it is treated as such
Holding every current phone size without variants conflicts with the small folded size and low weight targetsMediumMediumProduct envelope defined against a confirmed phone size range in the DFX assessment, with retention options assessed for cost and bulk
Unit cost lands above the price the product can carry at premium retailMediumMediumIndicative Quotation establishes the real cost trajectory and the volume and material levers. Design to cost applied from the Kick-off once a target sell price is confirmed
Carrying more than one attachment mechanism through to production multiplies tooling costMediumMediumPhase 1 converges on a single mechanism unless a second is commercially justified on the evidence
The join between the soft pouch and the rigid attachment becomes an early field failure pointMediumMediumInterface design and construction route assessed as a named item in the DFM and DFA assessment
No CAD or physical prototype exists, so the engineering baseline has to be created from concept materialHighLowDesign Feasibility Assessment is a named Phase 1 deliverable and establishes that baseline
06 — Exclusions

Exclusions

The Phase 1 fee covers all six deliverables in Section 4. The activities below sit outside this engagement. Where they are needed, they are scoped and costed within the Development Roadmap, or coordinated through approved external partners. Sequencing the work this way keeps unnecessary cost out of the early stages and avoids committing to downstream tooling and production before the fundamental technical questions are resolved.

  • Industrial design refinement and 3D CAD development work beyond the Design Feasibility Assessment.
  • Full DFM execution, engineering drawing release and supplier qualification testing.
  • Prototyping, sampling and physical testing.
  • Tooling and mould costs. Tooling is customer owned once paid, per your specification.
  • Consumer product and material compliance test lab fees. Pathway guidance is included; execution is routed through external partners and quoted separately.
  • Shipping of physical samples, material swatches and prototypes between China and the United States.
  • Patent, trademark and utility model filing fees, and any attorney costs. Guidance is included; filing costs are separate and are paid by you directly.
  • Packaging design and print origination beyond the direction set in the Development Roadmap.
  • Production unit costs for the first production run and beyond.

Note on the model after Phase 1. Once a supplier set is confirmed and production begins, C2W and Shield Works operate as your manufacturing partner. You receive a single unit cost per unit that covers goods, quality control, supplier management, packaging and logistics coordination. These are not billed as separate service fees. The Phase 1 Supplier Engineering Shortlist and Indicative Quotation is designed to establish those unit costs with confidence before any production commitment is made.

07 — Payment Terms

Payment Terms

Engagement Fee
USD 5,000
payable in full on project confirmation
StageFeePayment Trigger
Phase 1, Engineering ValidationUSD 5,000Payable in full on project confirmation

Costs for the stages that follow Phase 1 are set out in the Development Roadmap delivered at the end of Phase 1, for your approval before any further commitment.

08 — Safeguards

Safeguards and Clarifications

Provisional status.
The Phase 1 scope and fee are firm. The costed, stage-by-stage development plan is produced through the Phase 1 work and delivered in the Development Roadmap. The Engineering Kick-off Workshop is where the Shield Works R&D team aligns the work against the real technical priorities, principally the attachment mechanism decision, before engineering work begins.
The attachment mechanism.
Phase 1 treats mechanism selection as the priority deliverable. We will not represent any one of the four routes as proven before the engineering work is done, and we will tell you plainly if the evidence points away from the concept you favour. The purpose of doing this work first is that changing mechanism at this stage costs a conversation, whereas changing it after tooling costs the tooling.
Concept board figures.
The dimensions, table thickness limits and gap ranges shown on the supplied concept boards are treated as illustrative. Phase 1 establishes the engineering figures, and those figures become the specification. Where a stated claim on the boards proves unachievable, we will say so and explain why.
No electronic content.
The product is understood to carry no electronics, battery or firmware content. Phase 1 is scoped and priced on that basis. If electronic functionality is added later, it is scoped separately.
Designing to a cost.
As set out in Section 2.2, the target sell price is the commercial input that shapes the engineering most, and we would ask for your working number, or a bracket, before the Kick-off. Phase 1 can proceed without it and the Indicative Quotation will still establish the cost trajectory, but the design decisions taken inside the phase are materially better for having it.
Scope changes.
If requirements change materially during Phase 1, for example a decision to carry two attachment mechanisms forward in parallel, or a significant change to target volumes, we will flag this to you and agree any adjustment to cost and timeline before proceeding.
Quotation accuracy.
The Indicative Quotation delivered in Phase 1 is subject to the level of readiness for manufacture. Final pricing is locked against specific supplier quotes and refined as development progresses.
Manufacturing routes.
Injection moulding, metal fabrication, precision assembly, quality control and packaging are delivered in house at our Shield Works facility in Zhuhai. Soft goods manufacture, including leather goods and technical textiles, and specialist processes such as silicone moulding, are delivered through the Shield Works verified partner network with Shield Works as prime contractor and single point of accountability. You deal with one commercial counterparty for the whole supply, and we own the supplier relationships and their management.
Intellectual property.
You retain all intellectual property in the product, including the design, and in any derivative work produced under our engagement. Shield Works retains only its own background intellectual property and operates within an IP-secure, ISO-certified facility. Work proceeds under the non-disclosure agreement already in place through our intake form, with confidentiality agreements covering all third-party suppliers before any external engagement begins. General guidance on protection strategy, including trademark, early filing and the option of a China filing, is included in the engagement. We are not attorneys and we do not give legal advice, and all filing and attorney fees are paid by you directly.
Timelines.
The 4 to 5 working week Phase 1 estimate assumes reasonable availability for the Engineering Kick-off Workshop and for follow-up technical discussions.
09 — Why C2W & Shield Works

Why C2W and Shield Works

Shield Works combines product engineering, manufacturing engineering and China based execution within a single development program, integrated from the outset rather than run as a series of handoffs between separate suppliers.

A full-time dedicated project manager at our China headquarters coordinating all suppliers, engineering resources and your team, so you always know who is making what and where.
In-house R&D, mechanical engineering, DFM and DFX, and quality control, led by a mechanical engineer CEO with over 27 years of manufacturing experience and a Head of R&D with an aerospace engineering background.
Over 21 years delivering consumer products out of China, with more than 20,000 projects completed and an established supply chain across injection moulding, metal forming, silicone, soft goods and assembly.
An IP-secure, ISO-certified manufacturing facility in Zhuhai for production, precision assembly, quality control, packaging and warehousing.
Direct experience taking first-time founders from a concept sketch through to shipped product, including the commercial decisions along the way, not only the engineering ones.
A single commercial counterparty, transparent factory selection and direct supplier relationships. No hidden middlemen, no opaque quotes and no surprises on quality.
10 — Next Steps

Next Steps

01
Nussbaum22 reviews this proposal and confirms acceptance of the Phase 1 scope and fee. Any questions on scope or sequence can be raised by email beforehand.
02
C2W issues an invoice for USD 5,000.
03
On receipt of payment, the concept boards and all supporting material are formally shared with the Shield Works R&D team.
04
We schedule the Engineering Kick-off Workshop with the Shield Works R&D team. This sets the engineering priorities: the attachment mechanism decision, the target sell price and the cost target it sets, the load case and table compatibility range, the phone size envelope, and the material and construction route.
05
Phase 1 output, including the Development Roadmap, is delivered within approximately 4 to 5 working weeks of the Engineering Kick-off Workshop, with costs and timelines for the full development program for your approval.

This proposal is non-binding at this stage and is intended to give you clarity on cost, structure and what Phase 1 will actually produce. If you are happy with the direction, let us know and we will issue the invoice and get the Engineering Kick-off Workshop scheduled.

We look forward to helping Nussbaum22 take the Table Edge Phone Pouch from concept to a proven, manufacturable product.

Warm regards,

Mark Jacobs

CEO, C2W Group / Shield Works

July 2026