Custom Chrome Rotating Spice Rack ODM Project

Project Overview

Formost is a custom metal display rack and wire-form manufacturer in China, providing OEM and ODM solutions for overseas retail and FMCG brands. In this project, our engineering team reverse-engineered a chrome rotating spice rack for a global spice brand from reference photos only, covering patent review, structure design, bottle-fit validation, chrome plating, SGS compliance, and packaging optimization.

Project Type	Home Organization & Storage — Rotating Spice Rack
Material	Q195 bright drawn steel wire, black acrylic base housing, 304 stainless steel ball bearing
Surface Finish	Nickel plating with chrome topcoat
Structure	Round storage tiers with rotating base, fully assembled (non-KD)
Overall Size	310 mm (H) × Ø 196 mm
Loading Capacity	1.7 kg per rack
Service Scope	Patent review · Reverse engineering · Sample development · Packaging optimization · Mass production · Export documentation

Customer Background

A global spice brand contacted Formost through our website, sourced from their Shanghai purchasing office. The product had previously been manufactured in Malaysia, and the buyer wanted to qualify a Chinese supplier — but provided only product photographs, with no drawings, samples, or detailed specifications to reference.

Given the brand’s premium positioning and tight delivery window, the buyer needed a supplier that could close specification gaps independently rather than wait for repeated clarification cycles.

Customer Requirement

• Develop a rotating spice rack to display and dispense both glass and PET spice bottles.
• Match the brand’s premium quality standards for visual finish, rotation feel, and durability.
• Compress the development timeline and reach production-ready shipment within the buyer’s target window.
• Work from a limited functional brief: the rack had to hold the brand’s plastic and glass spice containers.

Engineering Challenge

This project required Formost to solve specification, structure, and user-experience questions in parallel before sample development could begin.

Requirement Clarification & Feasibility Review

Rather than pause the project to wait for a detailed brief, we treated each missing specification as an engineering question. Formost’s first action was a patent and component availability review across the full assembly.

The product as a whole carried no patent protection. The rotating base, however, was patented — and the patented base matched the reference photo’s dimensions, appearance, and operating motion closely. We located the patent holder and confirmed the patented base was available as a standard supply component.

Engineering Proposal

Structure Design

The overall form — round storage tiers above a rotating base, shipped fully assembled — was guided by the customer’s reference photos, with all internal dimensions engineered by Formost.

Tier spacing: When a product can be lifted straight in and out, Formost’s wire-frame manufacturing experience shows that 1.5–2 mm clearance above the product is enough for easy removal without loose movement. This rule was applied to every tier in this rack.

Tier diameter: PET bottles were slightly larger than the glass version, but their material allowed slight deformation. Through insertion testing, we measured approximately 0.3 mm deformation under normal use, which fixed the final tier diameter.

Bottle retention: Both bottle formats shared a wide base, narrow waist, and shoulder profile. Placing the guard rail above the shoulder helped retain the bottle naturally without additional fixtures.

Tier-to-base joining: We used flange nuts torqued onto threaded studs, then spot-welded for permanence. For this low-load joint, spot welding was sufficient and helped eliminate micro-movement that could affect perceived rotation quality.

Base hardware refinement: We specified a larger ball-bearing diameter and tightened flatness tolerance on the rotating interface to improve perceived rotation quality.

Engineering Drawing Preview

Material Selection

Steel wire: Q195 bright drawn wire was selected for its balance of formability and surface quality in chrome-plated applications.

Base assembly: Black acrylic housing with a 304 stainless steel ball bearing was used for corrosion resistance and consistent rotation feel.

For powder-coated wire products, the coating builds up to roughly 80 μm, so minor surface defects in raw wire are usually hidden. For electroplated products, the plating layer is much thinner — typically around 10 μm for consumer goods — meaning scratches or inclusions in raw wire can remain visible after plating. Bright drawn wire helps reduce these surface defects and supports a cleaner chrome-plated appearance.

Surface Treatment

The rack used nickel plating with chrome topcoat. For spice-adjacent use, the critical compliance item was nickel migration, measured under SGS protocols according to the brand’s specification. All required SGS tests passed on the first submission.

Cost & Packing Optimization

The customer’s priority was end-user experience, so we did not adjust product dimensions only to chase container utilization. Instead, we optimized packing density and set carton count at 9 pcs/ctn, improving container usage without altering the product itself.

Quotation & Confirmation

Before sampling, we confirmed three key points with the buyer: both glass and PET bottle formats would be used, the primary interaction was hand rotation for countertop or shelf access, and the final product should be shipped fully assembled rather than KD packed.

During the program, the quotation model was also reviewed. The project was originally quoted under CIF terms. When US-China tariff exposure changed the buyer’s landed-cost calculation, we restructured the commercial model as EXW + freight after discussion. This helped the buyer manage import-cost exposure under their own customs model without affecting product quality, delivery plan, or Formost’s production margin.

Sample Development

By the time sampling began, the major design decisions had already been resolved during feasibility review. Sampling therefore functioned as a confirmation stage rather than a long iteration loop.

• Rotation feel and noise level at typical hand-spin speed.
• Bottle insertion feel, especially for PET bottles where slight deformation had to be acceptable to the brand team.
• Overall surface finish and chrome appearance.
• Packaging dimensions and carton arrangement.

All key points were approved on the first sample round.

Packaging & Loading Review

The product was designed as a fully assembled rack because the buyer prioritized end-user experience, structural stability, and out-of-box readiness. For this product, KD packaging offered limited benefit beyond freight savings, while assembled shipment better matched the brand’s retail-use expectation.

Through packaging simulation, we set the carton plan at 9 pcs/ctn to improve packing density without compromising product dimensions or customer experience.

Mass Production & Quality Control

The product’s mechanical structure was straightforward after sample approval. Quality control focused on raw wire surface quality, chrome finish appearance, rotation smoothness, bottle-fit consistency, packing arrangement, and SGS-tested material compliance.

Detailed test parameters and audit reports are held under the customer’s compliance agreement.

Why This Matters for Buyers

For a brand qualifying a new supplier, the real risk is not unit price but whether the factory can close specification gaps on its own. In this project, Formost worked from photos only, resolved the patent and bottle-fit questions independently, passed all SGS tests on the first submission, and restructured the commercial terms from CIF to EXW when tariffs shifted the buyer’s landed cost. For overseas buyers, that means fewer clarification cycles, lower compliance risk, and a supplier that protects both product quality and import-cost exposure.

Final Result