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So you’ve got an idea for a new plastic product but you’re not sure where to start and how to move from design to manufacture? Well, that’s where Heyside Group can help with trade moulding solutions. Designing a custom moulded product can feel complex, especially if it’s your first time developing a component for a specialist application. This step-by-step guide walks you through the full process, from concept and material selection to tooling and testing, to help you understand how manufacturers like Heyside turn ideas into production-ready, moulded parts.
For decades, sandbags have been the go-to solution for stabilising temporary barriers, fencing and signage. They’re cheap, familiar and widely available. But as construction, infrastructure and traffic management projects become more regulated, more time-pressured and more safety-critical, the limitations of sandbags are becoming harder to ignore.
Weighted plastic feet are emerging as a smarter alternative – designed specifically for modern site conditions rather than adapted from a general-purpose solution.
At Heyside Group, we work alongside clients to co-create, prototype and manufacture injection moulded products at scale. That hands-on collaboration has given us clear insight into why weighted plastic feet are now outperforming sandbags across the UK.
One of the biggest weaknesses of sandbags is inconsistency.
Weighted plastic feet are engineered to a precise specification. Every unit delivers the same mass, balance and stability – making performance predictable and repeatable across a site.
For traffic management and construction teams, that consistency reduces risk assessments, simplifies planning and improves compliance.
Manual handling is a major concern on active sites. Sandbags are awkward, unstable to lift and prone to tearing – often spilling sand onto walkways and carriageways.
Weighted plastic feet are designed with ergonomics in mind:
The result is fewer injuries during installation and removal, and a safer, tidier environment for both operatives and the public.
Sandbags are often single-use. Once damaged or contaminated, they’re discarded – adding waste and ongoing replacement costs.
Injection moulded weighted feet are built for longevity. They withstand weather, repeated handling and transport, making them a more sustainable and cost-effective solution over time.
This durability aligns with the growing focus on reuse, waste reduction and long-term value across construction and infrastructure sectors.
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Ready to start your project?
Get in touch with Heyside Group to discuss your idea, request a feasibility review,
or explore tooling options tailored to your application.