Frequently Asked Questions

If you have any questions or concerns, please feel free to get in touch 01452 386608

Tools & Moulds

What are the benefits to my production programme by moulding in the UK?

In the past the Far East was utilised as a production solution, almost without question and was a recognised source of a ‘cheap’ manufacturing for many businesses. 

In recent years, the fluctuating economy and uncertainties associated pre and post-Brexit marked the start of a change in attitude towards overseas manufacturing as bit by bit it no longer seems such a financial slam dunk to have production carried out in the Far East.

more info

I want to bring production back to the UK so should I re-shore or re-tool?

Many companies have had to reconsider manufacturing options this last year as a result of global supply chains breaking down due to the pandemic.

more info

Need T1 Samples in 15 days?

When evaluating new designs there are some instances when the production intent material is a ‘must have’. Injection moulding is a potential solution if we tailor the type of tooling to the application.

more info

What are my Tooling options?

Long gone are the days when the only tooling option was to use steel! These days, a wide variety of materials are used, from SLA resins such as Perform, to silicone, epoxies, aluminium and steel. 

more info

My prototype must be in the production intent material (ABS, PC, PA, PP etc). What are my options?

The short answer is you have to make a mould tool. However this needs qualifying, as today processes such as SLS use nylon (PA) as their standard material. FDM works with ABS, ABS/PC, PC, Ultem and PPS. These techniques, whilst getting much closer to the production material, do not allow for a particular grade to be chosen and are still subject to some optimisation for the process.

more info

Development, Prototype and Bridge Tooling - what do I need to know?

Such terms are usually used to refer to injection mould tooling, but are equally relevant to other processes such as metal forming or blow moulding - typically any process where high production tooling costs exist and there is a need for truly representative prototypes.

more info

What if Vacuum Casting was called 3D Printing?

In all the publicity associated with 3D printing, we hear so little about vacuum casting.

Is this because it’s not as ‘sexy’, or perhaps its because you can’t do it sat in front of a computer, or maybe its just been there for so many decades that no one is interested?

more info

How can Moldflow analysis help your Product Development?

Moldflow software allows the flow of plastic inside a mould tool during the injection moulding process to be analysed. The 3D CAD data generated during the design process can be used directly to determine the manufacturability of the part.

more info

How is Low Volume Production (LVP) tooling different from development or production tooling?

Mould tool options which give flexibility for time versus cost......

more info

Bridge Tooling – what is it and when should I use it?

Bridge Tooling can also be known as development tooling or rapid tooling, and defines a stage in development where there is a need for moulded parts but production tooling is unavailable. Its name coming from the fact that it forms a bridge between prototyping and production.

more info

Is Aluminium Tooling a friend or a foe?

There are many applications that require production material parts, early in the development cycle. This could be for mechanical properties, chemical resistance, temperature capability to name but a few. 

The issue then becomes one of how to ‘control’ the lead time associated with the mould tooling and try to short cut both the time and cost associated with conventional production tooling.

At Plunkett Associates we try to understand exactly what the driver behind the requirement is, so that we can tailor the solution rather than apply a one size fits all strategy.

Aluminium can offer significant advantages in this environment when specified correctly but is far from a panacea and recognising its drawbacks is very important.

more info

How many parts can I expect from an aluminium tool?

The two big factors here are the grade of aluminium used for the tooling and the material being moulded.

more info

Should Aluminium be considered as a tooling material?

We believe aluminium tooling offers significant benefits in the right applications:

  1. Being a softer metal, it is faster to machine. This can have price benefits and result in faster delivery times.
  2. Aluminium has a better thermal conductivity than steel, with the potential therefore to offer reduced cycle times.
  3. For high gloss finishes, it can be polished about 30% faster.
more info

Custom enclosures - what can you offer?

It’s often a race against time to get enclosures for new products designed and manufactured. Waiting until electronics and internal workings are finalised can leave you very short on time, but the good news is, there are lots of options and Plunkett Associates is here to help.

more info

What are my options for low volume batch production runs?

Whilst many companies view low quantities as a nuisance, they represent our staple diet! 

more info

What are the advantages and disadvantages of injection moulding?

Injection moulding is one of the most commonly used methods of producing identical plastic products in high volumes. 

more info

Is Short Run Injection Moulding Expensive?

We are surrounded by injection moulded parts in every facet of our lives, from light switches to the electric kettles we use to the keys on our keyboards. The one thing all these items have in common is that they are produced in high numbers, frequently hundreds of thousands upwards.

more info

How do I design plastic parts for injection moulding?

Part Design is the key to success and our top tip is “KEEP IT SIMPLE”. 

more info

What methods can I use to produce plastic prototype and production parts?

From 3D Printing to CNC Machining, Vacuum Casting to Injection Moulding, the process options for plastic parts are limitless. Transitioning from prototyping to production can be a challenge, and it may be worth considering the long term requirements (if you know them) first.

more info

Injection Moulding or Vacuum Casting. Which one should I use?

Injection moulding is often dismissed as being too expensive, requiring long lead times and being inflexible, but that's not always the case. We take a look at some of the advantages the technology offers with a real case that proves that is not always the case.

more info

What are the smallest sized parts I can have by injection moulding?

The newest addition to our moulding family is a Baby! Our Babyplast is perfect for micro injection moulding.

more info