Should You Buy an Injection Moulding Machine, or Outsource?

What a machine actually costs in Pakistan

Almost nothing is bought new. The market runs on imported second-hand presses, and prices move constantly with the exchange rate, so treat every figure here as a shape rather than a quote.

Small presses (roughly 50-120 tonne). Suitable for caps, small housings, clips, fittings. These are the machines most commonly advertised in Gujranwala and Lahore, and the cheapest entry point into owning.

Mid-range (roughly 150-350 tonne). The workhorse band for housewares, appliance parts, automotive components and mid-size housings. Most engineered parts in Pakistan are moulded here.

Large (450 tonne and above). Crates, bumpers, large panels, big housings. Substantially more expensive to buy, to power and to house, and far harder to keep busy.

Two things buyers consistently underestimate. First, tonnage is chosen by the part, not by the budget — a machine too small physically cannot hold the mould closed and will flash every shot, and a machine much too large wastes energy and is harder to control on small shots. Second, the machine is not the purchase; the mould is a separate cost, and for a first part it is often comparable to the price of a small press.

The costs nobody puts in the quotation

Installation and power. Three-phase supply, cabling, a suitable floor, and space around the machine for the operator, the material and the finished parts. Retrofitting power to a building that does not have it is a genuine project.

Auxiliaries. A press alone does not make parts. You need a chiller or cooling tower, a hopper dryer for hygroscopic materials such as nylon, ABS and polycarbonate, a material loader, a granulator for regrind, an air compressor, and a crane or hoist to change moulds. Together these are a serious fraction of the machine cost and they are routinely left out of the plan.

People. A setter who can hang a mould, dial in a process and troubleshoot short shots and sink marks is a skilled, scarce hire — much scarcer than an operator. This is the single most common reason a bought machine underperforms: the steel arrived and the skill did not.

Electricity. A press is a continuous heavy load: barrel heaters, hydraulics or servo drive, plus the chiller running alongside it. Energy is a large share of moulding cost in Pakistan and it does not scale down when your order book does.

Maintenance and spares. Hydraulic seals, heater bands, thermocouples, screw and barrel wear. Used machines need this sooner. Spares availability is a real reason buyers favour common models over an unusual import, however good the latter looks.

Scrap while you learn. Your first weeks on a new tool produce rejects. An established moulder absorbs that in their yield. You will absorb it in material.

How to work out your own break-even

Do not compare machine price against outsourced part price. Compare total annual cost of owning against total annual cost of buying the parts, and be honest about the middle column.

1. Take your real annual volume

Not your hoped-for volume. The one you actually shipped last year, or the one your customer has committed to in writing.

2. Work out machine hours

Divide annual pieces by cavities per shot to get shots, then multiply by cycle time. A 30-second cycle in a two-cavity tool makes about 240 parts an hour. A quarter of a million parts a year is therefore roughly 1,000 machine hours — well under half a single shift. That is the calculation that stops most purchases, and it is worth doing before anything else.

3. Add every ownership cost

Capital or finance cost, electricity, the setter and operators, maintenance, floor space, auxiliaries, and scrap. Divide by your real annual volume to get a true per-part cost.

4. Compare against a real quote

Get an actual moulding quote for the same part at the same annual volume. Compare like for like, including the tooling, which you pay for either way.

5. Price the risk you are taking on

If the machine breaks, your production stops and you own the problem. If your volume halves, the machine cost does not. If your product changes, the tooling may not fit the press you bought. An outsourced supplier absorbs all three of those.

When buying is genuinely the right call

You have one part, at high volume, for years. A single stable high-runner is the classic case for owning. Predictable load, one setup, no changeovers.

Moulding is on your critical path. If a delay at your moulder stops your assembly line, bringing it in-house buys control that is worth paying for.

Your design is genuinely confidential and you would rather not have it outside your walls, even under an NDA.

You already have the skills. Companies that run other machinery and employ maintenance staff absorb a press far more easily than a company whose first machine it is.

You want to sell moulding capacity too. Some buyers buy a press and fill spare hours with contract work. This works, but it makes you a moulding business, with all that entails.

When outsourcing wins

Several different parts at moderate volume. Changeovers destroy the economics of a single owned press. A contract moulder with a floor of machines absorbs variety as a matter of routine — this is exactly what contract manufacturing exists to do.

Your volume is uncertain or seasonal. Outsourced cost falls when your orders fall. An owned machine's cost does not.

You are still iterating on the design. Buying a press before the design is frozen locks you into a tonnage that may not suit the final part.

You are launching a new product. Get to market on someone else's machine, prove the demand, and decide about steel afterwards. This is the cheapest possible way to be wrong.

You need a range of tonnages. A part family that spans small clips and large housings needs more than one press. Outsourcing gives you every size at once.

If you do buy second-hand, inspect these

Watch it mould a part before you pay. Not a dry cycle with no material — an actual shot. A machine that will not run in front of a buyer has a reason.

Check shot-to-shot consistency. Run twenty shots and weigh the parts. Drifting weights mean a worn screw and barrel or an unstable check ring, which is one of the more expensive repairs.

Inspect the platens and tie bars for wear, scoring or misalignment. Platen or tie-bar damage is a machine-level problem, not a service item.

Test the heater zones. Every zone should reach and hold its setpoint. Dead zones and drifting thermocouples are cheap to fix but tell you how the machine was kept.

Look under it. Hydraulic leaks and a heavily contaminated oil tank are a maintenance history you can read directly.

Ask about spares and manuals. An orphan model with no parts channel becomes an expensive ornament the first time something fails.

Confirm the shot weight and tie-bar spacing suit your mould before, not after. A tool that will not physically fit between the tie bars is a common and entirely avoidable mistake.

A middle path most buyers overlook

You do not have to choose one or the other permanently. Own the tooling, rent the capacity. Pay for your own mould, keep it in your name with the ownership terms written down, and have a contract moulder run it. You get exclusivity over the design and the ability to move if the relationship sours, without buying a press, hiring a setter or paying for idle hours.

This is how most sensible Pakistani product companies operate, and it is the arrangement we default to: the mould is built for the customer, the customer owns it, and production runs on our machines. If volume later grows enough to justify a press of your own, the tool comes with you.

The other staged approach: outsource until one part clearly outgrows the arrangement, then buy a press sized for that one part and keep everything else outsourced. Buying a general-purpose machine for a general-purpose hope is how presses end up idle.

Bottom line

A moulding machine is not expensive because of its price. It is expensive because of everything that has to exist around it — power, auxiliaries, a skilled setter, maintenance, and enough work to keep it busy. Do the machine-hours calculation before you do anything else; it answers the question honestly in about ten minutes.

If you have one big part and the people to run it, buy. If you have several parts, uncertain volume, or no setter, outsource and own your tooling instead. Our machine list and capacity is published if you want to compare against what a floor of presses actually looks like.

Not sure which side of the line you are on? Send us your part and your annual volume and we will tell you plainly — including when the answer is that you would be better off with your own machine.

Frequently asked questions