Shapeways FAQ: What I Tell Clients About 3D Printing, Stores, and Custom Manufacturing

I coordinate production for a product development studio, which usually means my day includes at least one “how fast can we realistically get this?” conversation. Over the last eight years, I’ve placed more than 200 custom parts orders, including 48-hour turnarounds for clients who had left themselves no room for error.

Shapeways comes up in those conversations a lot. The questions are almost always the same: Is it still only 3D printing? What do all those machine specs mean? Can laser cutting really be used for aerospace parts? So here is the version I recite when the clock is running.

If you’re in a hurry, start with the question that matches your problem.

• Is Shapeways just a 3D printing service?
• What does a 33 ton all-electric injection molding machine mean?
• Can laser cutting make aerospace parts?
• How to print large models on small 3D printers
• Why set up a Shapeways store?
• When is paying for a rush order a good idea?

Is Shapeways just a 3D printing service?

The short answer is no. 3D printing is the company’s best-known capability, but it is not the only process available. If you search for “Shapeways 3D printing service,” you’ll find plenty of evidence of a mature online prototyping platform. What has changed is breadth.

I now use Shapeways for a mix of work: CNC-machined aluminum parts when I need strength, injection-molded parts when a client is moving toward production, laser-cut sheet metal for brackets and enclosures, and 3D printed models when geometry is too complicated for subtractive methods. The common thread is that we upload a CAD model, check instant quotes, and choose the process that fits the quantity and end use.

For a single visual sample, the Shapeways 3D printing service is still a fast path. For anything else, I compare process options before assuming 3D printing is correct.

What does a 33 ton all-electric injection molding machine mean?

A client once asked whether that machine spec was “big enough” for his part. The number refers to clamping force, not part size. The press uses roughly 33 tons of force to keep the mold closed while molten plastic is pushed into the cavity. If clamping force is too low, the mold can open slightly at the parting line and the part develops flash around the edges.

For many small and medium parts, 33 tons is plenty. It fits housings, covers, gears, and similar components that need repeatable production. Injection molding has upfront tooling costs, so it rarely makes sense for a handful of prototypes. The machine spec matters once the order volume justifies a mold. A 33 ton all-electric injection molding machine with good process control is helpful because consistency affects scrap rate.

The all-electric part also matters. Electric presses tend to produce cleaner motion and lower energy use than hydraulic alternatives. More importantly for buyers, they can offer better repeatability over long runs. When I see that exact spec on a supplier’s page, I read it as attention to control rather than just raw clamping power.

Can laser cutting make aerospace parts?

Yes, but I’d be more precise: laser cutting is a production step that works for certain aerospace parts. It cuts flat material quickly and accurately, which makes it useful for covers, brackets, shims, shielding, and prototype parts that are not structural. When an order calls for laser cutting aerospace parts, the bigger question is what happens around the cut.

The term “aerospace grade” doesn’t come from the machine. It comes from material traceability, process controls, inspection records, and the quality system in place. If the component is structural or flight-critical, the supplier should be working under AS9100, the aerospace quality management standard published by SAE International. For development parts and non-structural brackets, a laser-cut sample is often the fastest way to test fit and function.

My rule of thumb: don’t ask whether the machine can cut the material. Ask whether the supplier can prove what was cut, whose material was used, and which tolerances were measured.

How to print large models on small 3D printers

Short version: split the model if you have to, but plan every cut. A client once needed a full-size mockup roughly five inches longer than our largest build volume. The easy route was to cut the file into two halves and glue them. The right route was to design the seams intentionally. Those are not the same thing.

For teams asking how to print large models on small 3D printers, the sequence that has worked for us is:

1. Split along a low-impact plane. Use hidden edges, grooves, or bottom surfaces. Avoid splitting through delicate detail.
2. Add alignment features. A slot and tab, small pins, or a rectangular pocket gives every piece a defined position. Butt joints leave too much room for error.
3. Print a calibration piece from the same material first. Shrinkage and printer drift affect the fit between parts. A keyed assembly only works if each piece is dimensionally accurate.
4. Plan for post-processing. Seams will be visible before sanding or filler. If appearance counts, leave enough stock to work with.

Avoid the temptation to scale the whole design down to fit. That changes the answer the model gives you. A 55% version doesn’t tell you whether the full-size product will feel right in someone’s hand. If you need dimensional truth and your printer is too small, compare the cost of splitting against the cost of using a larger machine through a service. We’ve sent oversized models to Shapeways and saved days of assembly time.

Why set up a Shapeways store?

A Shapeways store is best described as an on-demand catalog. You upload a design, define available options, and when a customer places an order the item is manufactured rather than pulled from a warehouse shelf.

That makes sense for spare parts, short-run accessories, and products with uncertain demand. It also helps companies that want to offer several design variations without preproducing every option. From my side of the desk, the most useful part is that order flow can connect directly to production, so I don’t have to manage inventory levels or chase fulfillment.

One thing I tell clients: the store doesn’t replace file preparation. Test every material and finish option before publishing. A store can sell a mistake just as easily as a good part.

When is paying for a rush order actually worth it?

My blunt answer: pay for a rush order when the cost of being late is higher than the rush premium. That’s it.

In March 2024, one client discovered a broken prototype part 36 hours before a trade show. Normal replacement lead time was five days. We paid a $780 rush fee on a part that had a standard order value of roughly $1,100, received it the next afternoon, and kept the client from standing at their booth with a broken product. Missing that deadline would have cost them their event placement.

The same month, we approved another rush fee after a slow internal review. The part arrived ahead of schedule and sat on a shelf for six days. Seeing those two jobs side by side made the rule obvious.

Before you approve a rush order, ask three questions:

1. What is the actual penalty for being late?
2. Is every step after delivery ready, or will the part wait?
3. Did the deadline come from real timing or from delayed decisions?

If the first answer is a specific number, pay the extra fee and move on. If not, the rush fee is a symptom of a planning problem. Fix that first. Period.