How fast can I get a 3D printed part?

In most cases within one to two business days of file approval, even for relatively large models. Complex builds, metal prints, or parts requiring extensive finishing can take longer, but iteration cycles measured in days rather than weeks are the norm.

What materials can be 3D printed?

Engineering plastics like PETG, ABS, nylon and carbon-fiber-reinforced nylon, flexible TPU, precise and clear resins, biocompatible resins for medical applications, high-temperature polymers like PEEK and ULTEM, and metals including aluminum, stainless steel, and titanium.

Are 3D printed parts strong enough for real use?

Often yes. SLS and MJF nylon parts are strong and isotropic, behaving much like injection-molded components, and carbon-fiber-filled FDM materials handle serious mechanical loads. Print orientation, material choice, and design for the process determine strength, which is why engineering guidance matters.

When should I switch from 3D printing to injection molding?

As a rule of thumb, printing wins for prototypes and runs up to a few hundred or a few thousand units per year, while injection molding wins at higher volumes where its low per-part cost repays the tooling investment. The exact crossover depends on part size and material — a landed cost-per-unit comparison settles it.

Can 3D printing be used for medical devices?

Yes — biocompatible resins and powders are widely used for prototypes, surgical models, and certain production components. Any part intended for clinical use must go through the applicable FDA regulatory pathway and be validated for its intended use, so involve regulatory planning early.

3D Printing Services — Technologies, Materials, Costs, and When to Use Each

Q: How much does 3D printing cost?

Price depends on material volume, technology, and finish. A simple FDM part can cost tens of dollars, SLS and MJF nylon parts typically run from under a hundred to a few hundred dollars, and complex metal prints can reach into the thousands. It is negligible compared to the cost of a design error found after injection tooling is cut.

3D Printing Has Grown Up — Here Is How to Use It Right

3D printing has evolved from a niche tool for early mockups into a full-fledged manufacturing technology. Where a 3D printer once served mainly to visualize an idea, today you can print functional end-use parts, production fixtures, and even small commercial runs — in engineering polymers, flexible materials, and metals. This guide surveys the leading printing technologies, explains when each one is the right call, and shows how the process works in a real product development project.

Why 3D Print at All?

In new product development, every design iteration needs physical validation: checking fit between parts, testing mechanisms and snap fits, evaluating ergonomics and appearance, and putting a convincing model in front of investors and customers. 3D printing delivers a part in hand within a day or two, for tens to hundreds of dollars — instead of sinking tens of thousands of dollars into an injection mold before the design has matured. Problems surface early, expensive revision cycles disappear, and you reach production tooling with a proven design. That is why printing sits at the heart of every modern prototyping program.

The Core Technologies Today

FDM / FFF (filament printing) — the most common and affordable technology. The current generation of machines is dramatically faster than earlier ones and supports genuine engineering materials: PETG and ABS, carbon-fiber-reinforced nylon for stiff, strong parts, flexible TPU for seals and shock-absorbing components, and even high-temperature polymers like PEEK and ULTEM for demanding applications. Excellent for mechanical prototypes, enclosures, and manufacturing aids.

SLA / mSLA (resin printing) — modern resin printers deliver accuracy and surface quality that can be hard to distinguish from a molded part. Clear, rigid, high-temperature, and biocompatible resins are available for medical and dental applications. The natural choice for presentation models, optical parts, and fine-featured components.

SLS (selective laser sintering) — nylon (PA12, PA11) printed without support structures, yielding strong, isotropic parts suited to real functional use. Excellent for mechanisms, living hinges, and small series.

MJF (Multi Jet Fusion) — an industrial powder technology that produces dense, accurate nylon parts at high throughput. Today it is one of the most cost-effective bridges between prototype and production: runs of hundreds to thousands of units with zero tooling investment.

Metal printing (DMLS / SLM / binder jetting) — printing in aluminum, stainless steel, titanium, and more. It enables geometries no machine shop can produce — internal cooling channels, topology-optimized lightweight structures — and serves aerospace, medical device development, and production tooling.

Multi-material and full-color printing (PolyJet and similar) — rigid and rubber-like materials combined in a single print, including full color. Ideal for impressive presentation models and for simulating overmolding before any tooling exists.

What Has Changed Recently?

Software and design. STEP and 3MF files have steadily replaced the old STL format, carrying richer information — color, material, tolerances. Generative design tools help engineers create lighter, stronger parts that exploit the geometric freedom only printing offers.
Speed. Current FDM machines print several times faster than the previous generation, and mSLA printers cure an entire layer at once — a model you once waited a week for now arrives in a day.
From prototype to production. Technologies like MJF and SLS blur the line between model and product. For items sold in up to a few thousand units per year, 3D printing is often a genuine economic alternative to injection molding.
Finishing. Painting, vapor smoothing, threaded metal inserts, and coatings turn a printed part into a finished commercial product.

How 3D Printing Works at Projects House

File or idea. If you already have a 3D file (STEP, 3MF, STL, or native SolidWorks/Fusion files), we work from it. No file? Our mechanical engineering team designs the part from scratch — from sketch to print-ready model.
Technology and material selection. We recommend the process and material that fit the application: mechanical strength, flexibility, temperature resistance, clarity, or regulatory requirements such as FDA-relevant biocompatible materials.
Printing and quality control. The part is printed, cleaned, finished, and dimensionally inspected against the design.
Iteration. When needed, we make fast design revisions and print an improved version until the part is right — then help you plan the transition to series production alongside our full prototype development services.

How Much Does 3D Printing Cost?

Price is driven mainly by material volume, the chosen technology, the finish level, and turnaround. A simple FDM part can cost only tens of dollars; SLS and MJF parts typically run higher; and complex metal prints are priced accordingly, often in the hundreds to thousands of dollars. Either way, the cost of printing is negligible compared to the cost of a design mistake discovered only after production tooling has been cut. When quantities grow, we help you judge the crossover point where molding wins — a central question in choosing among manufacturing technologies.

The Bottom Line

3D printing is one of the most powerful tools in a product developer's toolbox today: it compresses timelines, cuts development cost, and even lets you enter the market with small production runs before investing in tooling. At Projects House you get the whole chain in one place — engineering design, technology selection, printing, finishing, and guidance all the way from first prototype to series manufacturing, wherever your product sits on the idea-to-product journey.

Have a part to print or a product to develop? Send us the details through the contact form — the Projects House team will recommend the right technology and material and get your parts moving.

3D Printing Services: From Rapid Prototyping to Low-Volume Production