Practical guides on CNC, 3D printing, vacuum casting and rapid prototyping — written for engineers who need to choose the right process.
For 15–100 identical parts, vacuum casting beats 3D printing on unit cost and material feel. Here is how to decide.
Read more →Casting wins for complex hollow shapes and huge volumes; CNC wins for precision and fast turnaround on low runs.
Read more →Same CNC family, different strengths. Match the method to your part's shape to save time and cost.
Read more →A practical comparison for prototypes and low-volume parts: when to use CNC and when 3D printing is the better fit.
Read more →A practical guide for prototypes and low-volume production: when CNC beats molding, and when the tool pays off.
Read more →Choosing between CNC and sheet metal comes down to wall thickness, tolerances, and volume. Here is the practical decision map.
Read more →Pour molten metal, or cut solid metal? The right answer changes sharply with volume.
Read more →For a quick fit check use FDM; for smooth, accurate show models use SLA. The cost gap is shrinking.
Read more →One builds without a mold, the other needs a mold to be economical. Know where the crossover sits before committing.
Read more →Smooth and tiny, or tough and cheap? The two families serve very different prototype needs.
Read more →Both make rigid parts, but one bends flat stock and the other builds up. Pick by shape, conductivity and volume.
Read more →Choose SLA for visual models and fine detail; choose SLS for functional, durable nylon parts.
Read more →Two mature nylon powder processes, two different cost and finish profiles. Learn which fits your prototype and low-volume parts.
Read more →Not all '3D printing' is the same. SLS makes tough plastic parts; SLM makes real metal parts. Here is the split.
Read more →Need 20 to 200 realistic plastic parts without a steel mold? Vacuum casting is usually the sweet spot.
Read more →Match the material to the part's job: appearance, function, flexibility, or heat resistance each point elsewhere.
Read more →A practical guide to aluminum CNC machining: grade selection, tolerances, surface finishes and design tips for prototypes and low-volume parts.
Read more →Stiffness comes from geometry, not just thickness. Use ribs and bosses before you thicken the whole wall.
Read more →Match the metal or plastic to the job: weight, strength, corrosion, and cost all point to a different stock.
Read more →Uniform wall thickness, sensible radii, and standard holes save more money than any supplier negotiation.
Read more →ABS is the cheap all-rounder, PC brings clarity and impact strength, PA is tough and slippery, PEEK survives heat that melts the rest.
Read more →Plus-minus sizes tell a part how big; GD&T tells it where features must sit. Use both, but only where function needs it.
Read more →316L for corrosion, Ti6Al4V for strength-to-weight, AlSi10Mg for light stiff parts, Inconel for extreme heat. Match need to metal.
Read more →Match the material to what you need to learn: form, fit, function or failure.
Read more →Tighter tolerance, premium material, and rush shipping are the three silent budget killers in prototyping.
Read more →A snap fit is a tiny spring; size it like one or it will crack on the first open.
Read more →Match the finish to the metal and the job: corrosion, wear, color, and conductivity each point to a different process.
Read more →You do not need a mirror finish on a prototype. Specify Ra only where it changes how the part works or sells.
Read more →Reliable threads start with the right type and a method your prototype process can actually hold to spec.
Read more →Standard CNC holds ±0.1 mm easily; demanding ±0.01 mm can triple cost and double lead time.
Read more →Keep walls within a proven range for each process and hold thickness uniform across the part. That one habit prevents most failures.
Read more →Use printed titanium or aluminum for test brackets, CNC for certified fittings, and prove the weight and load path before flight approval.
Read more →From lens clarity to reflector housing, learn how to prototype automotive lights that meet both function and styling.
Read more →Use SLA for show-quality shells, CNC for metal frames, and always prototype the internal stack-up so the board actually fits the case.
Read more →Print the airframe brackets, CNC the motor mounts, and fly a physical prototype before committing to a molded shell.
Read more →Learn to prototype fixtures and jigs that hold parts precisely and survive the shop floor.
Read more →Design IoT enclosures that protect circuits yet let the signal through.
Read more →Build prototypes that resist seawater, pressure and growth for boats and subsea equipment.
Read more →Use medical-grade ABS or PEEK for look-and-feel, 316L for sterile metal parts, and never skip the gap analysis between prototype and regulation.
Read more →From PMMA to coated glass, learn how to prototype lenses that meet real optical specs.
Read more →From concept models to functional brackets, rapid prototyping lets automotive teams test more ideas faster and cheaper.
Read more →A practical checklist for overseas teams: capability range, workflow, quote prep, and how to vet a China prototyping supplier.
Read more →Print the brackets, machine the joints, and test the real envelope before committing to a molded production run.
Read more →Make wearable prototypes that people actually want to wear all day.
Read more →Understand the cost levers and you can cut prototype spend without cutting quality.
Read more →Every part you remove is one less thing to make, buy, stock and break.
Read more →Stop designing for machining and start designing for the printer to save time and money.
Read more →A great prototype that cannot be sourced is just a demo, not a business.
Read more →Choose the right bridge process so you are not stuck between prototype and tooling.
Read more →A prototype you have not tested is just an expensive guess.
Read more →Design for the end process from day one, lock the design with data, then choose the right volume bridge — CNC, vacuum casting, or injection molding.
Read more →Use aluminum or printed molds for 50–5,000 parts with real production resin before you commit to hardened steel tooling.
Read more →A practical guide to 5-axis CNC machining: when the extra axes pay off, what geometry only 5-axis can make, and how it compares with 3-axis or 3D printing.
Read more →More guides are published regularly. Cannot find your topic? Contact our engineering team.
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