What is the difference between DLP and SLA?
The Light That Builds: Decoding the Resin 3D Printing Universe A junior engineer walked into my office last week, completely bewildered. He was holding two quotes for a prototype, a small, intricate medical device housing. One quote was from a service bureau using “SLA” and the other from a different bureau using “DLP.” The DLP […]
Fix Failed Prints: An Engineer’s Guide to HIPS vs. PVA Supports
I have a graveyard on my desk. It’s not a real graveyard, of course. It’s a collection of plastic failures. A beautiful, intricate lattice cube where the internal support structures fused to the model, turning it into a solid, useless block. A turbine impeller with delicate, curved blades, half of which snapped off during a […]
Stop Print Failures: An Engineer’s Guide to DMLS vs. SLM
Feature DMLS (Direct Metal Laser Sintering) SLM (Selective Laser Melting) Core Mechanism Sintering: Laser heats powder to the point where particle surfaces fuse. Melting: Laser fully melts the powder into a liquid that solidifies. Material Compatibility Best for alloys with a wide melting range (Inconel, Tool Steels). Best for pure metals or alloys with a single melting […]
Stop Product Failures: An Engineer’s Guide to TPR Properties
Quick Answers: The Core Properties of TPR Property Description & Value Rubber or Plastic? It’s both. TPR is a polymer alloy that combines the properties of plastic (easy to process) with the performance of rubber (flexible and soft). Is it Soft? Yes. It’s available in a huge range of hardness levels, from gel-like soft to […]
Stop Product Failures: An Engineer’s Guide to TPR vs. PVC
In my 25 years of running a factory that turns raw plastic pellets into finished products, I’ve learned that the most expensive mistakes often begin with the simplest questions. A client will walk in, point to a CAD model of a handle grip, and say, “We want this part made from a cheap rubber.” That […]
What is the difference between PLA and PET filament?
Feature PLA (Polylactic Acid) PETG (Polyethylene Terephthalate Glycol) Primary Use Case Rapid Prototyping, Visual Models, Hobbyist Prints Functional Prototypes, Mechanical Parts, End-Use Items Strength & Durability Stiff and rigid, but brittle. Snaps under stress. Less rigid, but much tougher. Flexes before breaking. Heat Resistance Very Low. Warps above 60°C (140°F). Good. Stable up to 80°C (175°F). Ease of Printing […]
Fix Brittle Prints: An Engineer’s Verdict on PLA vs. PLA+
Every week, a new client walks into my factory with a familiar story. They hold up a shattered plastic part, beautifully printed but broken clean in two, and say, “I don’t get it. I printed this in PLA+, the strong stuff. Why did it fail?” My answer is always the same. I pick up two […]
What is Mylar Sheet Used For?
Quick Answer Mylar is the brand name for a polyester film called BoPET (Biaxially-oriented Polyethylene Terephthalate). Its unique combination of high tensile strength, chemical and dimensional stability, electrical insulation, and gas barrier properties makes it a critical material in applications ranging from high-performance electronics and food packaging to emergency space blankets and archival storage. What […]
Stop Your Prints from Failing: An Engineer’s Guide to PLA vs. ABS
Feature PLA (Polylactic Acid) ABS (Acrylonitrile Butadiene Styrene) Bottom Line Easy to print, great for prototypes. Brittle and weak to heat. Strong, durable, heat-resistant. Difficult to print, requires an enclosure. Ease of Use Very Easy. The go-to for beginners. Difficult. Prone to warping and requires a heated bed. Strength & Durability Low. More brittle, will snap under […]
Stop Wasting Money on Cheap 3D Prints: An Insider’s Guide to Real Costs
A lot of people land on our site after searching for things like “cheap 3D printing” or, as I often see in our web logs, “how much does rapmaf charge for 3D printing?” First off, that’s us—RM (Rapid Manufacturing). And secondly, that’s the million-dollar question. I could give you a simple price-per-gram, and some services […]
