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Material comparisons, design rules that lower your quote, and what we learn printing and machining other people's parts.
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Technology
3D Printing vs CNC Machining: When to Print and When to Mill
Additive vs subtractive manufacturing isn't an either-or decision. Here is how engineers calculate the economic breakeven and geometric constraints for both methods.
Technology
FDM vs SLA vs SLS: Choosing the Right Additive Manufacturing Process
Comparing the big three 3D printing technologies: surface finish, mechanical isotropy, build envelope limits, and per-unit production cost curves.
Design Tips
Infill Patterns Explained: Gyroid, Grid, Honeycomb, and Optimal Wall Count
Stop cranking infill to 80% to make parts strong. Adding just two extra outer perimeters provides higher stiffness with less print time and material waste.
Design Tips
Press-Fits, Clearances, and Bearing Pockets: Designing for Real-World Tolerances
Why a 22 mm hole in CAD never prints at exactly 22 mm. How to calibrate bore hole shrinkage, design lead-in chamfers, and seat ball bearings firmly without cracking walls.
Design Tips
Snap-Fit Joints in 3D Printing: Cantilever Formulas and Tolerance Budgets
Eliminate screws with elegant cantilever snaps. How to compute strain percentages, design generous root fillets, and avoid layer separation during assembly.
Design Tips
Designing Living Hinges for FDM and SLS: Material Choice and Geometry Rules
Can 3D printed parts bend 10,000 times without snapping? Yes, if you respect hinge thickness, radius profiles, and print line orientation. Here is our design guide.
Design Tips
Threaded Inserts vs Direct Tapping: How to Fasten 3D Printed Assemblies
M3 and M4 brass heat-set inserts provide reliable, reusable machine threads in plastic enclosures. Here are boss diameter formulas, insertion tips, and pull-out test data.
Materials
Polycarbonate (PC) Printing Guide: Maximum Temperature Resistance and Impact Toughness
With heat deflection temperatures above 110 °C and near-shatterproof impact resistance, Polycarbonate handles extreme mechanical stress. Here is how to print it without warping.
Materials
Nylon (PA12 & PA6) in Production: Moisture Absorption, Annealing, and Durability
Polyamides are workhorses for functional gears and snap latches, but moisture changes their dimensions and ductility. Here is how we dry, print, and condition nylon parts.
Materials
ABS vs ASA: Why ASA Is the Ultimate Outdoor UV-Resistant Polymer
Why ABS turns yellow and brittle in the African sun while ASA retains its color and impact strength. A breakdown of thermal stability, enclosure needs, and outdoor fixtures.
Materials
Carbon Fiber Filled Filaments: Real Structural Strength vs Marketing Hype
Chopped carbon fiber does not turn plastic into aerospace carbon sheets. Here is what fiber-loaded filaments actually do for stiffness, dimensional accuracy, and layer adhesion.
Materials
TPU & Flexible Filaments: Shore Hardness, Print Settings, and Gasket Design
From 85A vibration dampeners to 95A snap-on bumpers, here is how to select the right TPU Shore hardness, tune extrusion, and design leak-free gaskets.