Engineering Notes
Practical guidance for prototyping teams.
From our floor to your CAD file — real insights on CNC machining, tolerances, materials, and DFM.
Minimum Radius and Wall Thickness: The Two CNC Design Rules That Kill Most Parts
Sharp internal corners and paper-thin walls are the top reasons CNC parts fail in production. Learn the physics behind these limits, how to design around them, and how OpusFab's DFM checks catch them before you waste a machining cycle.
Machining Tolerance vs. Final Tolerance: The Most Expensive Mistake in Manufacturing
Learn the critical difference between machining tolerance and final tolerance. See how finishes like anodizing, powder coating, and plating affect dimensions-and how OpusFab's instant CNC quote prevents costly scrapped parts.
Why Traditional CNC Quoting Is Broken (and What Engineers Should Do Instead)
Tired of waiting days for a CNC quote? Discover how direct CNC manufacturing with instant quoting gets you from CAD file to machined parts in days, not weeks.