CNC undercuts are the features that quietly double a part’s price. An undercut is any surface a standard tool cannot reach from a straight direction. Internal grooves, snap-fit lips, and recessed threads are typical examples. Because end mills cut only where they can physically travel, these features force special tools, […]

Thin wall machining separates routine CNC work from the parts that keep machinists awake at night. A wall that looks fine in CAD can chatter, deflect, or warp the moment the cutter touches it. The result is scrapped parts, blown tolerances, and surprise costs. This guide explains why thin walls

Chamfer vs fillet is one of the first edge questions we check on any incoming CNC drawing. Both features break a sharp corner, yet they do it with different geometry, different tools, and different price tags. Chamfers are straight bevels, usually cut at 45 degrees. A fillet, by contrast, is

When strength, wear resistance, or fatigue life matter, buyers order heat treatment CNC parts: machined components sent through controlled heating and cooling cycles to change their metallurgy. In fact, sequencing decides success on heat treatment CNC parts. Specifically, hardening, tempering, annealing, and case hardening each interact differently with machining, and

Every machined surface carries a texture of microscopic peaks and valleys, and the surface roughness Ra number quantifies it. Specifically, surface roughness Ra measures the average deviation of the surface profile from its mean line, reported in microns or microinches. That single callout drives machining time, secondary operations, and inspection