CNC machining buyer guides, material selection notes, FAQ content and industry insights from JRCNC.
A buyer sends a drawing with a hard limit, “Ø10.00/9.99 mm, plate per spec,” and months later the parts arrive at 10.05 mm on a zinc deposit. Noth……
Learn MoreIf you machine to the drawing size and then anodize, the finished part can miss a tight tolerance even though nothing on the machine was set wrong. Anodizing ……
Learn MoreWhy Heat-Treatment Distortion Starts Before the Furnace Buyers often ask why a batch of CNC machined parts that measured perfectly at the machine shop comes b……
Learn MoreA surface roughness callout is only useful if it fixes four things at once: the parameter and its numeric limit, the cutoff and evaluation length that define ……
Learn MoreA CMM inspection report is not a pass/fail certificate by itself. It is a record of how a coordinate measuring machine sampled a part, how the part was aligne……
Learn MoreA first article inspection (FAI) is a production validation step in which a supplier fully measures and documents the first part (or a sample from the first ……
Learn MoreWhat does “burr-free” actually need to mean on a drawing? A buyer reviewing a CNC machined part usually discovers edge condition the hard way: a b……
Learn MoreThin-wall CNC machining is difficult mostly because a thin section is not stiff, so cutting forces, clamping forces, and residual stress all move the part whi……
Learn MoreThread callouts are the part of a drawing that tells a machine shop everything about how a threaded feature must be produced and verified. A complete CNC thre……
Learn MoreIf a buyer asks “what datum scheme should this part use,” the practical answer is: the scheme that makes the part assemble and function correctly,……
Learn MoreA drawing full of tight individual tolerances can still produce parts that will not assemble. The reason is usually not a single out-of-spec dimension but how……
Learn MoreGrade 7 Titanium Alloy: Complete Guide for CNC Machining Applications Introduction Grade 7 Titanium Alloy is one of the most widely used materials in precisi……
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