Tilley

CAD files for CNC machining are the foundation of every accurate quote and every good part. A machine shop turns your geometry into toolpaths, fixtures, and inspection plans. Everything downstream inherits the quality of what you send. A clean export can speed a quote by hours or days, while a

GD&T basics belong in every mechanical buyer’s toolkit. Geometric Dimensioning and Tolerancing, standardized under ASME Y14.5, describes how parts must fit and function, not just how big they are. A plain ± tolerance on every dimension looks simple, yet it can hide gaps, misalignment, and assembly failures. This guide walks

Every machined pocket carries an inside corner radius, and that radius comes straight from the cutting tool. An end mill is a cylinder, so it can only trace a matching arc where two walls meet. If your drawing shows a sharp 90-degree internal corner, the machine physically cannot produce it.

CNC wall thickness decides whether a part machines cleanly or becomes a vibration, distortion, and cost problem. Walls that look elegant in CAD can chatter, bend, or warp under the cutter. Housings, brackets, enclosures, and heat sinks all depend on walls thin enough to save weight yet thick enough to

UHMW machining converts ultra-high molecular weight polyethylene into precise, low-friction components. This thermoplastic slides better than almost any polymer, absorbs heavy impact, and resists most chemicals. Those traits make it a first choice for wear parts in packaging, mining, and food processing. Yet the softness behind that toughness also makes