CNC Machining Resources & Technical Guides
This resource library covers the technical specifications, material properties, tolerance capabilities, and process details that engineers, procurement managers, and production teams need when sourcing exotic metals machining. Everything here reflects the 40 years of combined experience GQ Machining brings to Hastelloy, Inconel, 316 stainless steel, and related high-performance alloys — grounded in real machining practice, not textbook generalizations.
Whether you’re specifying tolerances for a new extrusion die, comparing Hastelloy grades for a corrosive application, or trying to understand what surface finish your food-grade components actually require, these guides are written to give you accurate, useful answers.
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Technical Guides & Reference Pages
Machining Tolerances Guide
A practical reference covering what tolerances are achievable by process — ±0.0001” with wire EDM, ±0.0005” standard CNC milling — along with what drives tolerance selection in Hastelloy, Inconel, and stainless steel applications. Includes guidance on when tighter tolerances are worth the additional cost and when standard tolerances perform just as well.
Surface Finish Specifications Guide
Covers Ra surface finish values, mirror finish capabilities, and sanitary finish requirements for food-grade 316L stainless steel components. Particularly relevant for extrusion dies, extruder screws, and food contact surfaces where finish quality affects both performance and regulatory compliance.
Material Properties Comparison Chart
Side-by-side comparison of corrosion resistance, temperature capability, machinability, and typical applications for Hastelloy C-276, Hastelloy C-22, Inconel 625, Inconel 718, 316/316L stainless steel, Monel, and tool steels. A practical selection reference when deciding which alloy fits your application.
Equipment Capabilities Overview
Full specifications for GQ Machining’s CNC milling, turning, EDM, and surface grinding equipment — travel envelopes, spindle speeds, turning capacity, part weight limits, and tolerance ranges. Useful for confirming whether we can handle your part size and geometry before sending drawings.
Exotic Metals Machining FAQ
Answers to the questions we hear most often from engineers and procurement managers: How do you hold tolerance in Hastelloy? What’s the minimum order quantity? What file formats do you accept? How do lead times work? What does a quote process actually look like? If you’re evaluating GQ Machining as a supplier, this is a good starting point.
About These Resources
The guides and reference pages in this section are built around the high-performance metals we machine daily — Hastelloy, Inconel, 316 stainless steel, and the rest of the alloy range that most machine shops either avoid or handle poorly. Forty years of combined experience machining these materials for food extrusion equipment and polymer processing equipment manufacturers across NY, NJ, and CT gives us a different perspective than a generalist shop writing about topics it rarely encounters.
These resources are written to be useful whether or not you’re working with us. If they help you make a better material selection or write a tighter tolerance specification, that’s the point.
More About GQ Machining
If you’re researching whether GQ Machining is the right machining partner for your project, the About GQ Machining page covers our equipment, team experience, and the extrusion equipment history that sets us apart from general-purpose CNC shops.
For specifications or drawings ready for quoting, contact us directly. We respond to all inquiries within 24 business hours.
Call (845) 866-5869 or email contact@gqmachining.com.