JF Precision / Resources

CNC Machining Blog — Precision Engineering Guides

Practical articles on custom CNC machining — materials, tolerances, surface finishing and quality control, written by our engineering team.

Coating allowance planning for precision CNC parts - pre-coating and final dimensions - JF Precision

Latest Article · August 11, 2026

Coating Allowance for Precision CNC Parts

How to control final dimensions after plating.

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Chrome-coated precision shafts and rods on a plating rack - Ni + NTDC vs Ni + XADC nickel-chrome composite coating - JF Precision

August 10, 2026

Ni + NTDC vs Ni + XADC®

Which nickel-chrome composite coating should you choose for your custom CNC part?

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CNC machining inspection report - CMM measurement of a custom part - JF Precision

August 10, 2026

CNC Machining Inspection Reports

How JF Precision verifies dimensions, tolerances, GD&T, threads, surface roughness and supporting documentation for custom CNC parts.

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Custom CNC milled parts - housings, brackets and multi-sided components - JF Precision

August 10, 2026

Custom CNC Milled Parts Design Guide

How JF Precision evaluates geometry, tool access, workholding, datums, tolerances and inspection before CNC milling.

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Nickel-chrome composite coating for custom CNC parts - JF Precision

July 19, 2026

Nickel-Chrome Composite Coating

Bi-Protec® nickel-chrome composite coating gives custom CNC parts dual protection against corrosion and wear.

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Diamond thin dense chrome coating for CNC parts - JF Precision

July 19, 2026

Diamond Thin Dense Chrome Coating

XADC® diamond thin dense chrome coating for wear-resistant shafts, sleeves and tooling, with coating allowance planning and final inspection.

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Custom CNC turned parts - shafts, bushings, sleeves - JF Precision

July 12, 2026

Custom CNC Turned Parts

Shafts, bushings, sleeves, pins and threaded components — manufacturing process, material selection, inspection methods and surface finishing.

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How to prepare a CNC machining RFQ - JF Precision

July 12, 2026

How to Prepare a CNC Machining RFQ

Complete guide on sending 3D files, 2D drawings, materials, tolerances, surface finishes and inspection requirements for accurate quotes.

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Custom CNC machined prototype parts - JF Precision

July 5, 2026

Custom CNC Machined Parts

How we turn customer drawings and 3D files into reliable machined components — from one-piece prototypes to repeat production.

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Custom CNC machined plastic parts - POM PEEK PTFE - JF Precision

July 5, 2026

Custom CNC Machined Plastic Parts

POM, PEEK, PTFE, nylon, PC and ABS — deformation control, tight tolerances, and low-volume precision plastic manufacturing.

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