HomeResources
Engineering Resource Center

Engineering Resource Center

Practical guides from the shop floor: how we hold tolerances, control burrs, manage stress and choose materials for parts that are hard to machine.

Request a Quote

CNC Tolerances: What Is Achievable

What precision machining holds and what drives cost.

View →

3-Axis vs 5-Axis Machining

How to choose between the two processes.

View →

CNC Turning vs Swiss-Type

Which process fits slender or chunky parts.

View →

DFM for CNC Machining

Design rules that remove cost before quoting.

View →

Machining Kovar

Process controls for glass-sealing components.

View →

CMM Inspection

How critical dimensions are verified.

View →

Machining PEEK: The 5 Hard Problems

Process controls for burrs, heat and dimensional drift.

View →

Machining Kovar

Process controls for glass-sealing components.

View →

Machining Tungsten

High-density alloys and how to cut them.

View →

Machining PVDF

Chemical-resistant fluoropolymer parts.

View →

Machining PTFE

Soft, inert and awkward to hold to size.

View →

5-Axis Machining Guide

When five-axis pays off and how to prepare a part.

View →

Surface Finish Guide

What Ra means and what determines finish.

View →

Tight Tolerance Guide

The process behind a repeatable tight tolerance.

View →

Machining Cost Factors

What actually drives the price of a part.

View →

FAI Guide

Process, report and acceptance before series.

View →

Material Certificates

EN 10204 3.1 explained and what to request.

View →

Parts for Machine Builders

Structural, motion and interface parts.

View →

Parts for Automation

Wear-resistant, repeatable components.

View →

Parts for Robotics

Stiff, light structural and joint parts.

View →

Machining Alumina Ceramic

Diamond grinding of hard, brittle parts.

View →

Machining Graphite

Why dry machining and dust control matter.

View →
Explore more
Start a project

Request a Quote

Tell us about your program. The fields below help our engineering team prioritize recurring, long-term supply programs with equipment manufacturers.

What happens after you send your files

  • Within 1 business day an engineer — not a salesperson — reviews your drawings and replies.
  • DFM review: tolerances, material and risk flags, before any cutting begins.
  • Your quote includes a material-verification plan: grade, EN/DIN check, certificate strategy.

Every critical dimension is verified on our in-house Zeiss CMM · material chemistry confirmed by spectrometer · EN 10204 3.1 certificates available.

Prefer email? Write to us directly at info@prototech-machining.com

Programs at 1,000+ pcs/year or recurring production are prioritized by our engineering team.
Built for qualified programs.
Our form captures production type, annual quantity and project status up front — so we can focus engineering resources on long-term supply relationships, not one-off inquiries.
Need engineering input first?
Talk to our team about special materials, tolerances or a failed-supplier recovery before you send drawings.