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.
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 →Parts Gallery
Photographs of parts machined at our plant.
View →Technical Glossary
EN/DE/CN glossary of machining and metrology terms.
View →Frequently asked questions
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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.
Critical features are verified in house · material chemistry confirmed by spectrometer · EN 10204 3.1 certificates available.
Prefer email? Write to us directly at info@prototech-machining.com
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.
Talk to our team about special materials, tolerances or a failed-supplier recovery before you send drawings.