Engineering Notes

Practical articles on tolerances, manufacturability, inspection, materials, and CNC project planning.

Precision machined aluminum part with CMM probe, engineering drawing, and inspection report for FAI and CMM inspection scope review

Inspection & Verification

FAI vs CMM Inspection: What Buyers Actually Need

FAI and CMM inspection are often confused. Learn when buyers need first article inspection, when a CMM report is enough, and how to define inspection requirements before RFQ.

19 Min Read
Precision-machined aluminum bracket on a technical drawing with caliper and micrometer for RFQ drawing review.

Process & Planning

How to Review a Machined-Part Drawing Before Sending an RFQ

Before sending a CNC machining RFQ, review the drawing and technical package for critical features, tolerances, datums, revision control, material notes, finish requirements, and inspection needs.

9 Min Read
Machined aluminum housing with technical drawing and measurement tools for tolerance review

Tolerances & Quality

How Tight Tolerances Affect CNC Machining Cost

Tight tolerances can improve function, but they also increase machining time, inspection effort, setup sensitivity, and cost when applied unnecessarily.

6 Min Read
Precision machined aluminum part with CMM probe, engineering drawing, and inspection report for FAI and CMM inspection scope review

Inspection & Verification

FAI vs CMM Inspection: What Buyers Actually Need

FAI and CMM inspection are often confused. Learn when buyers need first article inspection, when a CMM report is enough, and how to define inspection requirements before RFQ.

19 Min Read
Precision-machined aluminum bracket on a technical drawing with caliper and micrometer for RFQ drawing review.

Process & Planning

How to Review a Machined-Part Drawing Before Sending an RFQ

Before sending a CNC machining RFQ, review the drawing and technical package for critical features, tolerances, datums, revision control, material notes, finish requirements, and inspection needs.

9 Min Read
Machined aluminum housing with technical drawing and measurement tools for tolerance review

Tolerances & Quality

How Tight Tolerances Affect CNC Machining Cost

Tight tolerances can improve function, but they also increase machining time, inspection effort, setup sensitivity, and cost when applied unnecessarily.

6 Min Read

This form is for initial technical review, not just pricing. Clear files and key concerns help us assess the next step more accurately.

File formats: PDF, STEP/STP, IGES/IGS, DWG, ZIP| Max file size: 200MB