Fabrication & Machining

Metal fabrication workflow from design to finished component

Manufacturing
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Lead Time

62.0h

Cycle Time

9.0h

Wait Time

53.0h

PCE

14.1%

Stages

7

Bottleneck

Dispatch

Value-Add vs Non-Value-Add

Value-Add (VA)

An activity is value-add if it meets all three criteria:

  • The customer is willing to pay for it
  • It transforms the product or service
  • It is done right the first time

Examples: Assembly, diagnosis, treatment, coding, machining, testing

Non-Value-Add (NVA)

Activities that consume time or resources but don't add value from the customer's perspective:

  • Waiting — queues, approvals, batching delays
  • Transport — moving materials or information
  • Motion — unnecessary movement of people
  • Rework — correcting defects or errors
  • Over-processing — doing more than required

Note: Some NVA is necessary (compliance, safety). Target unnecessary NVA first.

Process Timeline

Value-Add vs Non-Value-Add

Bottleneck Analysis

Stage Efficiency

# Stage Cycle (h) Wait (h) VA Resource Defect % Efficiency
1 Engineering Drawing Review 1.0 8.0 VA Engineer 5.0% 11.1%
2 Material Cutting 0.75 2.0 VA CNC Operator 3.0% 27.3%
3 Machining 3.0 1.0 VA Machinist 4.0% 75.0%
4 Welding 2.0 4.0 VA Welder 6.0% 33.3%
5 Surface Treatment 1.5 12.0 VA Surface Tech 3.0% 11.1%
6 Final Inspection 0.5 2.0 VA QC 8.0% 20.0%
7 Dispatch 0.25 24.0 NVA Logistics 1.0% 1.0%