How to become an MEP detailer when you already know the trade.

You already have the hard part.

Mechanical contractors build from fabrication models now. Every duct fitting, pipe spool, and hanger is modeled before it's built, and the person who models it is the detailer. Software can be taught in a semester. Knowing what the crew needs, what fits through the door, and what a bad drawing costs in the field takes years in the trade.

This playbook shows you what to learn, in what order, how to prove you learned it, and how to get someone to hire you for it.

Who wrote it

I started as a sheet metal shop apprentice in May 1996, fabricating duct, architectural, and specialty work. In my third year I started drawing architectural sheet metal, then moved into specialty fabrication for nuclear and food processing. From there: estimating and project management, NQA-1 special fabrication, structural and architectural design, eleven years as an HVAC lead designer on NQA-1 seismic ductwork, then sheet metal detailer, constructability lead, and VDC manager over every trade in a mechanical contractor's Northwest division.

Since 2018 I've taught BIM/VDC to apprentices at the S.E. WA / N.E. OR Sheet Metal Workers JATC. Along the way I wrote reference guides for detailers, standardized project startup, built Revit add-ins, and mentored detailers into technical leads. The playbook pulls from all of it.

What's inside

• My path. 30 years from shop apprentice to VDC manager, and what each stop taught me.
• The roles. What each role in detailing and VDC owns, and what moves you to the next one.
• The self-assessment. 21 questions across five skill buckets to find your starting point in 15 minutes.
• The 90-day study plan. Week by week through Revit, fabrication parts, hangers, spooling, Navisworks, and clash detection. Every week ends with something you can show.
• Portfolio without a job. Three pieces you can build on your own that prove you can produce.
• Resume translation. Real examples from my own resume showing how to turn shop and field experience into the language detailing managers hire for.
• The interview. Questions you'll be asked, strong answers, and what to ask them.
• Your first 90 days. Habits that get new detailers trusted fast, plus clash triage rules of thumb.
• Field math card. Offset constants, rolling offsets, duct velocity, equivalent round, and pipe slope with worked examples.

Already detailing? Volume 2: the Project Field Guide.

Volume 1 gets you into detailing. Volume 2 is how to run any MEP project once you're there: the eight conversations every job must hold, from kickoff to closeout, what each one has to produce, and how you know you're ready for it. For sheet metal, piping, plumbing, and electrical detailers.

• The eight checkpoints. Kickoff, setup verification, production rhythm, area sign-off, design review submittal, fabrication release, field feedback, and closeout.
• Operating principles and rules. Why Ops is the hub, modeling order, hanger non-negotiables, coordination rules, and a QA/QC self-check.
• The Detailers' Needs Hierarchy. Six levels, with readiness checks tagged to each, so you know what to learn next.
• Three count-back schedules. Design review, insert and layout (with GIS/GPS point naming), and construction deliverables, each with suggested days you adjust per project.
• 10 fillable worksheets and 2 reference posters. Project Tracker, Kickoff, Readiness, three deliverable trackers, Pre-Publish, Self-Check, Field Feedback, and Closeout, plus 11x17 Contract Drawing Hierarchy and Drawing Lifecycles posters.

Get the Field Guide: $29 Both volumes: $45

Leading a detailing team? The team license ($149) lets your company share and print it internally. Apprentices and students: code JATC for 50% off the personal edition and the bundle.

Not sure detailing is for you yet? Start with the free map.

The Sheet Metal Career Map shows where a union sheet metal apprenticeship can take you: shop or field, nine kinds of work, twelve jobs, and the road to leadership. Page two is a skills worksheet for mapping your next move. Free to print and share with a class.

For teachers: the Building Trades Career Kit

A ready-to-teach 50-minute lesson on sheet metal careers: a 16-slide PowerPoint with speaker notes, a facilitator guide, the Career Map and skills worksheet, and an Earn While You Learn handout with 2026 Local 55 wage rates and a four-year degree cost comparison.