CAD, CAM and shop data exchange
What DXF, DWG, IFC and PDF files carry and how a flashing drawing becomes folder data, the units, frames and angle conventions an exchange must state, a worked drip edge from drawing to feature list, and the defects and checks that stop a wrong file reaching the folder.
4 lessons · about 43 min · 10 diagrams · 6 videos
Version 1.0.0
Builds on these modules
Lessons
0 of 4 complete
Lesson 1 · 11 min · 10 slides · 8 questions
CAD, CAM and shop data exchange: principles and terminology
What CAD, CAM and data exchange mean in a flashing shop, what each common file format carries, how a profile is written as a folder feature list and reaches a machine, and why guarding stays on whatever the file says.
You will be able to: Name what DXF, DWG, IFC and PDF files carry, explain how a flashing drawing becomes the ordered bend data a CNC folder runs, and state the guarding rule that applies when data drives a powered machine.
Not startedStart →Lesson 2 · 11 min · 11 slides · 8 questions
CAD, CAM and shop data exchange: materials, standards and design constraints
The conventions every exchanged drawing has to state (units, coordinate frame, angle convention, model space, layers and dimension definition points), how precision is handled, and the AFS limits and folder behaviour the file does not carry.
You will be able to: Identify the units, coordinate frame, angle convention, layer and dimension rules an exchanged drawing must declare, and the AFS fabrication limits a profile must meet before it can be sent.
Not startedStart →Lesson 3 · 10 min · 10 slides · 7 questions
CAD, CAM and shop data exchange: methods and worked application
An eight-step method from drawing to folder-ready data, worked through on the FlashDraft drip edge: format, units, legs, girth, limit check, signed bends and the feature list, plus how to send drawings that survive the exchange.
You will be able to: Take a drip edge from drawing to folder-ready data: confirm the format and units, letter the legs on the mold line, sum the girth, check the AFS limits, record the signed bends and write the feature list, stating every assumption.
Not startedStart →Lesson 4 · 11 min · 11 slides · 8 questions
CAD, CAM and shop data exchange: defects, verification and case study
The data defects that build a wrong part from a right-looking file, a case study from a coping drawing AFS used to test its reader, a pre-send check that catches them, and the lockout rule for clearing a jam.
You will be able to: Diagnose common data-exchange defects (wrong units, mirrored bends, swapped angle convention, misattributed dimensions, unreadable formats, stale revisions, duplicate sends) and document the evidence and the correction.
Not startedStart →
Practical task
Take one coping or drip edge drawing (your own, or a section made in the AFS CAD Detail Generator) from file to folder-ready data, and prepare a data-exchange job packet that another person could check without asking you anything.
Hand in
- The file format named, with how you know (its contents, not its extension) and, if it cannot be read, what you exported instead.
- The unit stated and confirmed against one dimension you already know, with any conversion shown at 25.4 mm per inch.
- A section with the material and thickness named, the legs lettered on the mold line, the girth arithmetic written out, and each leg, the girth and the bend rule for that material and thickness checked against the AFS limits.
- The bends listed with their signs, the angle convention named (included or bend), and the feature list written out from first straight to last.
- A verification record: an asymmetric check or a preview comparison, the revision checked, and who checked it.
- One defect from the lesson (units, mirror, convention, misattributed dimension, revision or duplicate send) analysed with its evidence and correction.
Rubric
| Criterion | Meets the standard when |
|---|---|
| Format | The format is identified from the file itself, and an unreadable file has the right export named. |
| Units | The unit is stated and confirmed against a known dimension; any conversion uses exactly 25.4 mm per inch. |
| Girth and limits | The material and thickness are named, legs are on the mold line, the girth sum is correct, and every leg, the girth and the bend rule for that material and thickness are checked against the AFS limits with the result stated. |
| Angles and feature list | Every bend has a sign, the convention is named, and the feature list alternates straight and bend or hem, starting and ending with a straight. |
| Verification evidence | The record shows a direction check, the revision checked and the checker, so a mirror or a stale revision would have been caught. |
| Defect analysis | The defect is described with its cause, its evidence and a correction that removes the cause. |