September 29, 2026

How to Plan a First 3D Pattern-Grading Rollout with CLO

Choose measurement-led drafting or existing-pattern grading for a first CLO3D rollout, then check sizes, construction, 3D fit and handoff before approval.

First-rollout grading decision

• Use CLO 2026.0 Pattern Drafter when measurements are inputs during pattern drafting and you want the workflow to generate POMs and apply grading.
• For an existing base-size pattern, begin with the approved pattern and its current grading method. CLO can apply a matching RUL grade-rule file to a selected pattern; Browzwear documents a separate VS Auto Grading plugin marked Beta.
• Treat the generated size range as a review candidate. Approve it only after measurement, construction, and 3D fit checks are recorded for the style.

A first 3D grading rollout works best when the team chooses one clear starting point: create a pattern from entered measurements, or grade an existing approved base pattern. CLO has a documented measurement-led drafting route in its 2026.0 release. For an existing pattern, CLO’s conventional grading workflow applies a matching RUL rule file, while Browzwear’s documented VS Auto Grading plugin starts from a single-size pattern and a measurement chart. These are different inputs, so first identify the asset you already trust.

Grading creates patterns in multiple sizes. Browzwear’s grading overview defines grading as creating patterns of different sizes for a garment. In a rollout, the practical task is to preserve the approved base and size definitions, make or apply a proposed size range, and decide which checks make that range ready for production review.

1. Choose the grading problem before choosing automation

Separate a measurement-led drafting task from the size expansion of an existing pattern. A measurement-led task begins with measurements entered as drafting inputs; an existing-pattern task begins with a pattern whose geometry, size, and construction have already been approved. The distinction determines whether your first tool test should measure how well the workflow creates a draft or how well it carries grading through your established pattern.

Start with the first style you can describe in one sentence. For example, “create a first size range for a woven shirt from our approved base-size pattern” is an existing-pattern task. “Draft a skirt using a specified set of measurements and add size grading during drafting” is measurement-led.

Write down the inputs that belong to that task before opening a 3D file. A compact input list includes the style and pattern identifier, base size, size range, approved measurement chart and revision, measurement units, and the person or team responsible for the grading rules. Add the intended fit or product use where it affects the dimensions the team will inspect. This short brief gives the pilot a fixed starting condition, so a review can distinguish a grading issue from a change in the source chart or base pattern.

For measurement-led drafting, CLO 2026.0 Pattern Drafter can generate points of measure (POMs) and apply grading when you enter measurements during pattern drafting; the release notice also describes flexible editing. The feature is relevant when the measurements are part of the drafting inputs. For an existing base-size pattern, choose an existing-pattern method and retain that pattern as the control asset while you assess the resulting size range.

Use a small pilot style with recognizable checks. A shirt, skirt, or simple trouser can make it easier for a team to see how body dimensions, garment POMs, and seam relationships behave across sizes. Choose the style whose measurement points and construction your technical team can already review with confidence.

A workable first-pilot question is: “Can our chosen workflow turn this approved input into a complete range that our team can inspect and approve?” Keep that question separate from broader rollout questions such as adoption, cost, or production-time effects.

2. Keep an approved source of truth through the pilot

Keep the approved base pattern and the approved body measurement chart as separate controlled inputs. The chart describes intended body dimensions; garment POMs describe the finished garment measurements that your team chooses to check. Record each with its own name, size range, units, revision, and approval status so one cannot be mistaken for the other during edits.

ISO 8559-1:2017, the International Organization for Standardization’s body-measurement reference, describes anthropometric measurements that can support physical and digital anthropometric databases. It also says the measurements can guide clothing practitioners as they select population groups and create size and shape profiles for garment development and fit mannequins. For a rollout, use that principle to document what each body measurement means and how it is defined in your chart.

ISO 8559-2:2017 addresses size designation: its stated aim is to indicate the body dimensions of the person a garment is intended to fit. The standard’s size designation approach depends on body measurements determined according to Part 1. This distinction helps a team avoid treating a label such as “M” or “Size 10” as a complete set of grading inputs. Preserve the actual dimensions and the chart revision that define each size in your program.

Use a simple change record for the pilot. For every grading pass, record the source pattern identifier and revision, the chart and size range, the grade-rule or drafting method, the software workflow used, the date, the reviewer, and the edits made after inspection. If the team changes a bust or chest increment, sleeve length, or base-size seam during the test, record the specific edit and the reason. A later reviewer should be able to tell which result came from the initial workflow and which resulted from a manual adjustment.

Keep a clean copy of the approved base and a separate working copy for the test. Give the generated range a provisional status until it passes the team’s checks. This workflow separates “the system created a range” from “the technical team approved this range.” Use 3D results alongside your team’s pattern, fit, construction, and handoff standards for technical approval.

For an existing size chart, preserve the source file alongside the project record. If the chart comes from a specification sheet, note the source and revision; if the team prepares a new chart, name the owner and approval date. Record whether each value is a body measurement, garment measurement, or pattern dimension. This classification matters because the same words, such as waist or hip, can refer to different measurement objects in a technical conversation.

3. Use CLO when measurements lead the drafting workflow

CLO’s documented measurement-led route is Pattern Drafter in CLO 2026.0. CLO’s 2026.0 release notice says Pattern Drafter can automatically generate POMs and apply grading from measurements entered during pattern drafting, with flexible editing capabilities. That makes CLO relevant when your first rollout needs measurements to feed the drafting step and grading to be applied as part of that drafting workflow.

Before the first session, prepare a consistent measurement input set and agree on its units and size names. Align the team on how a POM is named and where it is measured on the finished garment. When measurement definitions differ between the chart and the pattern review sheet, resolve the labels before entering values so the pilot evaluates pattern work rather than chart interpretation.

A useful first pass is to draft one style using the intended measurement set, review the generated POMs against the team’s measurement definitions, then inspect the graded pattern pieces and 3D garments. Keep a record of edits made while drafting. If a POM or grading result requires adjustment, note whether the cause was a measurement input, the drafting construction, or a technical design decision.

4. For an existing base pattern, compare its inputs and outputs

CLO documents one such conventional route: open the RUL file that corresponds to the pattern, assign the size group to the selected pattern, and add sizes to the group as needed. This starts from a base pattern plus grading rules, which differs from Pattern Drafter’s measurements-entered-during-drafting route.

CLO’s Add/Apply Grading guide describes opening the RUL grade-rule file that corresponds to the pattern, then assigning grading to the selected pattern through the Size Group controls. Add new sizes from the Size Group controls to expand the selected range. In practical terms, verify that the rule file belongs to the pattern version in your pilot and that the intended size group is assigned to the correct pieces before reviewing the grade.

Browzwear University’s VStitcher pattern-shape course lists importing DXF and RUL tables, previewing a graded nest, aligning grade by grainline, adding sizes and grade points, and simulating a graded pattern. The course topics also include pairing an avatar size set with a graded garment. These documented operations make VStitcher a relevant candidate when the team’s existing assets and review process use these grading inputs and size-run checks.

Browzwear’s separate VS Auto Grading plugin guide describes a Beta route: it starts with a single-size pattern and uses a measurement chart to calculate and apply grades in VStitcher. The guide accepts CSV charts and tech-pack or spec-sheet PDFs. Automatic PDF table extraction requires an AI provider configured in Settings; without one, the guide describes manual copy-paste from extracted page text.

Preview computes grade rules without writing them to the garment; Apply Grading then applies them. Use Preview as a review gate: compare the measurement table, piece classifications, and size assignments with the approved technical plan, then apply grading after the reviewer accepts them.

5. Keep avatar fitting separate from generating a size range

Avatar fitting and pattern grading answer related but different questions. A size range is a set of graded patterns; avatar fitting changes the pattern to fit an avatar’s size. Keep the size chart and the selected avatar-size assignment explicit in a pilot so a team can tell which task a result represents.

CLO’s Auto Fitting instructions describe the feature objective as automatically fitting patterns to an avatar’s size. The guide says Auto Fitting supports CLO avatars and custom avatars with a Fitting Suit applied. It also documents adjusting avatar size and draping the 3D garment on the avatar.

For a graded size range, check whether each intended size is represented by the correct graded pattern and avatar size before judging fit. A garment that drapes on one avatar provides information about that pairing. A garment range requires a broader review across the size set, including the pattern dimensions and grade behavior between the base and surrounding sizes.

The size chart and grade rules define the size-range reference; the avatar profile identifies the specific fit review. Record the avatar identity or size profile used for each review, alongside the pattern size and chart revision. If a visual fit check leads to a pattern adjustment, record which size and POM motivated the edit, then rerun the relevant checks across the range. This preserves the connection between a visible 3D outcome and the technical change made in 2D.

A simple assignment table in your project record can list one row per reviewed size, the pattern version, the avatar profile, the garment POMs checked, and the reviewer’s decision. That helps prevent a common process mix-up: approving an avatar-size adjustment while assuming the whole graded range has also been reviewed.

6. Validate the graded range across measurements and construction

Review the garment’s measurement points and construction relationships across the size run, not only the base size. ISO 18890:2018, Clothing, Standard method of garment measurement, in the Ethiopian Standards Agency-hosted text, defines main garment measurement points and describes a method for measuring garment dimensions; it also allows interested parties to determine additional measurement points. Use an agreed method for the POMs that drive your approval so reviewers measure the same locations in the same way.

Measurement and pattern checks

• Align chart labels and garment POM definitions. Keep size labels and units with the body-measurement chart revision and garment POM sheet, and use consistent names for each measurement point. ISO 8559-1 gives a reference for defining body measurements; ISO 18890 gives a basis for measuring garment dimensions. Keep those two types of values clearly identified.
• Compare core garment measurements by size. Review the dimensions that define the style’s fit, such as chest or bust, waist, hip, body length, sleeve length, and shoulder width where those points apply. Record the measured value, target, and decision for each size. Set acceptance against your team’s approved tolerance and fit intent for each POM.
• Inspect the base size and the ends of the range. Check the smallest and largest planned sizes as well as the base size. The range ends can reveal a progression problem that a base-size-only review will miss. Add a middle size if the intended range, style construction, or team’s review protocol calls for it.
• Trace grade changes at critical points. Inspect how the points around shoulder, armhole, sleeve cap, waist, hip, and hems move across the size set where they apply. Compare the nested outlines and note any abrupt shift or change in shape that calls for technical review.
• Check construction relationships. Compare seam lengths at joined edges, notches, dart positions, internal construction lines, and paired pieces such as left and right components. Confirm that relevant seams and markings remain consistent with the approved construction and that piece names and size assignments remain intelligible to the team.
• Review details specific to the style. Inspect features such as a placket, pocket placement, collar, waistband, or closure where those parts affect fit, balance, or assembly. Record the designer’s decisions about proportion, placement, or construction intent alongside the measurement findings.

3D fit and review checks

• Review every selected size on its intended avatar. Record the avatar profile, pattern size, and review scenario for each fit assessment. Inspect the silhouette and the fit areas the style brief identifies, then record findings by size and POM.
• Inspect movement or posture scenarios that matter to the product. Use the team’s appropriate poses and material settings to assess the garment’s visible behavior. The review should name the avatar and the scenario so another reviewer can understand what was assessed.
• Link each fit observation to the 2D pattern and measurement that prompted it. When a fit concern appears, identify the corresponding pattern piece, edge, or measurement before editing. Record whether the resolution changes the pattern, the measurement target, or the approved fit intent.
• Keep grade approval separate from visual review. A 3D fit review contributes evidence to a technical decision; the team’s designated reviewer still records acceptance or requests a revision under its own approval process.

Use a single issue log for all sizes. A useful entry records size, POM or construction area, target, observed result, source pattern revision, reviewer, and action. Mark each issue as accepted, revised, or pending with a short rationale. This lets the team resolve local corrections without losing track of which sizes need rechecking after a change.

7. Move from a 3D test to a controlled handoff

Move a range toward production in explicit gates: freeze the inputs, generate or apply grading, inspect the range, resolve issues, approve the pattern set, then prepare the agreed output. Each gate should have an owner and an identifiable record. This keeps the 3D test connected to the production asset that the technical team has approved.

For a measurement-led CLO test, record the entered measurements, drafting revision, generated POMs, grading edits, and reviewed sizes. For an existing-pattern test, record the base pattern, matching RUL or grading method, assigned size group, and all manual edits. In either case, preserve a before-and-after version of the relevant pattern files and link the approved chart and issue log to the final review.

Choose an exchange format with the receiving team before exporting. CLO’s 2D Pattern DXF Import/Export guide documents DXF-AAMA, DXF-ASTM, and Standard DXF options. It also says grading information can be included in the DXF or exported separately as a Rule File, and that only one size group can be selected for export per file. Set the Scale option to the pattern unit expected by the receiving system, then include that unit in the handoff record.

Browzwear’s file-type documentation says pattern files may be exported as DXF ASTM or DXF AAMA. That gives teams using VStitcher a documented format point to confirm with their downstream pattern or production system. Test the actual receiving path with the intended file, size group, rule data, and pieces before using it as the controlled handoff.

ASTM D6673 describes conventions for exchanging two-dimensional sewn-product pattern data and related information such as grade-rule tables. ASTM says the format uses DXF for pattern-piece data and a specially formatted ASCII file for grade-rule tables; it also limits the transfer to pattern pieces within a style and associated pattern-piece and style information. In your handoff checklist, treat pattern geometry, grade rules, product specifications, and approval records as separate information categories and confirm each required category reaches its owner.

A concise release checklist for the first approved range is:

1. Attach the approved base pattern, measurement-chart revision, size labels, units, and grade-rule source to the release record.
2. Link the graded size set and all 2D and 3D review records to the same pattern revision.
3. Resolve or assign an owner to every fit, construction, and measurement issue in the log.
4. Confirm the chosen file format, size group, grading data, units, and pattern pieces with the receiving team.
5. Mark the released pattern set with its approval status, revision, approver, and date; archive the pilot inputs and review record together.

The next rollout step is a second controlled test on a style with a different construction or measurement profile. Reuse the same record structure, but define new POMs and review checks for the new style. Compare findings across pilots before your team standardizes a broader workflow.

Continue the pilot with the CLO Manual for the Pattern Drafter, grading, Auto Fitting, or export procedure used in your selected workflow.

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