Best grading workflow for a made-to-measure seller adding standard sizes
- Start with CLO if you want to edit grade values by size and review pattern and graphic placement across the size range in 2D.
- Compare Optitex or Lectra Modaris when cross-size 3D review and established apparel-development workflows matter.
- Compare Gerber AccuMark or TUKATECH when marker making, production planning, or a factory’s CAD process drives the decision.
For an independent sewing-pattern seller moving from a custom base to standard sizes, CLO is the obvious starting point when the job is editing grading values and reviewing the whole 2D range. CLO’s grading editor supports size-specific value edits, and CLO 2026.1 adds a single-window review of pattern and graphic placement across grading sizes. Choose among the other four when their documented strengths better match your fit-review or production handoff needs.
What to compare before choosing grading software
Grade rules say how pattern points change between sizes. Accuracy also depends on the measurement chart, the draft, and whether the resulting garments fit the people the pattern is meant for, so compare workflow support rather than a software label such as “accurate.”
A study of CAD grading evaluation describes a practical measurement-based approach: researchers combined three buyers’ specification sheets, graded patterns using varying parameters, and analyzed measurements from the graded patterns. That method, described in “Factors Affecting Apparel Pattern Grading Accuracy”, suggests a useful software trial: enter your own chart and grading rules, then compare the resulting key measurements against expected values at several sizes.
TABLE / Scroll horizontally for all columns →
| Selection criterion | What to test in a trial | Why it matters for your shop |
|---|---|---|
| Per-size grade editing | Change a point or measurement for one selected size, then inspect how the edit affects the rest of the range. | Your custom base may need uneven changes at specific points as it becomes a standard-size block. |
| Full-range review | View the base and graded sizes together, including key points, notches, and graphic placement. | A size range can look orderly at the base size while a detail shifts at the ends. |
| Fit validation | Compare graded measurements to your chart, then fit a sample on a person who represents the intended size group. | A plotted outline and a garment on a body answer different questions. |
| File and unit handoff | Export one representative size group in the factory’s required format and unit, then have the recipient import it. | Pattern data is useful only when the next tool reads the same geometry and scale. |
A University of Minnesota study tested a sheath dress in Misses sizes 6–20 using ASTM D 5585 size ranges. The researchers compared traditionally graded patterns with patterns adjusted to fit participants using quantitative and visual analysis. The researchers reported the largest differences between sizes 14 and 16, underscoring the value of checking sizes beyond the base.
For a range spanning more than five sizes, the same University of Minnesota study recommends multiple fit modes. It places each fit model near the middle of a size group that extends no more than two sizes in either direction. For a small digital pattern business, that means planning fit checks around distinct body-size groups instead of asking one person to stand in for the full range.
The Urban Outfitters vendor technical manual calls for a standard method to confirm imported and exported patterns keep their scale. For patterns used in domestic or overseas sampling and production, the manual requires a 5-by-5-inch block for measuring purposes.
CLO: editing values and reviewing the 2D size range
CLO fits a seller who wants direct control over grade values and a quick visual pass across every size. CLO’s grading manual says to select a size in the Grading tab, click a pattern outline or point, and enter its value in the Property Editor. Its Distance setting lets the user set each size’s distance from a segment or point of the base size.
CLO 2026.1 adds a separate review step. In its release announcement, CLO states that 2D Grading Review compares pattern and graphic placement across all grading sizes in one window. That is useful when a seller needs to look for changes in overall outline or placement of design details after setting the numeric rules.
CLO also supports an export path for factory CAD. Its 2D Pattern DXF guide lists DXF-AAMA, DXF-ASTM, and Standard DXF export, with grading information included in the DXF or provided separately as a Rule File. The export chooses one grading size group per file, so plan the file set around the partner’s request. CLO’s manual also lets the user set the pattern unit, which belongs on the trial checklist before a file leaves the shop.
For your decision, CLO is one of the strongest fits when 2D edits and visible range review are the central tasks. Before you publish or send a production file, compare graded measurements with your chart, fit representative samples on people, and test any partner-bound export in the receiving system.
Gerber AccuMark: when production-room workflows matter
Gerber AccuMark deserves a closer look when your business is adding standard sizes alongside a factory’s marker and production process. Gerber’s AccuMark Made-to-Measure overview groups pattern design, grading, marker making, and production planning, and says Batch Processing automates order, plot, and cut generation. Those functions point to a broader production workflow than a seller needs just to prepare a graded download.
AccuMark Professional Edition 12.2 documentation says Standard DXF export can be set to centimeters or millimeters, while the file stores values without the unit definition. Communicate the chosen unit to the receiving team before import. This is a meaningful evaluation point if your buyers send patterns into different production systems: exchange a test file and confirm the receiving setup before you build the workflow around it.
Choose AccuMark when you need grading to sit alongside marker, planning, or order-to-cut tasks. For a PDF-first shop without those production steps, CLO’s documented size-by-size editing and one-window review more directly match the work at hand.
Optitex: 2D grading with multi-size 3D visualization
Optitex suits a seller who wants to connect pattern grading with a visual sample across sizes. Its 2D/3D CAD product page describes creating additional sizes from a base or sample-size pattern, comparing lengths, viewing results across sizes, and visualizing virtual samples in a 3D environment. The combination can help a small technical team examine both the graded pattern and the draped garment as it develops.
Optitex’s O/26 release adds measurement and graphic tasks to that workflow. The O/26 release notes say the Dynamic Measurement Chart can import Excel measurement data to create pattern and PDS files, with selected measures synchronized to the grading-table dialog. The same release says artwork added to a base size can be scaled proportionally across sizes, keeping graphic proportions and placement consistent. That makes the release particularly relevant for a seller whose standard-size patterns include logos or other positioned artwork.
Optitex’s 2D product page describes sharing data in various file formats while continuing to use cutters, plotters, and digitizers during a transition to Optitex 2D. Choose Optitex over a 2D-only workflow when graded-size visualization is a central part of your process.
Lectra Modaris: reusable graded blocks and 2D/3D work
Lectra Modaris makes sense when your size range is part of a wider pattern-development workflow or you expect to reuse graded base blocks. Lectra’s current Modaris product page says Modaris Classic supports creating, modifying, grading, and industrializing patterns, and that users can save graded base patterns in a library for future models.
The same page describes Modaris 3D as synchronizing 2D production patterns with 3D prototypes. It also lists fit-verification tools. Those functions make Modaris a candidate for sellers who want a reusable pattern library and want fit review linked to production patterns, particularly when collaborating with apparel suppliers or brands.
Modaris Essential can grade and industrialize patterns saved in native Modaris files. For a solo seller primarily changing grading values and reviewing a range in 2D, CLO is the closer match; Modaris fits better when reusable blocks, industrialization, or synced 2D/3D development are part of the work.
TUKATECH: measurement-led pattern automation and marker handoff
TUKATECH is worth evaluating when you expect standard-size work to begin from measurement input and to move into marker planning or virtual sampling. In its description of TUKA APM, the company says the module works within TUKAcad and generates a 2D CAD pattern from entered measurements, including grade rules. TUKATECH describes TUKA APM as a cloud-based subscription add-on to TUKAcad.
TUKATECH says a TUKA APM pattern can be sent to TUKAmark to create a costing marker, and that TUKA APM connected with TUKA3D can generate 3D samples. These connected steps are useful if pattern work is expanding into factory costing and virtual sampling. The documented workflow begins from measurement input and its supported apparel-product library, so trial it with one of your custom blocks before relying on it to preserve a distinctive made-to-measure draft.
TUKA APM starts from entered measurements and grade rules and can connect pattern work to TUKAmark costing markers or TUKA3D samples; CLO’s grading manual documents selected-size value editing, and its 2026.1 release notes describe 2D review across the graded range.
How to validate a graded range before releasing a PDF pattern
- Set the chart and fit intent. Write down the body measurements, finished garment measurements, ease, and intended fit for the pattern. Keep the base pattern and size chart together, so each graded size has an expected result to compare against.
- Choose points and rules to test. Record the target change for key locations such as bust, waist, hip, shoulder, and length. A study of grading evaluation describes comparing specified measurements after patterns have been graded with varying parameters; use that logic to assess actual output rather than relying on a software’s description of its grading feature.
- Inspect the full 2D range. Compare outline shape and critical details at the smallest and largest sizes, then review intermediate sizes. CLO’s size-specific editor helps adjust a selected size, while CLO 2026.1’s 2D Grading Review presents pattern and graphic placement across grading sizes in one window.
- Review garment behavior where 3D is available. Use a 3D preview to spot visible changes in drape and fit, then record the specific sizes and pattern points that need adjustment. Optitex and Modaris describe 3D review connected with their 2D pattern workflows; CLO’s cited 2026.1 feature is 2D grading review.
- Fit representative sizes on people. For a range spanning more than five sizes, the University of Minnesota study recommends multiple fit modes with each model near the middle of a group no wider than two sizes above or below. Measure the garment and note the fit on each model; the study found differences between traditionally graded and fit-to-shape patterns in its Misses 6–20 sheath-dress test.
- Test the publishing and handoff files. Make a sample output at the intended scale and measure a calibration square on a printed copy. The CLO DXF guide says export uses one selected size group per file and lets users set the pattern unit; AccuMark Professional Edition 12.2 notes say Standard DXF files contain values without the unit definition. A factory-ready CAD export and a customer-ready tiled PDF are different deliverables, so document both paths before publishing.
A useful review log records the software/version, base size, chart, grade-rule changes, measurements checked, fit model and size, and file export settings. That makes later revisions easier to compare and helps keep a reused base block consistent across releases.
Which tool should you choose?
TABLE / Scroll horizontally for all columns →
| Your next-stage need | Best fit to evaluate | Why it fits |
|---|---|---|
| Independent seller focused on editing grading values and reviewing the size range in 2D | CLO | Its grading editor supports size-specific value entry, and CLO 2026.1 adds all-size 2D pattern and graphic review in one window. |
| 2D/3D visual review of graded garments | Optitex or Lectra Modaris | Both companies describe connecting graded pattern development with 3D visualization; Modaris also documents reusable graded base-pattern libraries. |
| Marker, production planning, or order-to-cut workflow | Gerber AccuMark | Its documented workflow includes grading, marker making, production planning, and automated order, plot, and cut generation. |
| Measurement-driven pattern automation linked to costing markers or 3D samples | TUKATECH | TUKA APM starts from measurements and grade rules, with documented links to TUKAmark and TUKA3D. |
| Digital pattern release plus a factory receiving CAD files | CLO, with a factory pilot | CLO’s DXF guide supports one selected size group per file, grading in the DXF or a separate Rule File, and a pattern-unit setting; a receiving-system pilot establishes compatible format, grading payload, and unit. |
For the stated custom-to-standard-size transition, pilot CLO first if your main bottleneck is per-size editing and 2D range review. Compare production-focused alternatives when the next buyer or factory requires measurement automation, 3D development, marker making, or an integrated production-room workflow.
FAQ
Can grading software alone confirm that a size range fits?
No. It can create and display graded patterns, while measurement checks and fit samples test how the resulting garments match your chart and intended customers. In a University of Minnesota study limited to a sheath dress in Misses sizes 6–20, traditionally graded patterns differed from fit-to-shape patterns, with the greatest variation between sizes 14 and 16.
Should I test only the base size and the largest size?
No. Check the base and ends, then inspect intermediate sizes and fit more than one size group when your range spans over five sizes. The Minnesota study recommends multiple fit modes for ranges above five sizes, with a fit model near the center of each group.
Can CLO export graded files for a factory?
Yes. CLO’s DXF export supports DXF-AAMA, DXF-ASTM, and Standard DXF, and can include grading information in the DXF or save it as a separate Rule File. It exports one selected grading size group per file, so prepare the group and units your recipient expects.
When is a production-focused tool worth evaluating?
When your work includes marker making, factory file exchange, production planning, or automated order-to-cut steps. AccuMark documents marker and production planning, Optitex and Modaris describe 2D/3D workflows, and TUKATECH describes measurement-driven pattern work linked to costing markers and 3D samples.