3D Virtual Sample

Definition and Overview

A 3D virtual sample is data used to stitch patterns together in apparel 3D software and place them on a human body model called an avatar for checking. Before cutting and sewing the actual garment, it is used to visually review the silhouette, seam positions, length feel, and more.

Although it includes the word sample in its name, it is not a finished product or a sewn physical sample. It is a predictive model that reflects fabric physical properties, sewing conditions, avatar dimensions, and simulation settings, and there are items that cannot be replaced by checking with an actual garment.

Parts Used and Role

It is used to check the entire garment made up of patterns, such as the body, sleeves, collar, pockets, and facings. By setting the stitching of each part, darts, tucks, gathers, and plackets, it checks consistency between the design and the pattern.

In the planning stage, it is useful for comparing design ideas; after pattern development, for checking measurements and ease allowance; and during sales discussions, for sharing colors, patterns, and specifications. Because revisions can be shared as data, it is also used to align understanding among stakeholders.

Materials and Types

A 3D virtual sample itself is not a physical fabric, so it has no material or weave type. On screen, digital material data such as fabric thickness, weight, stretch, flexibility, and surface images are set to reproduce drape and appearance.

Digital material data does not completely reproduce the characteristics of the actual fabric. In particular, pile length, brushed texture, sheerness, luster, the way a pattern appears, and behavior in stretch or on the bias should be checked together with actual swatches.

Main Uses

It is used for design review before making an actual sample, pattern corrections, and checking the placement of colors and printed patterns. It is also suitable for comparing multiple colorways and material ideas and for advancing review before finalizing specifications.

It is also useful for sharing revision instructions because planning staff, designers, pattern makers, production control, and sales can all review the same images and data. However, final judgment on mass production suitability still requires a sewing specification sheet and an actual sample.

• For patterned fabrics, the grain line, pattern repeat, and cutting position are set to check the appearance.
• For trims and components, the size, thickness, and attachment position are entered to check interference and balance.
• For avatars, dimensions close to the assumed size are used to align the comparison conditions for the worn state.

How to Choose, Handling, and Sewing Notes

When creating a 3D virtual sample, prepare patterns, fabric physical properties, and accessory information with the accuracy suited to the purpose. For early-stage design comparisons, simple settings may be sufficient, but as you approach specification finalization, input based on the actual fabric and actual dimensions is required.

There are limits to accurately judging seam puckering, step differences caused by thickness, how seam allowances lie, shape changes caused by interlining, and the finished look after pressing in the data alone. Matters related to sewing processes and mass production conditions should be checked with a toile or actual sample.

• Match the pattern grain line, seam allowance, notches, and sewing sequence against the data for actual production.
• Fabric shrinkage rates and lot differences should not be finalized only from on-screen settings; confirm them with the actual fabric.
• For prints and checks, confirm pattern matching at seams and the fabric required for cutting separately.
• Record the data version, fabric settings used, and avatar dimensions, and manage them among stakeholders.

Frequently Asked Questions