by LaXHeXLuX·Workflow
Images © LaXHeXLuX. Used for product review; image policy.
Trimmer earns a spot in the Blender extensions library as a focused trim-sheet tool: six releases, a GPL v3 license, and a single four-star review. Its scope is narrow and clear, handling trim-sheet mapping from face layout through Fit or Fill placement.
Trimmer is a Blender add-on that simplifies mapping an existing trim-sheet to a model. The workflow starts by creating a plane divided into faces that reference the positions of trims on the trim-sheet, using techniques such as the Knife tool, loop cuts or edge subdivision. You then add those trim locations to the add-on panel and apply a trim to a selected face or faces.
After installing, a panel named Trimmer appears in the 3D viewport sidebar, opened by pressing N. Each trim you add shows as a row, and the X button removes one. When applying a trim you choose Fit, which fits the selection inside the trim without stretching, or Fill, which stretches the selection to fill it. Mirror, Rotate and Confirm options then appear to adjust and finalise the placement.
Version 0.3.0 added grouping trims by trimsheet and reordering trims within a trimsheet. Trimmer is written in Python, released under the GNU General Public License v3.0 or later, and requires no special permissions.
Trimmer is best for blender artists mapping existing trim-sheets onto their models.
Trimmer is completely free to download and use.
Trimmer is compatible with Blender 4.2 LTS and newer, so it runs on the 4.2 long-term-support release and any later version. Installation goes through Blender's add-on system: open Edit → Preferences → Add-ons → Install from Disk, browse to the downloaded zip, and confirm. Once installed, it appears in the add-ons list, where you can enable, disable or uninstall it. The developer notes the extension requires no special permissions, which keeps the setup straightforward inside Blender.
Trimmer installs like a standard Blender extension. You can drag and drop the add-on into Blender, or download the zip and use Install from Disk: open Edit → Preferences → Add-ons → Install from Disk, browse to the file, and select it. After installing, enable it in the add-ons list. A new panel named Trimmer then appears in the 3D viewport sidebar, which you open by pressing N. From there you start adding trims and applying them to faces.
Trimmer 0.3.0 added the ability to group trims by trimsheet and to reorder trims within a trimsheet. This affects how the trim rows are organised in the Trimmer panel, where each trim you add appears as a row that can also be removed with the X button. The core workflow stays the same: create a plane divided into faces that reference trim positions, add those trims to the panel, then apply them to selected faces with the Fit or Fill options.
Trimmer offers two ways to apply a trim to a selection. The Fit option fits the selection inside the trim without stretching it, while the Fill option stretches the selection to fill the trim. After you apply a trim, Mirror, Rotate and Confirm options appear. Mirror reflects the applied selection across the Y-axis, and Rotate behaves differently depending on the fitting choice: with Fit it is a slider that rotates the selection by a number of degrees, and with Fill it is a button that rotates the selection shape edgewise.
Trimmer is listed as free here and is distributed under the GNU General Public License v3.0 or later. The extension states it requires no special permissions. For current licensing terms, downloads, and source code, check the developer's page on GitHub, where the releases and README user manual are hosted. Since it is released under the GPL, you can review the Python source that makes up the whole project alongside the documented trim-sheet workflow.
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