by SIMPOLIUM·Modeling
Illustrative cover generated by AnyPlugins — no product screenshot available.
Stands out in the Autodesk App Store library as a free, single-focus utility for spline diagnostics. Note the custom installer step during setup.
Spline Check is a free diagnostic plugin for 3ds Max from SIMPOLIUM, focused on inspecting splines. It identifies and displays open splines directly in the viewport, detects spline self-intersections, and shows the total number of segments in a spline.
The plugin supports 3ds Max 2017 through 2023, a range noted in its 1.3.0 release from August 2022. One detail to note before installing: it uses a custom installer rather than the standard App Store installer, so follow the developer's setup steps rather than the usual App Store flow.
Its scope stays narrow by design: it detects open splines directly in the viewport, flags self-intersections, and reports the total number of segments for the splines in your scene. As a free utility, it stays focused on those three diagnostic checks.
Spline Check is best for 3ds Max users who need to check splines for open ends, self-intersections and segment counts.
Spline Check is completely free to download and use.
Spline Check supports 3ds Max 2017 through 2023, so it works with the 2023 release. That version range was set in the 1.3.0 update from August 2022. If you're on a newer 3ds Max release, that isn't listed among the supported versions here, so check the developer's page on the Autodesk App Store to confirm current compatibility before installing. Within the 2017 to 2023 range, the plugin's diagnostic functions, finding open splines, detecting self-intersections and counting segments, remain the same.
Spline Check uses a custom installer rather than the standard Autodesk App Store installer. That's the one thing to watch during setup: the usual App Store install flow won't apply here, so download the plugin from the developer's page and follow SIMPOLIUM's own installation steps. The specific step-by-step instructions aren't spelled out here, so refer to the developer's documentation on the Autodesk App Store for the exact process. It's built for 3ds Max 2017 through 2023.
Spline Check is listed here as free. It's described as a free diagnostic plugin for 3ds Max, so there's no cost noted for downloading it. Licensing terms can change over time, though, so for current details it's best to check the developer's page on the Autodesk App Store before you install. The free listing covers its three core functions: identifying open splines in the viewport, detecting self-intersections and displaying the total segment count of a spline.
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