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Installing a converted brush in Clip Studio Paint

A converted .sut installs with a double-click and you're done — custom tips and grains travel inside the file and draw straight away. If the download is a .zip, the PNGs beside the .sut are spare copies of the tip and grain, useful if you ever want to register them as materials by hand. Here's the whole process.

Step 1 — Install the .sut

  1. Desktop: double-click the .sut file, or drag it into the Sub Tool palette in Clip Studio. It appears as a new sub tool immediately.
  2. iPad / phone: open the Sub Tool palette menu (the small menu icon at the top-left of the palette) and choose Import sub tool…, then pick the .sut from Files.

You're finished. The steps below are only for the rare case where you want the tip and grain images as standalone materials too.

Step 2 (optional) — Register the spare PNGs as materials

If your download was a .zip, the PNG file(s) beside the .sut are spare copies of the brush's tip and/or grain. The brush doesn't need them — they draw from inside the .sut — but registering them as materials lets you reuse them elsewhere, for example the grain as a paper texture for other brushes:

  1. Open any canvas and drag the PNG onto it (or use File › Import). It lands as a new layer.
  2. With that layer selected, choose Edit › Register Material › Image…
  3. In the dialog, tick “Use for brush tip shape” (for a tip) or “Use for paper texture” (for a grain), give it a location in the material library, and press OK. Then delete the temporary layer.
  4. Select the installed brush, open its Sub Tool Detail panel, and pick the material you just registered under Brush tip › Tip shape (or Texture for grain). The SETTINGS notes included in the zip say which goes where.
Clip Studio menu mock-up, with Register Material ▸ highlighted among Edit, Undo, Cut, Copy, Preferences.EditUndoCutCopyRegister Material ▸Preferences

Why do the PNGs still ship?

Belt and braces. The tip and grain are embedded in the .sut and draw on their own, but the spare copies cost nothing, make the imagery reusable in other tools, and give you a by-hand fallback if an unusual Clip Studio setup ever refuses the embedded ones.

Troubleshooting

The stroke looks solid / has no texture. That shouldn't happen — the grain is embedded. As a quick fix, register the spare grain PNG as a paper texture and select it under Texture in Sub Tool Detail — and please send a note through the feedback button so the file can be looked at.
The tip is a plain circle. Same story — the tip is embedded, so this is worth a feedback report. The by-hand fix: register the spare tip PNG with “Use for brush tip shape” and select it under Brush tip › Tip shape.
I can't find Register Material on iPad. It's under the Edit menu in the top command bar. If the bar is hidden, tap the wrench icon to show the interface, or use the “Touch and hold to show menu” gesture.
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