Bracelet Auto Fit — Fit a bracelet or bangle to your avatar's wrist in one click [VRChat / Unity] (Free trial available)

Bracelet Auto Fit is a Unity editor extension that fits a bracelet or bangle to your avatar's wrist in one click. Choose the left or right hand; it measures the wrist and sets the bracelet's size, position and direction. It looks for the ring's axis, so bracelets modeled in different directions are turned to match the arm. The bracelet follows the arm (Modular Avatar BoneProxy if present, otherwise it becomes a child of the LowerArm bone). Original meshes and textures are not modified. Undo with Ctrl+Z.

No bracelet or avatar models are included (tool only).

Free vs Full

• Free trial: try the one-click fit on your own avatar and see the result. Preview only: it goes back after 30 seconds, or when you save the scene, enter Play mode, press Ctrl+Z or close the window.
• Full: keeps the result, plus sliders for position on the arm (elbow to wrist), looseness, size and rotation around the arm.

Try the Free trial with your own bracelets and avatar first to see how it fits. Importing the Full version over the Free version replaces it.

Carefully tested before release

Made by Kotokoto Lab, an independent creator. This version was tested on 3 popular free avatars plus the chibi version of one of them, with free bracelets from BOOTH and our own samples. The results — including where it does not work well — are written below.

Tested with 5 self-made sample bracelets (a bangle, one with a bead, a bead chain, a wide cuff and one made too small; modeled straight, sideways and tilted) on both wrists of the 4 avatars (40 combinations): all went on the wrist with no bracelet vertices inside the arm. Also tested with 4 bracelets from 3 free BOOTH items on both wrists of the 4 avatars: 31 of 32 combinations went on the wrist; a chain bracelet was not detected on one avatar's left wrist (a note is shown) and came out a little loose in the other 7 combinations. On the 3 adult-sized avatars with 4 samples (2 plain, 2 with BoneProxy), position and size stayed the same after the upload-time processing (Modular Avatar / Avatar Optimizer).

With long sleeves, the bracelet goes on the skin inside the sleeve and is hidden; to put it over the sleeve, also check the clothing mesh in "Arm skin meshes" (checked on the 4 avatars). Wrists are not round, so there is a gap on one side. Open bangles and chain bracelets may not be detected. If BoneProxy points to a bone outside the chosen arm, a note is shown; set its Target to that arm's bone.

Requirements

Unity 2022.3 (tested on 2022.3.22f1), Humanoid avatar with LowerArm and Hand bones. Works without Modular Avatar.

How to install

1. Download the .unitypackage (Free or Full) and drag it into the Project window, then click Import.
2. Open Tools > Bracelet Auto Fit. The window has an "English" checkbox at the top.

Terms

OK for personal and commercial use. Do not redistribute or resell the tool. Follow each creator's terms for avatars and bracelets. Use at your own risk; back up important projects first.

Questions or bug reports: please send a message through the shop.