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Release notes · 11 – 14 Sept 2026

Klay 0.0.40

Bend and pose your sculpture along curves, hear your brushes and the weather, and set things on fire.

New

Curve deformer

Draw a curve through your model, then bend, twist and pose it like a rig, with branch curves riding along with their parent.

Tools›DeformerPoly meshes only; curves are not saved in the scene yet
Sound for sculpting and weather

Every brush makes a sound that follows your pressure, speed and brush size, and rain and thunder can be heard too, with thunder arriving from where the lightning struck.

Top bar›SoundPanels›Stroke SoundOff by default
Fire material

Make any material burn, with rising flames, embers, smoke and a flickering light on its surroundings, starting from presets like Campfire, Candle and Blue gas.

Material›Shading model›FireDesktop only
Full PBR specular

New highlight models, anisotropy, rainbow diffraction, sparkling flakes under a clear coat, orange peel and crackle glaze, matching in the viewport and in raytracing.

Material›Specular
Retro CRT

Turn the whole window, panels included, into an old terminal tube, with eleven phosphor profiles that remember your tweaks.

Post Processing›Retro CRT
Windows installer and updates

Install Klay like any app with a quick first launch, open .klay files with a double-click, and update from inside Klay when a new version is out.

Welcome screen›Update
Make the interface yours

Pick an accent colour, scale the panels from 90 to 200%, and tune roundness, brightness, saturation and hue.

Settings›Theme
Brush reach modes

Choose whether a brush touches everything in its ring, only the surface connected to it, or everything under it at any depth.

Stroke›ReachMask›Reach
Privacy switch

Klay sends a small anonymous usage report at launch, never your files or scenes, and one switch turns it off.

Settings›PrivacyOn by default

Improved

Settings right on the top bar

Wire, Focus, Symmetry and Raytracing each have an arrow that opens their settings, Focus can pick its colour, and the view switch names the mode you are in.

Top bar
Tap S for the Lantern

A quick tap of S jumps to the Lantern tool and a second tap takes you back, while holding S still moves the lights.

S
Duplicate and mirror groups

Duplicate copies a whole group with everything inside it, and Duplicate X makes a mirrored copy.

Outliner›Group menuCtrl D
Scenes keep their own look

Post effects and weather are saved in the scene, and a new scene starts with them off.

Older scenes open with post effects off
Rain and haze reach the horizon

Rain falls all the way to the distant ground, and haze blends into fog and clouds, in VR too.

Lighting›Weather›Rain
Your own weather defaults

Set as default on any Volumetric or Weather section makes every new scene start from your values.

Lighting›VolumetricLighting›Weather
Settings survive updates

Your settings, brushes and materials live in Documents\Klay, and updates keep everything you changed.

Rests when you are elsewhere

When Klay is not the active window it stops rendering, so your graphics card cools down, and no terminal window opens behind it.

Fixed

  • Rebuild Subdivision Levels no longer loses the top levels of imported models
  • Exporting several objects no longer merges them into one
  • Stepping quickly through subdivision levels, then sculpting, could crash
  • Group, ungroup and duplicate shortcuts work with the mouse over the outliner
  • The denoiser remembers your choice
  • Dragging a light no longer causes small freezes
  • Velvet and felt sheen now shows in raytraced renders
Klay 0.0.40 · September 2026 + smaller fixes and speed-ups