Larklock · Blender tools for makers

Blender add-ons that turn designs into things you can carve, print and film.

Larklock builds small, precise Blender add-ons for woodworkers, 3D-print makers and product artists. Every release is tested on the current Blender LTS versions and works fully offline.

hello@larklock.com

Blender add-on · version 1.0.0

Carvable

Ready for release Blender 4.5 LTS – 5.2 LTS GPL-3.0-or-later

Turns an image or height map into an exact bas-relief for CNC carving and 3D printing: sizes in millimetres, draft angles for tapered bits, a check of what your router bit can really carve, a closed STL and a 16-bit height map for your CAM program.

A grayscale rosette height map next to the same rosette carved in an oak board, with a ball-nose router bit — From a 16-bit height map to a carved oak plate. Rendered in Blender (Cycles) from the add-on’s own output.

Exact millimetres. Plate width, height, relief depth, stock thickness and base are entered in mm; the STL has exactly the size you asked for.
Draft angle for tapered bits. No wall is steeper than the angle you set (default 10° from vertical). Material is added at the foot of steep walls; tops are never lowered.
Tool check. Pick a tapered ball nose, ball nose, flat end mill or V-bit and its size. The preview colours every spot the bit cannot reach and reports the uncut thickness. Export as Carved writes the surface the bit will actually leave.
Depth compression with detail kept. Linear by default; a gradient-domain mode (after Weyrich et al., SIGGRAPH 2007) squeezes deep scenes while fine texture survives.
16-bit everywhere. 16-bit PNG and TIFF and 32-bit EXR are read without colour management, so every level of a height map is kept. 8-bit stepping is smoothed away.
Outputs for CAM. A closed (watertight) STL in millimetres and a 16-bit PNG height map with a dimensions file for Vectric, Carveco, PixelCNC and others.

Defaults and measurements
Plate	200 mm, 5 mm relief in 18 mm stock
Frame	10 mm, flush with the top
Draft angle	10° from vertical
Default bit	tapered ball nose, 0.79 mm (1/32″) tip, 5.4° per side
Live preview	≈ 0.5 s per change (1200 × 1200 px image)
Export, 200 mm at 10 px/mm	≈ 1 s, 0.2 GB memory
Export, 600 mm at 10 px/mm	≈ 7 s, 1.7 GB memory
Automated tests	84, on Blender 4.5.14 LTS and 5.2.2 LTS
Network	none: no license server, no telemetry

Tool check colours on a carved relief: orange to red where a 1/4 inch ball nose cannot reach — Tool check: orange to red marks material a 1/4″ ball nose cannot reach.

The same deep medallion pressed into 5 mm with Linear and with Detail Preserving compression — A deep scene in the same 5 mm: Linear compared with Detail Preserving.

A 16-bit height map card next to the closed STL plate — Two outputs: a 16-bit height map with a dimensions file, and a closed STL in millimetres.

The Carvable panel in Blender's sidebar next to a relief preview — The Carvable tab in Blender’s sidebar, with the relief built at real size in the scene.

Blender add-on · in development

Product Camera (working title)

In development 9:16 · 4:5 · 3:4 · 1:1 · 16:9

Camera moves for product videos that frame the product by themselves. You choose a shot from a library of 14 (orbit, push-in, crane, detail pass, dolly zoom and more); the add-on computes the camera for every frame so the product sits inside the safe zone of each format, clear of the Reels and TikTok interface, whether it is a 2 cm ring or a 4.5 m car. A quality check lists any frame where something hides the product or the camera enters an object.

Hero orbit around a perfume bottle, 9:16 frame

Push-in reveal towards the bottle, 9:16 frame

How our add-ons are made

The code is written with an AI coding assistant (Claude by Anthropic), working to specifications written and approved by Larklock. Larklock chooses what to build and for whom, sets the goals and limits, reviews the results and makes the product decisions: scope, price, name and which camera shots go into the library. Every feature is covered by automated tests on Blender 4.5 and 5.2. The add-ons themselves contain no AI and work offline.