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Lapinoo LEGO-compatible Bricks Generator

Draw a brick outline on a stud grid and get a LEGO-compatible STL

Lapinoo LEGO-compatible Bricks Generator is a free browser tool for custom-shaped bricks and plates for LEGO builds. Free to use with no account; the page shows Google ads and no paid plan was seen. Exports STL. Last checked 26 September 2026.

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Opens bricks.lapinoo.net

About this generator

Lapinoo LEGO-compatible Bricks Generator is a free browser tool by Bertrand Gros that turns a shape you draw on a stud grid into a printable brick that fits LEGO parts. Instead of picking from fixed sizes, you paint cells on a 32 by 32 grid, so an L shape, a letter, a ring or another odd outline becomes one piece. Each cell can carry a stud or stay smooth on top, which lets you mix studded and flat areas in the same part.

Before generating, you set four fit adjustments for the studs, the bottom cavity, the body size and the height, each with five steps looser or tighter around nominal. The help text suggests printing a small test brick at nominal first and tuning from there. Full-height bricks can also get one of two reinforcement styles for the long tubes underneath. Three buttons then build a brick, a thin brick or a base plate as an STL on the server.

Every design gets a 6-letter tag you can reload later or share with someone else. The tool has been online since 2017, is free with ads and needs no account. It suits brick fans who want shapes no set includes and printer owners who want to dial in clutch.

What you can make

Custom-shaped bricks
Thin bricks
Custom base plates
Parts mixing studded and smooth tops

How to use Lapinoo LEGO-compatible Bricks Generator

Open the site and draw your outline on the grid
Switch between the studded, smooth and erase tools (right-click also erases)
Leave the fit settings at N for a first test print, or adjust them
Choose a reinforcement option for full-height bricks
Click Brick, Thin brick or Base plate, check the preview and download the STL

What you'll need to print it

Filament and parts that suit what you make with Lapinoo LEGO-compatible Bricks Generator.

Multicolor PLA

Matte PLA

6 x 2 mm magnets

Also handy

Print removal and cleanup tools

Bambu Lab Print Finishing Kit Bambu Lab
Bambu Lab Maker's Supply ESD Stainless Steel Tweezers Set Bambu Lab

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Lapinoo LEGO-compatible Bricks Generator pros

Freeform 32 by 32 stud grid, so most flat outlines work
Four separate fit adjustments to tune clutch for your own printer
Free, no sign-up, and designs can be reloaded or shared by a 6-letter tag

Lapinoo LEGO-compatible Bricks Generator cons

Only grid outlines at fixed heights: no slopes, curves or other special parts
Drawing is built around a mouse (drag to paint, right-click to erase), so phones and tablets are awkward
Getting a good fit can take a few test prints