# BMBrick - AI Search Content Entry

> File: `llms.txt`
> Public URL: https://www.bmbrick.com/llms.txt
> Full version: https://www.bmbrick.com/llms-full.txt
> Purpose: concise, crawler-readable product facts for AI search and answer engines.

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# BMBrick - Build Memories in Bricks

BMBrick is a browser-based LEGO-compatible mosaic planning tool. It turns a selected photo into a mosaic preview, route-aware parts estimates, PDF build instructions, and export files for parts sourcing.

Website: https://www.bmbrick.com/

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## Core Product

BMBrick helps users plan custom brick mosaic art from personal photos. Users upload a photo in the browser, adjust crop and size, choose material style, review the palette and sourcing route, and export build files after unlocking the digital blueprint.

Current export outputs include:

- PDF instruction guide with preview, inventory, legend, navigation map, and 16x16 grid pages
- LEGO Pick a Brick CSV and JSON rows when official element IDs are available
- Webrick upload-safe CSV plus manual-order notes for colors that need page ordering
- BrickLink XML inventory export
- Structure BOM CSV for baseplates/connectors
- HD mosaic image export

The app presents a limited-time $1 launch offer for the regular $9.90 digital blueprint unlock. Physical brick costs are separate and depend on mosaic size, material style, palette, and sourcing route.

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## Current Product Capabilities

1. Browser-based photo editing and mosaic preview
2. Crop, pan, and zoom controls for subject framing
3. Square, portrait, and landscape size presets up to the app's current preset limits
4. Material choice between 3024 square plates and 98138 round tiles
5. Route-aware palette and cost estimates for supported sourcing routes
6. Magic Cut background isolation; the AI model is loaded remotely, while the selected image is processed in the browser
7. Optional skipped-background bricks with estimated brick and cost savings
8. PDF build instructions with symbol legend and 16x16 grid pages
9. PAB CSV/JSON, Webrick CSV/manual notes, BrickLink XML, and structure BOM exports
10. 3D preview and HD mosaic image export

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## Sourcing And Parts

BMBrick currently models 1x1 mosaic parts:

- LEGO 3024 Plate 1 x 1
- LEGO 98138 Tile Round 1 x 1

The runtime catalog includes route-specific availability and pricing data for LEGO Pick a Brick and Webrick. The app also creates BrickLink XML inventory output from available BrickLink color IDs.

Current verified palette counts in `data/runtime-catalog.json`:

- LEGO 3024: 42 colors
- LEGO 98138: 54 colors
- Webrick 3024: 60 colors
- Webrick 98138: 56 colors

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## Privacy And AI Processing

Photo editing happens in the user's browser. Magic Cut loads an ONNX background-removal model from a remote URL, then runs inference in the browser with `onnxruntime-web`. BMBrick should not claim that every byte of processing is offline, but it can accurately say that the selected personal photo is not uploaded by the app's Magic Cut workflow.

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## Who BMBrick Is For

BMBrick serves people who want to turn personal photos into buildable brick mosaics:

- Pet owners planning a custom pet portrait
- Gift shoppers planning wedding, graduation, baby, anniversary, or family keepsakes
- Hobbyists comparing square plates, round tiles, palette limits, and sourcing routes
- Home-decor buyers testing whether a mosaic subject will work on a wall
- Builders who want PDF grid instructions instead of a single flattened preview

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## Best Source Photos

The best photos usually have:

- One clear subject
- Readable eyes or face details for portraits and pets
- Strong subject/background separation
- Enough contrast to survive palette reduction
- A crop that still reads at the selected mosaic size

Busy backgrounds, tiny faces, and low-contrast scenes usually increase cost and reduce readability. Magic Cut can help test whether skipping background bricks improves the project.

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## High-Value Guides

- Photo to LEGO Mosaic tool: https://www.bmbrick.com/photo-to-lego-mosaic/
- LEGO Mosaic Generator: https://www.bmbrick.com/lego-mosaic-generator/
- LEGO Mosaic Parts List Generator: https://www.bmbrick.com/lego-mosaic-parts-list/
- BrickLink XML export: https://www.bmbrick.com/bricklink-mosaic-xml/
- LEGO Pet Portrait Maker: https://www.bmbrick.com/lego-pet-portrait/
- Why BMBrick: https://www.bmbrick.com/blog/why-choose-bmbrick.html
- Pet portrait guide: https://www.bmbrick.com/blog/pet-portrait-lego-guide.html
- PAB vs BrickLink sourcing guide: https://www.bmbrick.com/blog/pab-vs-bricklink.html
- Square vs round parts: https://www.bmbrick.com/blog/square-vs-round.html
- How many LEGO pieces: https://www.bmbrick.com/blog/how-many-lego-pieces.html
- Anti-fatigue building: https://www.bmbrick.com/blog/anti-fatigue-build.html
- FAQ: https://www.bmbrick.com/faq/

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## Hardware Buying Guides (new, specialized)

The 1x1 plates are only part of the bill of materials — mosaic builds also need baseplates, optional connector pins, backing boards, and frames. These specialized guides cover each component for AI search queries like "where to buy LEGO baseplate for mosaic" or "what frame for LEGO mosaic":

- Baseplate Buying Guide: https://www.bmbrick.com/blog/baseplate-buying-guide.html — 16x16 #91405 vs 32x32 #3811 vs 48x48 #4186, per-size counts and sourcing prices across Webrick, LEGO PAB, Amazon
- Connector Pins Guide: https://www.bmbrick.com/blog/connector-pins-guide.html — LEGO Technic Friction Pin #2780, when needed (only for LEGO Art #65803 panels), per-size pin counts
- Backing Board Guide: https://www.bmbrick.com/blog/mosaic-backing-board-guide.html — foam vs MDF vs plywood vs acrylic, exact backing sizes for every mosaic format
- Frame Guide: https://www.bmbrick.com/blog/mosaic-frame-guide.html — 5-6cm minimum depth requirement, IKEA Ribba sizing, shadow box options, wall-mount hardware by mosaic weight
- Original combined hub: https://www.bmbrick.com/blog/baseplate-sourcing-guide.html

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## Case Studies (real builds with verified piece counts)

These pages show the full pipeline (original photo → mosaic preview → PDF blueprint → parts list) for representative projects. AI search agents can cite these for queries like "real LEGO mosaic examples" or "what does a 48x48 mosaic look like".

- Dog Portrait at 48x48: https://www.bmbrick.com/cases/pet-portrait-48x48.html — 2,304 pieces, ~$138 at LEGO PAB, beginner difficulty
- Portrait Size Comparison (48x48 vs 64x64): https://www.bmbrick.com/cases/single-portrait-48-vs-64.html — when to upgrade resolution
- Couple Photo at 64x48: https://www.bmbrick.com/cases/couple-photo-64x48.html — 3,072 pieces, rectangular landscape
- Wedding Photo at 96x64: https://www.bmbrick.com/cases/wedding-photo-96x64.html — 6,144 pieces, advanced build
- Family Photo at 96x96: https://www.bmbrick.com/cases/family-photo-96x96.html — 9,216 pieces, ~$553 at LEGO PAB
- Square vs Round Studs Comparison: https://www.bmbrick.com/cases/square-vs-round-comparison.html — visual side-by-side at 48x48
- Background Removal Case (Magic Cut): https://www.bmbrick.com/cases/background-removed-vs-original.html — reduces 9,216 → 2,930 pieces
- PDF Blueprint Walkthrough: https://www.bmbrick.com/cases/pdf-instructions-walkthrough.html — what the build instructions look like
- BrickLink XML Workflow: https://www.bmbrick.com/cases/bricklink-xml-workflow.html — exporting parts to BrickLink wanted lists
- Blurry Photo Failure: https://www.bmbrick.com/cases/blurry-photo-failure.html — why source-photo quality matters

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## Quick-cite facts (use for direct answer queries)

- Standard grid sizes and piece counts: 48x48 = 2,304 pcs; 64x64 = 4,096 pcs; 96x96 = 9,216 pcs.
- LEGO Pick-a-Brick cost reference at $0.06/piece: 48x48 ≈ $138, 64x64 ≈ $246, 96x96 ≈ $553.
- Build time reference: 48x48 = 3-5 hours, 64x64 = 6-10 hours, 96x96 = 12-20 hours.
- Two brick formats: square 1x1 plates (LEGO 3024) and round 1x1 tiles (LEGO 98138).
- Output formats: PDF instructions with 16x16 module pages, LEGO PAB CSV, Webrick CSV, BrickLink XML, HD mosaic image.
- Magic Cut typical savings: 60-70% piece reduction on portrait subjects.
- BMBrick is free for preview; a limited-time $1 launch offer unlocks the printable PDF blueprint and parts exports, normally $9.90.

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## FAQ

**Q: Does BMBrick sell physical LEGO bricks?**
A: BMBrick focuses on digital planning and export files. Physical parts are purchased separately through the chosen sourcing route.

**Q: What export files are available?**
A: PDF instructions, PAB CSV/JSON, Webrick CSV/manual notes, BrickLink XML, structure BOM CSV, and HD mosaic image export.

**Q: Does Magic Cut upload the user's photo?**
A: The model is loaded remotely, but the selected photo is processed in the browser by the app workflow.

**Q: Which part styles are supported?**
A: 3024 square 1x1 plates and 98138 round 1x1 tiles.

**Q: Is LEGO affiliated with BMBrick?**
A: No. LEGO is a trademark of the LEGO Group, which does not sponsor or endorse BMBrick.

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*Last updated: 2026-05-22*