Note: my LEGO® bricks pages start here!

Since there is no unique official definition of what to do to be called "LEGO® purist", I try here to give some guidelines.

Classes:

1. "excellence": strictly follows purism rules below
2. "pure": follows rules below but also "discouraged" stuff
3. "exception": like "pure" but with a very few extra exceptions allowed (see below).

Rules:

1. you shall use only original LEGO® products
2. you shall not modify bricks and parts (no cutting, no drilling, no gluing, no painting, no molding, no decaling...)
3. rechargeable batteries (to be used in standard LEGO® battery boxes) are allowed; common batteries are discouraged.

Quality indicators:

1. realism
2. originality
3. detail level
4. minifig scale
5. functionality (example: what appears as "gears coupling" must not be aesthetics only)
6. coloring.

Building quality indicators:

• minimum (or not any) visible studs
• variety of bricks deployed (colors and shapes)
• not hard at unmounting
• presence of full building instructions or CAD design
• information sheet (hours spent, techniques, parts inventory, photos of building moments, etc)

You shall use only original LEGO products

• only original LEGO parts: no "clones", no hand-made parts or accessories
• no scratched or otherwise visibly damaged bricks (scratched or damaged bricks can only be used in the always invisible interiors)
• every brick or gadget contained in any LEGO set is fine: if you need "special" pieces, figures, accessories, then go for Bionicle, Clikits, Duplo, Galidor, magnet, etc sets; every official LEGO® product is fine, including keyrings, shirts, backpacks, set manuals, etc (anyways, use of these is discouraged)
• stickers found in standard LEGO sets are allowed (even on different bricks than intended in their original sets) but discouraged; in any case, they cannot be custom-cut or partially covered.

• allowed: baseplates extracted from Ludo and Tic Tac Toe LEGO sets (anyways, their glued pieces must not be unglued)
• allowed: strings (custom cutting is discouraged), motors, flexible parts (tubing, etc), the USB webcam coming from a LEGO set...
• allowed: magnet minifigs combined with other LEGO magnet parts
• not allowed: manuals coming from sets
• not allowed: parts of the boxes (including those containing strings)
• not allowed: electric adapters which do not come from any official LEGO set.

Exceptions

While these exceptions are generally not allowed, they may be considered for complex projects:

• high capacity power systems (electric adapters, battery sets and cables, and so on), provided that they are not too visible;
• printed labels instead of stickers (to have more realism and to avoid gluing stickers on bricks);
• LEDs and other illumination systems (provided that they and their cables are not visible).

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