Computing

ASML High-NA EUV Lego Kit Gets Open 810-Piece Fan Replica

A custom fan-made replica of ASML's rare employee-exclusive High-NA EUV Lego set offers enthusiasts an open-source alternative featuring detailed additions like a sliding wafer tray and vacuum pumps.

Radwan AbdulhadiEditor and technology writer

Published: October 17, 2026 · Updated: October 17, 2026 · 3 min read

ASML High-NA EUV Lego Kit Gets Open 810-Piece Fan Replica — Image: Tom's Hardware

The Allure of the Employee-Exclusive ASML Lego Set

ASML previously launched a [Lego kit version of the TWINSCAN EXE:5000] for its employees, immortalizing the world's first High-NA EUV machine in a small form factor intended for display. Because ASML restricts the purchase of such branded products exclusively to its staff, the company canceled orders placed from non-ASML email addresses. This strict distribution model instantly drove up collector demand.

While the official manufacturer price on the company's internal store is set at $230, current online listings on eBay routinely see the rare sets commanding prices between $500 and $700. For everyday enthusiasts and semiconductor hobbyists lacking an internal connection at ASML, acquiring an authentic retail box remains exceptionally difficult.

ASML TWINSCAN EXE:5000 Lego kit Rebrickable version — (Image credit: NightHawk119911/Rebrickable) · Source: Tom's Hardware

A Custom Rebrickable MOC Solves the Supply Constraint

To counter the prohibitive collector market prices, X user @lithos_graphein highlighted a creative solution shared on Rebrickable. Designed by creator NightHawk11991, the custom My Own Creation (MOC) project serves as a fan-made alternative that modifies the original design to introduce deeper equipment accuracy.

According to the creator, the project was inspired by a friend who fell in love with the employee-exclusive set and provided photographs of actual semiconductor equipment. These reference images guided the implementation of improved accuracy across the entire custom design.

Enhanced Interior Details and Functional Elements

The custom 810-piece MOC builds significantly upon the baseline aesthetic by incorporating various interior components modeled after the real-world manufacturing tool. Builders assembling the project will construct internal features including vacuum pumps, a laser emitter, and optical reflectors.

Beyond stationary aesthetic improvements, the custom model introduces moving mechanics. Most notably, the silicon wafer tray features a functional design that allows it to slide out smoothly, adding an extra layer of interactive realism for builders who complete the multi-part assembly.

Build Specifications and Part Sourcing Challenges

Constructing the custom semiconductor tool replica requires a total of 810 bricks divided across 152 unique parts. While the project is modest in scale compared to massive retail Lego releases, @lithos_graphein noted that completing the entire build takes roughly a week of dedicated construction time.

Enthusiasts wishing to undertake the project can access PDF building instructions for free on the Rebrickable website. However, sourcing all necessary components can present hurdles because certain specific bricks utilized in the design are notoriously difficult to find through standard secondary marketplace channels.

Corporate Merchandise and Semiconductor Collector Culture

Corporate-commissioned merchandise within the semiconductor industry frequently commands high status among collectors. Companies like ASML, TSMC, and SK hynix occasionally produce limited-edition promotional items, games, or model kits distributed primarily to their workforce.

When employees decide to liquidate company swag online, rare items can fetch staggering sums on the secondhand market. Instances include extreme reseller markups where specialized corporate items sell for thousands of dollars, making open-source community MOC projects an attractive path for tech fans.