Observed arrival · 2026-08-27
MackBricks — Custom LEGO Train Wheels
A browser-based wheel builder for designing and ordering custom LEGO-compatible and steam-locomotive wheels in resin.
Field notes
The builder covers 17 half-step sizes for both metal-axle and LEGO-axle wheels, with driving wheels extending through size #13. Users can choose pack sizes from two to 24 pairs and receive a compact MB-XXXX-XXXXX identifier that reconstructs the selected geometry. Pricing is tied to the generated part’s printed volume and plate capacity rather than a separate CAD fee. Other offerings—connecting rods, UV printing, and custom track—are routed through a hand-quoted commission form.
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One card from the complete issue