40 to 50 mm Round Base Adapter

This 3D-printed adapter lets you fit a 40 mm round base into a 50 mm one, matching updated rules for Warhammer 40k and Age of Sigmar. No cutting, sanding, or re-basing required—just attach it with a small amount of blu tack or glue.

It’s ideal for updating models like Space Marine Centurions, Necron Technomancers, Lord of Contagion, or AoS units like the Spirit of Durthu and Swampcalla Sloggoth. The underside of the base remains accessible, allowing magnetization if needed.

With this adapter, you keep your paintwork intact while ensuring game-legal dimensions and better tabletop stability.

✔️ Key benefits:

• Expands 40mm bases to 50mm standard
• No damage to base or model
• Legal for AoS and WH40k play
• Magnetization-compatible
• Durable PLA with exact fit