Custom 3D Printed Shopsmith Power Coupler (for 503574)
This precision 3D printed power coupler is a reliable replacement for Shopsmith part 503574, designed to handle normal to heavy loads while still acting as a failsafe under extreme stress to protect your equipment.
Crafted from a durable, high-performance plastic compound, it offers excellent strength for daily use and is engineered to shear safely if overloaded—just like the original design intended.
Each end of the coupler securely mates with the splined metal hubs used on Shopsmith systems, ensuring proper compatibility with the MARK 7, MARK V, MARK 4, Power Station, and Special Purpose Tools like bandsaws, planers, jointers, and more.
⚠️ Note: This part is designed to perform reliably under demanding conditions but will shear by design under extreme overload to prevent damage to your machines.