7mm Door Knob Spindle for 3D-Printed Knobs – 3mm Bolt Mount

Bring old-school reliability back to your door hardware.

Inspired by the simple spindle designs found in early-1900s homes, this 7mm door knob spindle is designed to securely connect with my compatible 3D-printed door knobs using 3mm bolts. The through-hole mounting system creates a positive mechanical connection without relying on small threaded sections in the spindle itself.

Features

• Vintage-inspired spindle design
• 7mm square profile
• Multiple mounting positions for different door and knob spacing
• Uses 3mm through-bolts to securely fasten compatible knobs
• Designed for strength and repeated everyday use
• Pairs with my compatible 3D-printed door knob designs

What You Get

• 1 door knob spindle

Material

• PA-CF (carbon-fiber reinforced nylon)

Compatibility

• Designed for use with my 3D-printed door knobs that use 3mm mounting hardware
• 7mm square spindle profile

Please Note
Compatibility with existing antique, vintage, or modern door knobs is not guaranteed. This spindle is designed around my own 3D-printed door knob system. Please check dimensions before ordering for any other application.

Door knobs sold separately