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12pcs 4040 3-way Corner Cube for 4040 T-slot V-slot aluminum extrusion

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$43 USD
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12pcs 4040 3-Way Corner Cube 4040 Extrusion Hardware T-Slot V-Slot Accessories with Screws and Nuts for 4040 Aluminum Extrusion Connector 3D Printer Accessories Silver

12-piece 4040 3-way corner cube with nuts, screws, and wrench for aluminum extrusion. Suitable for 4040 rails and some 4080, compatible with 1/4" acrylic inside rails in some setups. Build quality cited by customers

Highlights

  • 12-piece corner cube kit
  • includes mounting hardware
  • works with 4040 and some 4080 extrusions

Pros

  • includes nuts, screws, and wrench
  • compatible with 4040 and some 4080 extrusions
  • positive build quality and fit feedback

Cons

  • screws may be too long for some setups
  • some reports of missing pieces or hardware quality concerns
  • incorrect Allen key size reported by customers

Best For

  • assembling 4040 aluminum extrusion frameworks
  • creating 3-way corners for T-slot or V-slot systems
  • reinforcing frame joints for 40mm extrusions
  • integrating with 1/4" acrylic inserts in rails
  • alternative corner brackets for 4040 projects
  • hardware kits for extrusion assemblies

Features

  • Includes 12 pieces of 4040 3-way corner cubes in silver
  • Contains 36 nuts and screws for assembly
  • Wrench included for installation
  • Compatible with 4040 extrusion; may fit some 4080 sizes when checked
  • Suitable for 3D printer frames, shelf brackets, and CNC/project parts

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