Corner cubeprism

Easy follow along assembly video - top notch awesome community support - open source files and documentation and examples.

Retroreflectorcorner cube

Cube Corner Connectors enable for some custom Builds by creating among other thing a 3 way connection between Linear Rails or other Parts.  It  can also be used to attach to the side of V-Slot Linear Rail to create a linear carriage.  The holes in the Cube Corner Connector are large enough to accommodate an Eccentric Spacer. This gives you the ability to create an adjustable Gantry cart that will lock onto like size V-Slot Linear Rail.

Lots of knock-offs floating around out there. Get the real deal if you want your machine components to end us square. These are an order of magnitude better machined than the no-name brand. It may look the same in the pictures but these are actually what you want.

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