completely forgoing linear rails in favor of strings. The closest thing to a linear guide found on the Marionette is a pane of glass against which the top surface of the print head slides.

But these days, printers are shipping with either V-slot extrusions with Delrin wheels or linear rails. Which is best? Everyone seems to have an opinion, but [Spencer] decided to compare them ...

Stainless steel construction is standard, making the new guides desirable in wet environments and applications where rust prevention oil cannot be used, such as in a cleanroom environment. -Light ...