Over the past several months I’ve been working with the Monoprice Select Mini V2 it is a solid printer right out of the box especially for the price. Despite all of the amazing things about this printer, it does come with a couple of small flaws, many of which can be fixed for pennies with a simple print and some cheap hardware. Today I’m looking at the E3Dv6 carriage upgrade by US Water Rockets. As a bonus I’ve included a short guide on how to effectively wire the LED and part cooling fan that is meant to be attached to this modification.
I’d had my eye on this upgrade soon after picking up this printer. I’d noticed that the stock carriage for the E3Dv6 style extruder that comes with the printer causes the gantry to tilt ever so slightly forwards as the center of gravity is quite far away from the linear rails. Additionally, printing calibration cubes demonstrated that the printer had a fair amount of play in the x axis. Initially in order to fix this I had printed some belt tensioners also designed by US Water Rockets. However, this carriage design improves the belt tensioning system dramatically by integrating it directly into the carriage.
This upgrade was also an opportunity to upgrade the stock plastic GT2 pulleys with full metal ones (Shout out to spool3d.ca). The part cooling fan is the only part of this print where I could see there being room for improvement, the rest of this upgrade is rock solid and really made a measurable improvement in the printer’s accuracy.