Monoprice Maker Select Plus Z extension (348mm)

This is Z height extension for Maker Select Plus (Wanhao Duplicator I3 Plus). These brackets add another 168mm to original 180mm, so the maximum Z height can be up to 348mm.

In addition to these brackets, you need the following items to complete the mod.
- new [lead screws](https://www.ebay.com/itm/8mm-Acme-threaded-Rod-trapezoidal-Lead-Screw-T8-Nut-For-CNC-3D-printer-Reprap/131817911254?hash=item1eb0f5b3d6:rk:1:pf:0&var) and [smooth rods](https://www.ebay.com/itm/8mm-CNC-3D-Printer-Axis-Ch