Mounting the Machine

The overall dimensions of the H-Series with filament cabinet and build enclosure are:

Width: 110cm (~43 5/16 in)

Depth: 85cm (~ 33 1/2 in)

Height: 100cm (~39 3/8 in)

Weight: Up to 70kgs (~154lbs)

Any sturdy work surface will suffice as a benchtop to mount the H-Series machine. You can find the mounting hole dimensions here, and generally use the bolts that the machine were shipped with. If longer bolts are required, the thread is M8x1.25mm. See the attachment for specific mounting hole locations, or to print a template.

One recommended bench is the 60x36 U-Line Packing Table. However, for the build enclosure to fit bottom-down underneath the bench, the lower shelf will require modification (the enclosure will fit on its back underneath in the standard configuration).

For a custom bench, the two files below show the workbench design that we used for the H4 prototype machines. It is a simple design with aluminum extrusion corners, ½” and ¾” black melamine panels, and penetrations for mounting screws and maintenance access. It is a good design if you prefer woodworking tools and aluminum extrusion.  We used this same design, but added a ¼” steel plate to the top for added stiffness. A second design made with welded tubing is also shown below.  This is our preferred design for the H4 machines as it is stiffer and has lower material cost. If you're not a welder, any local welding shop will be able to fabricate this quickly for you.

Note, the depth of both of these designs is the minimum required to allow use of the build enclosure.  If your machine will be placed against a wall, you will want to increase the distance from the back bolt hole toward the back side.

Power and Air

A 120V/15A grounded circuit will sufficiently power the H4, which should never exceed 10A current draw. A GFCI-protected receptacle is not required.

To cool the spindles and remove chips, we recommend using dry, compressed air during milling operations. The air supply should be capable of providing at least 57 lpm (2 cfm) at 4 bar (60 psi). For comfort during operation, we recommend a compressor with an operating noise level below 65 decibels (option, option).