Parametric Mount for Berd Air MAX

thingiverse

Here's a simple OpenSCAD-based mount for the large motor used in the Berd-Air MAX system. Unlike the mount published by MakerHive, which seems optimized for aluminum extrusion-based frames, this mount is designed specifically for Prusa i3-style or boxy CoreXY printers with frames built from flat materials. The motor is secured in place using a strip of double-sided velcro (a few zip-ties are too puny to handle this massive motor), threaded through the channel in the mount. The mount itself is attached to the frame with friction and a screw, where I drilled a hole into the frame using the mount as a guide. The default settings are for a 1/4" frame, Velcro-brand velcro, and an M3 screw, but everything can be adjusted according to whatever materials you have on hand. If you have a printer that is tough to drill into (or you don't want to void warranties), simply decrease your measured board thickness by about 0.5 mm to get a tight friction fit instead. A note about the motor: if MakerHive is out of stock, look for identical motors on Banggood ([link](https://www.banggood.com/12V-DC-Diaphragm-Vacuum-Pump-Air-pump-High-Pressure-Micro-Vacuum-Pump-p-1046082.html)). Be cautious when attaching the motor directly to your fan output, as this device draws an incredible amount of current and most controller boards can't handle that much power from their fan outputs. A typical fan draws no more than 500 mA, while this beast draws almost 1.5 A! If you want to use it on a normal 12V setup, you'll need an external MOSFET board with an optocoupler, such as the one made by MKS or MakerHive themselves. Also, this device is loud, so I recommend sticking a piece of thin rubber or foam between the motor and the mount to dampen the noise a bit.