My new 2020 CNC Machine with Arduino GRBL Controller



I bought this Kit CNC Machine on AliExpress: http://www.aliexpress.com/item/PCB-milling-machine-CNC-2020B-DIY-cnc-wood-carving-machine-mini-engraving-machine-3050114A/32428314987.html

A USB-CNC clone and a TB6560 stepper driver board were included, but I’ve used an Arduino based solution instead:
– Arduino with GRBL 0.9i: http://www.ebay.com/itm/NEW-UNO-R3-ATmega328P-CH340-Mini-USB-Board-for-Compatible-Arduino-/311155383820?ssPageName=ADME:L:OC:CH:3160
– CNC Shield: http://www.ebay.com/itm/V3-Engraver-3D-Printer-New-CNC-Shield-Expansion-Board-A4988-Driver-for-Arduino-A-/311136679650?ssPageName=ADME:L:OC:CH:3160
– DRV8825 Stepper Driver: http://www.ebay.com/itm/Arduino-DRV8825-stepper-motor-driver-Module-3D-printer-RAMPS1-4-RepRap-StepStick-/310993151262?ssPageName=ADME:L:OC:CH:3160

I’ve also implemented some enhancements:
– Plywood base plate for more rigidity
– Custom made adjustable M8 “Anti Backlash” nuts on all three axes.
– More powerful “42BYGHW811” 2.5A NEMA 17 motors
– Custom 48V spindle PWM controller, which receives the spindle PWM Signal from the GRBL board via an RC filter. The spindle speed is then controlled from a 2nd Arduino with a PID algorithm and an RPM sensor. There are also two potentiometers, one for RPM override in CNC mode and one for manual RPM adjustment.
The max Spindle RPM is about 9500 RPM @48V.

The next step will be to add a 1602 display to the spindle controller.

This little machine is suitable for:
– Engraving
– Plastic milling
– Wood milling

The weakest point at the moment are the unsupported X axis rods, which are only 12mm thick. I will replace them with SBR12 supported rods to improve the X axis rigidity.

Machine assembly manual: https://www.dropbox.com/s/9j2nau54jy02oxw/2020B%20cnc%20machine%20manual.pdf?dl=0

source

Co-founder of Makerbot, Bre Pettis purchases milling machine firm Other Machine

Former CEO and co-founder of 3D printing firm Makerbot, Bre Pettis has purchased a non 3D printing relevant firm – the CNC milling system enterprise Other Machine.

Californian enterprise, Other Machine operates from Berkeley and is the inventor of the Othermill Pro desktop milling system. Bre Pettis currently acts as CEO and founding father of Bre & Co, established in 2016, the enterprise creates tailor-made 3D printed presents and heirlooms.

Othermill Pro

Other Machine unveiled its Othermill product line on Kickstarter with the original machine raising in excess of $311,000 back in 2013. The newest system, the Othermill Pro, at the moment is sold for $3,199.

Making use of its 3-axis toolhead, the machine has the ability to mill Printed Wiring Boards and carve 3D shapes. The primary selling point of the equipment is its capability to be incorporated in an office setup. The Othermill Pro is sufficiently small enough to fit on a desktop, noiseless enough to feature in a communal working place and can accelerate production processes by creating in-house rather than outsourcing.

Besides hardware systems, the Berkeley firm furthermore has developed its very own Otherplan software for the CNC machines. Bre Pettis declares he is “thrilled” to buy Other Machine as,

The Othermill Pro is definitely an amazing milling machine that’s so accurate that electrical engineers can easily mill Printed Wiring Boards with 6 mil traces and build Printed Wiring Boards more rapidly than a Printed Wiring Board service. I’m energized to return in the arena assisting innovators.

Printed Wiring Boards and electronic devices

CEO of Other Machine, Dr. Danielle Applestone makes clear, “I anticipate building on our commitment of accessible prototyping machines for expert engineers and empowering numerous of students using the Othermill Pro to learn and make their thoughts possible.”

Applestone likewise claimed she’ll carry on in her position as CEO and is “excited to have Bre’s support.”

Determined by https://3dprintingindustry.com/news/co-founder-makerbot-bre-pettis-acquires-milling-machine-company-machine-113976/

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