Question 1

I am interested in this machine but I need some more info as to how it connects to the computer and what kind of software is needed?

Accepted Answer

The E3 is a CNC router that uses an Arduino microprocessor to interpret the g-code file. The firmware is called grbl ( is pre installed on the microprocessor and uses a USB port to receive serial port information (G-code) from software on the computer. I recommend UGS Universal G-code Sender Platform software to send the g-code text file to the controller.  GRBL, and UGS use standard g-code text files to operate. Both have good documentation on their web sites showing their capabilities. There is definite a learning curve using computer controlled routers. G-code is a text file that has  X,Y, and Z coordinate information. UGS sends these coordinates to GRBL which interprets this information and moves the machine. Also, just as note. Check out F-engrave and Scorchworks other products. This software creates the g-code files. This software can take pictures and turn them into g-code. Another good choice is NC Corrector which allows you to edit and graphically view the g-code. There are also program called stick font that makes text easy.  Also, check out our quick start guide on our web page at BobsCNC.

Question 2

What bits, or bit sets, on Amazon would you recommend for this?

Accepted Answer

The E3 CNC router DeWalt spindle comes with an 1/8" and 1/4" collects. Straight, vee, and rounded bits will all work. They need to have a 1/4" or 1/8" shaft size. Search Amazon for "1/8" in router bits" or "1/4" router bits" and select the bits for the material you plan to use. Small end mills will also work.

Question 3

How thick of wood can it cut through?

Accepted Answer

The E3 CNC router gantry height from the table is 3.3".  The maximum height from the bottom of the DeWalt collet from the table is 4.5".  Without a tool change you would be able to cut 1.2" into a 3.3" thick stock or cut all he way thru a 2.25" (or less) thick stock. With tool changes you would be able to cut thru a 3.3" thick stock.Calculations for answer.4.5" -3.3" = 1.2" bit available to cut4.5" = 2.25" of bit + 2.25" thick of stock.

Question 4

What would be the smallest size item one could feasible engrave on? Could I engrave a name on a pen?

Accepted Answer

The E3 CNC router could engrave on a pen. The E3 X and Y smallest step size is less than 0.001" or 80 steps per millimeter

Manufacturer	BobsCNC,LLC
Part Number	Evolution3V1
Item Weight	26 pounds
Product Dimensions	25 x 19 x 25 inches
Item model number	E3
Is Discontinued By Manufacturer	No
Voltage	115 Volts
Wattage	600 watts
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

BobsCNC Quantum Mini CNC Router Kit with the Router Included (16" x 16" cutting area and 3.8" Z travel)

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