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Hi first,I'm a maker from China.

This project is a 3D Printed Mini CNC. All parts are printable. You can build your own at a low cost. All parts were printed on a traditional FDM 3d printer. It would takes about 40 hours gets all parts printed.

Besides the printeds parts. You only need 3 step motors to move 3 axis, a small brushed motor ,some cutting knife.An arduino UNO and 4 Easydrivers as the controller.

Thogh it's small, it can still work well with forms and soft plastics.

Step 1: Hardware Design

The CNC frame was designed with 3dsmax.

The frame include a the gantry structure and a X axis.the the gantry structure include the Y axis and Z axis .We use three high speed step motor(0.9º) to drive X,Y,Z axis.To make the CNC as small as possible,A 80 mm M3 screw were used as the silding screw. A brused motor was designed work with the carving knife.

Aafter days of printing (with an ultimaker2),we finally get all parts of the frame.

Step 2: Electronic Control

The cnc uses an Arduino nano as the controller. 4 easy drivers were used in order to drive the step motors.And a L293D moudle to drive the brushed motor.

Using the GRBL firmware to control the movement of the cnc.

(https://github.com/grbl/grbl)

Step 3: Test Carving

Using ARTCAM to generate the G code and control the CNC.

This machine can get a good result on cutting forms and soft plastic.

There're two examples which craved a "test" and a rabbit on an ABS plastic.

Thanks for watching and feel free to leave your comment :)

Plz share the files
<p>plesae share file.thanks you!</p>
<p>Can you please share the STLs and electronics info..Thank you</p>
<p>Hi,<br>I am building a CNC Router like this at the moment. Can you tell me which specifications your spindle motor has, or do you have some recommendations which type of motor I should prefer for jobs like milling my own PCBs? </p>
Hi!<br>I use a FF-180PH brused motor form Mabuchi Motor as the spindle in this project. <br><br>https://item.taobao.com/item.htm?spm=a230r.1.14.72.vwaM0o&amp;id=529476262126&amp;ns=1&amp;abbucket=6#detail<br><br>But it only works well with soft materials. And it's not able to mill hard things like PCB. If you want to mill PCBs rather than cutting then .The RS-555/RS-775 from Mabuchi Motor might be a good,cheap choice. <br><br>https://item.taobao.com/item.htm?spm=a230r.1.14.15.ZSmgjx&amp;id=524705288202&amp;ns=1&amp;abbucket=6#detail<br><br>If you want a better spindle, a brushless motor with a retarder transmissioned by a belt would works better.(also more expensive)<br><br>https://item.taobao.com/item.htm?spm=a230r.1.14.16.Jmx4xi&amp;id=40764578955&amp;ns=1&amp;abbucket=6#detail<br><br>https://item.taobao.com/item.htm?spm=a230r.1.14.8.Fszebi&amp;id=42850748049&amp;ns=1&amp;abbucket=6#detail
<p>Thank you a lot for your answer! I will definitely look around for a motor like the RS-555 or the RS-775!</p>
<p>looks gr8</p>
<p>Really cool</p><p>Share the files please</p>

About This Instructable

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Bio: Hi I'm a maker,also a high school student from china. Contact at psrobotics@foxmail.com
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