by Mark Carew and Sonny Lowe
"I would like to start off with mentioning that this awesome design has been the collaborative efforts of both myself as well as OpenBuilds member Sonny Lowe.
Sonny's volunteer work on this build has been a big part of helping to bring this great design to life so props go out to him for all of his help. Thank you Sonny " -Mark Carew
Hello friends. I would like to introduce you to an awesome new OpenBuilds machine we call the MiniMill!
Spoiler Board (Not Included) Dimensions: 5"x5" (127mm x 127mm)
Assembly time : 2-4 hr ~ or in about an afternoon
Video Build of the MiniMill
Jump in and when you complete this easy step by step build-along video you will have an awesome 3 Axis CNC Mini Mill for your Desktop
Please note: Be sure to check out all the cool CAM programs out there to take your machine to the next level!
- We use the free SketchUp Make for our CAD (makes the 3D model parts
- For creating 2D drawings we use the Free and Awesome OpenBuilds CAM(CAM Works up the cut lines and makes the GCODE for the part or art)
- For controlling the machine we use OpenBuilds CONTROL Software(CONTROL Reads the gcode created in cam and moves the machine to make the part or art)Control Boards
There are many different options for controller/driver packages that can by used to control your machine so be sure to explore all the controller options and pick the one that works for your needs.
PLEASE NOTE: If you are using an OpenBuilds BlackBox all in one plug and play controller you can skip these settings and instead follow along with the main BlackBox wiring video.
MiniMill GRBL Settings - This information can also be used to set up other firmware as well
$0=10 (step pulse, usec)
$1=255 (step idle delay, msec)
$2=0 (step port invert mask:00000000)
$3=0 (dir port invert mask:00000000)
$4=1 (step enable invert, bool)(Board V1, V2, V3 Matte = $4=0 - Glossy board V3 = $4=1)
$5=0 (limit pins invert, bool)
$6=0 (probe pin invert, bool)
$10=2 (status report mask:00000010)
$11=0.010 (junction deviation, mm)
$12=0.002 (arc tolerance, mm)
$13=0 (report inches, bool)
$20=0 (soft limits, bool)
$21=0 (hard limits, bool)
$22=0 (homing cycle, bool)
$23=0 (homing dir invert mask:00000000)
$24=25.000 (homing feed, mm/min)
$25=500.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=1.000 (homing pull-off, mm)
$100=199.100 (x, step/mm)
$101=199.100 (y, step/mm)
$102=199.100 (z, step/mm)
$110=1500.000 (x max rate, mm/min)
$111=1500.000 (y max rate, mm/min)
$112=1500.000 (z max rate, mm/min)
$120=50.000 (x accel, mm/sec^2)
$121=50.000 (y accel, mm/sec^2)
$122=50.000 (z accel, mm/sec^2)
$130=120.000 (x max travel, mm)
$131=120.000 (y max travel, mm)
$132=60.000 (z max travel, mm)
*If your looking to use a water cooled spindle be sure to check out the 3D printed reducer ring/spindle mount adapter created by Tyler Harley
Spindle Mount Adapter
Check out these Collet Reducers for the DeWalt 611 and Bosch Colt Routers that will accept 1/8" shaft bits
- OPEN SOURCE - The MiniMill machine is Open Source and the Builder community is encouraged to modify and build on this design.
- EASY TO BUILD - With the V-Slot Modular Framing System and OpenBuilds Build-Along Video, assembly is quick and easy.
- AFFORDABLE - OpenBuilds budget friendly parts allow Builders the opportunity to freely create.
- CUSTOMIZATION - Take it to the next level and make it your own! Share your builds with the Open Source Builders community OpenBuilds.com
Grab your Bundle Pack Today and Start Your Build!
- For your convenience and ease of purchase this Build is available as a Parts Bundle -
"Mini but Mighty. Our test cuts produced accurate results that are a testament to the MiniMill's sturdy C-Beam construction."
Matt Dauray / Make: Magazine 2019 Digital Fabrication Editor's Pick
"The OpenBuilds Mini Mill is just plain cool." - Tool-Rank.com
This OpenBuilds Mini Mill is a great go-to desktop sized CNC milling plate / part maker and 3D carving machine!
- Build License:
- CC - Attribution - CC BY
Reason for this BuildWe wanted to create an open easy to use quick to set up desktop sized go-to machine, and so the OpenBuilds MiniMill was created !
Inspired byC-Beam Machine and Desktop mill designs