What it is about
What it can do

Progress & updates

 

Published plans and parts

Assembly instructions and software links

On-line suppliers in Europe we like & use



Repairable machines is a timelab project, located in Ghent, Belgium

 

 

 

BIGBLACKONE - DESIGN & FEATURES

 

00- FEATURES

Big black 01 is a 3 axial mil, intended for milling wood panels.
It uses a KRESS 1050 milling motor. Maximum shaft diameter for milling bits is 8mm

Work size is 1050x790x90 mm

The machine weight approx. 350kg
Outer dimensions are 1800x1500x700mm. It will fit through a door. Sideways. Been there, done that..
All moving parts are containted within the outer dimensions of the frame.
You can put a sheet of plywood on top and use it as a table while it is milling. You can throw a cover over it and contain the dust.

The machine can fit a standard size sheet (2440x1220) by sliding it through from front to back.

The machine runs on Reprap electronics and is controlled with a modified version of Pronterface.

 

 

TOOLS

Some of the design decisions need to be seen in the light of the tools available to us.

At the time we started working on this machine, we had access to:
-a decent drill press
-a 30W lasercutter
-Makerbot 3D-printers

At the time we did not own a lathe or accurate metalworking tools.

If we would start over today, we would have the ends of the screws finished to a smaller diameter on a lathe, and have some critical metal parts cut on a waterjet.

 

OPEN-SOURCE

From the start we meant to document this build and open-source the machine design. And so we did here.
However, along the way we learned more about open-source hardware, what works and what doesn't.

One of the reasons this machine remained unfinished for so long is that we started implementing some of these ideas into the miniCNC, were very excited seeing those evolve, but couldn't tranfer the ideas back to this machine.

just publishing your plans does not make a good piece of open-source hardware, you need to ensure reproducability in your design decisions and the choice of the tools used.
2D-cad files combined with a lasercutter are a great way to do this and the miniCNC is 80% lasercut pieces. Putting it together is one or two weekends of work.

This big machine is 80% hand-built, if you would try to reproduce it, it would take you probably something like 2 months with 2 people.

While we publish this documentation in the hope that it is useful and that you can learn from our process and mistakes, we also publish 'as is'.
This is not a kit or a build manual for reproducing the machine.

 

FILES

CAD-files (2D) of the machine:

downloads/BB1/01-repairable-BB1-cnc13.dwg

STL-files of the printed/milled parts:

downloads/BB1/BB1-stl-files.rar

 

 

 

02- DESIGN

The frame is a 'log cabin' structure. It makes the machine relatively heavy and large, but has several advantages:

-all moving parts are contained within the outer envelope, protecting them when moving the machine. The frame is also rugged enough to put it on its side and fit it through a door that way.

-by using oversized square tubing or the frame, we could get the frame to align itself with simple tools.

-though the machine is large, it takes up relatively little space, as we can put a sheet of plywood on the top and use it as a table when the machine is not operating.

 

Front and back side of the floor are open. Though the maximum work surface is smaller than a full-size sheet of plywood (it is 1050x790mm) you can feed a full-size sheet through front-to-back.

 

 

 

 

     
 

 

  Fitting a standard size plywood sheet (2440x1220mm)
 

 

 

 

  Machine ready to fit through door.
 

 

 

 

Top view, showing the cable guides behind the portal bridge.
Also, photographer demonstrating ruggedness of frame.

 

 

 

 

 

 

none    
 

Detail of self-aligning structure. Tightening the bolts forces the tubular frame into 90° angles.

 

 

 

     
   
 

 

     
   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

 
 
 

 


 

MARCH 27th 2013 -TIMELAB - GHENT - On Wednesday March 27th we will be presenting our big black machine. It is a 800x1000mm 3-axial milling machine intended for milling wood panels in the Ghent fablab. See http://www.timelab.org/nl/presentatie-zelfgebouwde-freesmachine

Everybody is welcome for a quiet drink and some loud milling, from 19h at timelab.

 

MARCH 25th 2013 - Way too long since we came back to our milling machines. Both me and Kurt have been busy running our respective labs and haven't been able to put as much time in our machines as we would want.

MARCH 20th 2013 - SHOP UPDATE - For now we are not distributing any kits of the miniCNC. The machine electronics are based around the old Makerbot Cupcake boards, which are no longer available. We are reworking the electronics to run off a set of Reprap electronics and a modified version of Pronterface.

JANUARI 30th 2012 - Lieven will be giving a workshop/presentation of the miniCNC at the Antwerp Hackerspace.on Friday the 10th of Februari, 8PM.
See http://voidwarranties.be/index.php/Mini-cnc_workshopfor details.


SEPTEMBER 27th 2011- Adam W.-Swicizinsky und Ewald Neuhofer from AWS design team are taking the machine to the Vienna design week to engrave furniture, from September 30th to October 3rd, themed "Copyright - Design zwischen Inspiration und Kopie"
You can follow them on their project blog: http://awsdesignteam.wordpress.com

Copyright, Copyleft - aws designteam - Fr 30.09.2011 – Mo 3.10.2011 - stilwerk
viennadesignweek.com - Labor
www.awsdesign.cc