Difference between revisions of "Boxford CNC Induction"

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     1. Jonathan Perkins
 
     1. Jonathan Perkins
     2. Giacomo Shimmings
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     2.  
 
     3. Jan Szumiec
 
     3. Jan Szumiec
 
     4. Maheemal Kapugama Bathgamage
 
     4. Maheemal Kapugama Bathgamage
  
 
==Previous Sessions==
 
==Previous Sessions==

Revision as of 16:51, 28 February 2016


This page is used to track training sessions for the Equipment/CNC_Mill.

Training is available to London Hackspace members. You can pre-book your place below. If you have not yet joined London Hackspace, please do so before joining training!

Space is limited and you must reserve a place on this wiki page when a session is available - watch the Mailing List for announcements. Reserving a place is on a first-come-first-served basis, so you'll need to be quick.

If you can't attend your training session please remove your name from the roster.

Preparing for the session

Using a CNC requires a bit more background knowledge or learning than a laser cutter or 3d printer. You should come to the session having some knowledge of CAD and CAM concepts and have used a CAD/CAM package such as Autodesk Fusion (free, works on Windows or OSX) or other package capable of generating g-code for CNC machining. We will be happy to help with explaining concepts but depending on your previous experience there is quite a lot to learn so you will get the most out of the session and the machine if you do some independent reading / practice.

In particular before coming you should learn a bit about;

  • The difference between CAD geometry files (i.e. DXF, IGES and STEP), and tool path files (i.e. G-Code)
  • Cutting materials - cutter speeds and feed rates - dependent on what you want to cut. Some things (i.e. wax, modeling board) are very forgiving, while others (particularly metals) need to be just right for good results.
  • Any CAM package, Fusion 360 is a good one if you are not sure. You should try generating a tool path with a particular cutter, checking the toolpath visually and by simulation if your CAM software allows it, and finally posting the G-Code to the a g-code file (i.e. .gcode extension).
  • XYZ coordinate systems (on the Boxford CNC, x is left to right (+x is travelling right), y is towards / away from you (+y is travelling away from you), and z is down / up (+z is travelling up)
  • Concept of finding datum of the workpiece, for instance touching off the tool in x, y and z (z is very important)
  • Checking a CAM toolpath by simulating the cut, and also checking the extents of the tool path to make sure it is not going to run into any fixtures or the bed of the machine.

There is machinable wax available so you can experiment a bit after the training (highly recommended!), while there are people around to help you.

Next Sessions

Please use the exact name you used to join LHS, so we can check your membership.

Training is £5 and is payable at the start of the session. (this goes towards upkeep of the machine)

28/02/16 @ 18:30 - 4 places available (space constraints);

   1. Jonathan Perkins
   2. 
   3. Jan Szumiec
   4. Maheemal Kapugama Bathgamage

Previous Sessions