Tutorial – Introduction to CNC manufacturing at KTH

This tutorial serves as an introduction to CNC milling with the MultiCam 3-204-R-PF of the workshop of KTH Architecture School.

Google Drive folder with KTH community resources:
https://drive.google.com/drive/folders/1OHq-LDx0GDts2dJcNA8uVFCQKMYtfefo?fbclid=IwAR3N_OyZdp7177phhnO8VKDx7QvNjllqkcC5LWxdzJXs7DzfRdTC8KqxYUM

Timestamps:
0:00 The tool library is already uploaded to Google Drive
1:23 Booking of the CNC
2:28 The orientation of the CNC machine's axes
3:31 Turning on the machine
4:06 Introduction the the controller and the connected computer
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4:37 Homing the CNC machine (hard home)
5:43 Encountering "Homing aborted" error
6:31 Solving the "Homing aborted" error by rebooting
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8:36 Successfully homing the machine
9:12 Spindle warm-up and tool holder numbering
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12:57 Fusion 360 – Verifying tool numbers for toolpaths
15:52 Fusion 360 – Feedrate and spindle speed
18:03 Fusion 360 – Regenerate a toolpath
19:11 Anatomy of an end mill – flutes and shank
20:24 Fusion 360 – Simulating the toolpath
21:27 Fusion 360 – Post process and export the toolpath
22:08 Uploading the G-code file to your KTH account storage
22:42 Anatomy of an end mill – cutting diameter and chip evacuation lanes
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24:00 Warm-up completed; tool number considerations
26:09 Properly assembling a tool (shank not inserted more than two thirds of collet)
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31:15 Calibration of the tool
37:04 Remember to take off the magnet after calibration
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38:05 Fixating the stock material on the vacuum bed
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46:11 Setting the surface depth
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48:07 Setting the maximum cutting depth
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49:24 Setting soft home (toolpath origin)
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51:56 Checking the checklist on the wall
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52:37 Sending over the G-code file
56:05 Emergency stop and pausing
57:10 Adjusting feed and speed
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1:01:51 Executing the toolpath
1:03:40 The brittle weakness of styrofoam
1:04:06 The impact of cutting diameter on milling time
1:05:20 The importance of supervision
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1:07:59 Post-completion; cleaning up
1:09:40 Shutting down

Note: After shutting down everything and removing the milled stock from the bed, it is very much appreciated to clean up those areas which were obstructed before, so that the machine and the workplace are in the same as or better cleaning condition than it was before.

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