5-Axis machining center : https://www.youtube.com/watch?v=CqePrbeAQoM
Cutting acrylic : https://www.youtube.com/watch?v=Xl0qcV2NAG0
History of CNC : https://www.youtube.com/watch?v=RJuIp6MP98I
numerical control & computer numerical control : https://www.youtube.com/watch?v=oXrG8ivSUqg
CNC operator : https://www.youtube.com/watch?v=uEpjjeDMsPE
CNC programmer : https://www.youtube.com/watch?v=_qVhybsVSo4
유니맷 미니공작기계전시 : https://www.youtube.com/watch?v=MgHuatj07_E
Electrical Discharge Machining : https://www.youtube.com/watch?v=L1D5DLWWMp8
Trumpf laser cutting : https://www.youtube.com/watch?v=o4hZJJEnrD4
Laser metal deposition manufacturing : https://www.youtube.com/watch?v=yKnlmfuMSgo
CNC milling : https://www.youtube.com/watch?v=9rIwyGOPb0o
DC motor : https://www.youtube.com/watch?v=LAtPHANEfQo
Synchronous motor : https://www.youtube.com/watch?v=Vk2jDXxZIhs
Induction motor : https://www.youtube.com/watch?v=LtJoJBUSe28
Stick slip : https://www.youtube.com/watch?v=TcebgBomjRs
5-axis machining : https://www.youtube.com/watch?v=xZOiNdkJ8SU
Profiling : https://www.youtube.com/watch?v=GUFXasNF59c
Grooving : https://www.youtube.com/watch?v=TE8Pg68YkJM
Form tools : http://www.mmsonline.com/articles/form-tools-on-cnc-lathes
채터(chatter) : https://youtu.be/2KceXIKPWEo
Horizontal boring mill : https://www.youtube.com/watch?v=4bACI2julw4
DATRON Micro Drilling CNC Machine : https://www.youtube.com/watch?v=UZLiF4VOTMY
Offshore deepwater drilling process : https://www.youtube.com/watch?v=c0bHP3yYVuk
Introduction to reaming : https://www.youtube.com/watch?v=DuewffX4eDo
High speed tapping machine : https://www.youtube.com/watch?v=3VkqSJJHvEA
Easy tapping method : https://www.youtube.com/watch?v=_XLGCt5UQGM
Plain milling : https://www.youtube.com/watch?v=mCp9ZyeYrWg
Face milling : https://www.youtube.com/watch?v=9OsNUi_o6C4
End milling : https://www.youtube.com/watch?v=HfIaISnqHOk
Broaching operation : https://www.youtube.com/watch?v=uli0ByD0SQA&feature=youtu.be
Hacksaw : https://www.youtube.com/watch?v=FGZV23EVLk4&list=PLqq1obWf0nElvtWSRtv1XlomY54xLSwf7
Band saw : https://www.youtube.com/watch?v=YXW55S4X9zo
File basics : https://www.youtube.com/watch?v=lOR2UwZRBws&feature=youtu.be
Circular saw : https://www.youtube.com/watch?v=-kUHtv5e7cI&feature=youtu.be
Limeuse achard : https://www.youtube.com/watch?v=4PwujznH_OQ&feature=youtu.be
Surface finish : https://en.wikipedia.org/wiki/Surface_finish
flow stress : https://www.princeton.edu/~maelabs/mae324/glos324/flowstress.htm
How Tungsten Carbide Inserts are made : https://www.youtube.com/watch?v=yp4z21-Fnlk
CNC lathe programming
CNC lathe : https://www.youtube.com/watch?v=TtX_AOqhL1g
두산 인프라코어 온라인강의: http://www.doosanmachinetools.com/kr/customer/cnc/onlineedu.do
Basic CNC programming: https://www.youtube.com/watch?v=ZgWYoFWTKJc
CNC simulator : http://cncsimulator.info/
CNC Cookbook : http://www.cnccookbook.com/index.htm