HolemakingChapter 4.5

http://its.foxvalleytech.com/MachShop1/drillpress/drilltypes.htm

Gang Multi-spindle

www.efunda.com/processes/ machining/drill_cnc.cfm

http://www.cjtkoolcarb.com/catalog/Koolcarb/koolcarbindex2.htm

Design for Manufacturability Handbook - Bralla

Boring Bar and Boring aHole with a lathe.

http://www.nmri.go.jp/eng/khirata/metalwork/lathe/drill/index_e.html

Carbide Tipped Reamer

http://www.cjtkoolcarb.com/catalog/Koolcarb/style452a/style452a.htm