http://dictionary.reference.com/browse/drill
http://www.design-technology.info/equipment/pillardrill/default.htm
http://www.technologystudent.com/equip1/macdrl1.htm
http://en.wikipedia.org/wiki/Countersink
http://en.wikipedia.org/wiki/Pilot_hole
what is the definition of
1/ portable drill
2/ pillar drill
3/countersink
4/pilot hole
thanks for your help
3 answers
thankyou for helping finding the sites about the different drills it was big help
You're welcome.