Drilling with a Drill Press Flashcards
What determines how precise a hole must be drilled?”
Its task and location
When extreme precision isn’t required, what kind of drill can often be used>
A handheld electric or battery-powered drill that is more portable
What is the best drill to use for precision parts that must be perfectly straight and the proper size?
A drill press
Most drill presses must be set to a specific rotational speed in what units?
Revolutions per minute (RPMs)
If surface feet per minute(sfm) or meters per minute (mpm) are given on a chart but the drill press is measured in RPMs, what can be done?
Math
If a twist-point drill point has a 185 degree point, that is almost flat at the tip, what is it used for?
Tough and hard materials such as highly alloyed steels
A 90 degree point is used for what types of materials when drilling?
Soft and highly ductile materials such as plastics
What is the twisty part of a twist drill bit called?
flute length
It is best to follow speed charts for different metals offered by the bit manufacturer or the drill press manufacturer?
The bit manufacturer
Do smaller or larger bit sizes require faster speed settings?
Smaller bit sizes
Are softer or harder materials drilled at faster speed settings?
Softer materials
True or false: It is nearly impossible to reproduce the precision and finish of a factory-sharpened drill bit when hand sharpening it
True
Is it better to drill deep holes with a drill press or handheld press?
Drill press
When operating a drill press, what should be done just before the bit breaks through the opposite surface?
Lighten the feed pressure
Should you wear gloves while using a drill press?
No
