There are so many kinds of Drills. Essentially
they differ only by external parameters (length and diameter) and the material
for which they are made and sharpened. Accordingly, for a start you need
to select the dimensions - it is enough to see the diameter and length of the
screws, anchors, etc., that you are going to attach to the hole ready. Next
you need to choose the appropriate drill for each activity.
For drilling holes in soft materials such
as drywall, wood is very soft, soft for insulating panels, etc., suitable flat
feather drill. They are easy to manufacture and thus very cheap.
For drilling in wood and particle board,
there are special drills on a tree. They look like ordinary spiral drills
with conventional symmetrical obliquely sharpened heads. When used
properly, drills on a tree are long, because the work is a soft material.
For working with metals is also a special
kind of drills. They have a spiral shape, but in contrast to drills for
wood, their head is made of high-strength tempered steel.
For drilling in brick special drills are
used. Usually they spiral shape, dark gray color, with a reinforced head. It
is a tool of the narrow purpose, copes with its function, but unable to
accomplish anything else.
BTW, you can buy the electric dremel tool at Banggood. Besides, you can easily get other maintenance
and repair tools (e.g. credit card lock picking set) there with high quality and reasonable prices.
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