drilling
Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool, often multi-point. The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge against the work-piece, cutting off chips (swarf) from the hole as it is drilled.
In rock drilling, the hole is usually not made through a circular cutting motion, though the bit is usually rotated. Instead, the hole is usually made by hammering a drill bit into the hole with quickly repeated short movements. The hammering action can be performed from outside the hole (top-hammer drill) or within the hole (down-the-hole drill, DTH). Drills used for horizontal drilling are called drifter drills.
In rare cases, specially-shaped bits are used to cut holes of non-circular cross-section; a square cross-section is possible.
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In rock drilling, the hole is usually not made through a circular cutting motion, though the bit is usually rotated. Instead, the hole is usually made by hammering a drill bit into the hole with quickly repeated short movements. The hammering action can be performed from outside the hole (top-hammer drill) or within the hole (down-the-hole drill, DTH). Drills used for horizontal drilling are called drifter drills.
In rare cases, specially-shaped bits are used to cut holes of non-circular cross-section; a square cross-section is possible.
View More On Wikipedia.org
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Expert drilling of porcelain tiles
Expert advice for professional installers on drilling porcelain tiles. By Richard Hazell of 365 Drills Background: Richard Hazell standing outside the house at 7am. Cold. And holding an internal light. Recently I was asked to drill 150 holes into very hard porcelain tiles in four...- Deleted member 1779
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- advice drilling porcelain porcelain tile porcelain tiles tile tiles usa
- Replies: 5
- Forum: UK Tiling Forum
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Diamond Drilling system
I recently saw a demo on the use the Diamond Drilling System and being new to this game was'nt sure what to make of the kit. However having recently priced up a bathroom thought i should purchase something in case I got the job, as there were pipes coming from all directions :whatchutalkingabout...- sean384
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- advice diamond drilling system usa
- Replies: 1
- Forum: UK Tiling Forum
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Drilling & cutting Travertine
Help, I have laid travertine on floors before, used the wet cutter with no problems. I'm about ti fix to some walls but I have pipse for the taps coming out of the wall, I was thinking that I could cut slots in the tiles then kit filling peices for the gaps above the pipes. Then I tought that...- City Tiler
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- advice cutting drilling travertine usa
- Replies: 2
- Forum: UK Tiling Forum
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