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Core Drill Bits

Diamond Drill Bit
Tile Drill Bit, Glass Drill Bit

Diamond Tip Drill Bit, Diamond Hole Saw

Diamond Drill Bits for Tile and Glass

Specifically Designed for Drilling Holes In  
  Glass Marble Limestone Slate
  Glass Jars Ceramics Porcelain Granite
  Stained Glass Ceramic Tile Porcelain Tile Stone
 

(Designed for materials to about 1/2" Thick)

Electroplate Bonded Diamond Tip Drills

Diamond Drill Bits, are also know as a Diamond Tip Drill or Diamond Hole Saw.  They are often thought of as a Glass Drill Bit or Tile Drill Bit, but a Diamond Tip Drill Bit is much more versatile since they are used to drill glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, granite, light stone, and fiberglass.  Water is required for lubrication when drilling.

Old fashioned Spear Point carbide bits no longer work
on the new type of super-hard floor, counter and wall tiles.

Diamond Drill Bits are the solution.

Hole Saw style drill bits have a hollow center and cut a circle in the material to create a hole. This results in a hole the size of the bit and a smaller "plug" or "core" which comes from the center.  They are sometimes referred to as a Core Drill Bit, however, technically core drill bit sizes relate to the size of the core, not the hole size.  The Drills are available below in sizes from 5/64" to 5-1/2" (outside diameter).  The metric manufactured size of each bit is also shown below (mm), along with the exact inch measurement of each bit.

Space Holder Diamond bits are easy to use, however, there are many special techniques which are different from standard steel-bit drilling.  Usage can also vary depending upon the type and the specific manufacturer.  To assist our customers, we have compiled an extensive and detailed Drilling Tips & Techniques section.
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Diamond Tip Drill Bits

 

Recommended Drill Speeds

DiamondSure - Bonded Bits

Recommended Drill Speed (rpm)

Material         Bit Size --> 

1/2"

1"

2"

3"

4"
 Fiberglass

1200

700

350

250

175
 Glass, Ceramic & China

800

500

250

160

125
 Limestone & Marble Stone

600

450

225

130

100
 Ceramic Wall Tile

600

450

225

130

100
 Porcelain Wall Tile

500

375

180

125

90
 Porcelain Floor Tile

500

375

180

125

90
 Granite Stone

400

300

150

100

75
(Not for use on Concrete or for depths beyond about 1/2")

SPEED KILLS:  Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably.
Space Holder .
Because these drill bits are used to drill in extremely hard materials, it is very important to use proper drill pressure to keep from overheating the bit.  Excessive pressure is merely converted to heat energy and can burn up a bit very quickly.
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Electroplate Bonded Bits

Recommended Drill Head Pressure

Material

Drill Head Pressure *
 Fiberglass

10 to 15 lbs.
 Limestone & Marble Stone

12 to 18 lbs.
 Glass, Ceramic & Porcelain China

12 to 18 lbs.
 Ceramic or Porcelain Wall Tile

15 to 20 lbs.
 Porcelain Floor Tile

18 to 30 lbs.
 Granite Stone

18 to 30 lbs.
* WARNING:  Drill press arm leverages hand pressure by a factor of about 6 to 8.  So 2 lbs. of hand pressure on the drill press arm will apply about 14 lbs of pressure to the drill head.

All these drill bits have shaft sizes of 3/8" or less, for use in standard drills.  For detailed drill bit size information (total length, shaft length, bell length, etc) - Click on the Detail Page link for each drill bit listed below.

IMPORTANT
Diamond drill bits require the use of proper lubrication, correct
drill speed and proper pressure.  Drilling methods and techniques
vary significantly depending upon the material being drilled.
Not for use on Concrete or with Hammer-Impact Drills,
or for depths beyond about 1/2"

Please See: Drilling Tips & Techniques

 

Glass Drill Bit / Tile Drill Bit / Diamond Tip Drill Bit

Measurements Shown Below are Outside Diameter
(Click on individual drill bit pictures for detailed specifications)

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--- Item ---

  Price
  Qty / Order?

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Glass Drill Bit
5/64"   1/8"   3/16"   1/4"

DT-502  5/64" Diamond Bit (2.0mm/.08")

    
See Detail Page for Pictures & Specs
ea  11.95
12+ 10.56
30+   8.97
90+   7.74
   

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Glass Hole Saw
5/64"   1/8"   3/16"   1/4"

DT-503  1/8" Diamond Tip Drill (3.3mm/.13")

    
See Detail Page for Pictures & Specs
ea  12.95
12+ 11.36
28+   9.67
85+   8.44
   

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1/4" Diamond Core Drill
5/64"   1/8"   3/16"   1/4"

DT-505  3/16" Drill (4.9mm/.19")

    See Detail Page for Pictures & Specs
ea  13.95
10+ 12.26
26+ 10.47
80+   9.14
   

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3/16" Core Drill Bit
5/64"   1/8"   3/16"   1/4"

DT-507  1/4" Diamond Bit (6.5mm/.26")

    See Detail Page for Pictures & Specs
ea  14.95
10+ 13.16
24+ 11.27
72+   9.74
   

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3/8" Glass Bit
5/16"          3/8"

DT-508  5/16" Drill (8.1mm/.32")

    See Detail Page for Pictures & Specs
ea  15.95
9+  13.96
24+ 11.97
72+ 10.34
   

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3/8" Core Drill Bit
5/16"          3/8"

DT-515  3/8" Diamond Tip Bit (9.7mm/.38")

    See Detail Page for Pictures & Specs
ea  16.95
9+  14.96
22+ 12.77
68+ 10.94
   

Diamond Drill Bit Set


Diamond Drill Bit Set
1/4", 5/16", 3/8", 1/2"
                       Diamond Drill Bit Set
                   SAVE 35% on Assortment! 
DT-590  4-Pack Diamond Drill Bit Set
                   
(Sizes: 1/4", 5/16", 3/8", 1/2")

    See Detail Page for Pictures & Specs
ea  43.72
5+  40.96
12+ 38.67
26+ 36.34
   
        35% Off Individual Bits Purchased Separately!

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1/2" Diamond Tip Drill Bit for Glass
1/2"            5/8" 

DT-516  1/2" Diamond Bit (12.9mm/.51")

    See Detail Page for Pictures & Specs
ea  18.95
8+  16.76
20+ 14.27
64+ 12.34
   

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5/8" Porcelain Tile Drill Bit
1/2"            5/8" 

DT-517  5/8" Drill (16.1mm/.63")

    See Detail Page for Pictures & Specs
ea  21.95
7+  19.36
18+ 16.47
55+ 14.24
   

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Diamond Drill Bit Set
3/4"                7/8"

DT-518  3/4" Drill Bit (19.3mm/.76")

    See Detail Page for Pictures & Specs
ea  24.95
7+  21.96
16+ 18.77
50+ 16.24
   

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7/8" Ceramic Tile Drill Bit
3/4"                7/8"

DT-519  7/8" Drill (22mm/.87")

    See Detail Page for Pictures & Specs
ea  26.95
6+ 
23.76
14+ 20.17
45+ 17.54
   

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1" Tile Drill
1"                   1-1/8"

DT-520   1"   Drill Bit (25.7mm/1.01")

    See Detail Page for Pictures & Specs
ea  29.95
6+  26.36
14+ 22.47
45+ 19.44
   

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1-1/8" Porcelain Tile Drill Bit
1"                   1-1/8"

DT-521  1-1/8" Bit (28.8mm/1.13")

    See Detail Page for Pictures & Specs
ea  30.95
6+  27.26
14+ 23.27
45+ 20.14
   

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1-1/4" Ceramic Tile Drill Bit
1-1/4"                    1-3/8"

DT-524  1-1/4" Drill (32mm/1.26")

    See Detail Page for Pictures & Specs
ea  33.95
5+  29.96
12+ 25.47
38+ 21.94
   

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1-1/4" Hole Saw
1-1/4"                    1-3/8"

DT-525  1-3/8" Drill Bit (35mm/1.38")

    See Detail Page for Pictures & Specs
ea  36.95
5+  32.86
12+ 27.97
38+ 23.44
   

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1-1/2" Fiberglass Bit

DT-526  1-1/2" Drill Bit (38.4mm/1.51")

    
See Detail Page for Pictures & Specs
ea  39.95
4+  35.56
10+ 30.37
32+ 26.34
   

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1-3/4" Glass Drill Bit Set

DT-528  1-3/4" Drill Bit (44.7mm/1.76')

    
See Detail Page for Pictures & Specs
ea  44.95
4+  39.96
10+ 34.17
32+  29.64
   

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2" Diamond Hole Saw

DT-530  2" Diamond Hole Saw (51.1mm/2.01")

    
See Detail Page for Pictures & Specs
ea  51.95
3+  46.26
8+  39.47
25+  34.34
   

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2-1/4" Hollow Tip Bit

DT-534  2-1/4" Drill (57mm/2.25")

    
See Detail Page for Pictures & Specs
ea  56.95
3+  51.26
7+  43.87
24+  38.24
   

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2-1/2" Bonded Diamond Bit

DT-536  2-1/2" Bit (63.9mm/2.51")

    See Detail Page for Pictures & Specs
ea  59.95
3+  53.96
6+  46.17
20+  40.24
   

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2-3/4" Porcelain Tile Drill

DT-538  2-3/4" Drill Bit (70mm/2.76")

    See Detail Page for Pictures & Specs
ea  66.95
3+  60.26
6+  51.57
20+  44.84
   

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3" Diamond Hole Saw

DT-540  3" Diamond Hole Saw (76.5mm/3.01")

    See Detail Page for Pictures & Specs
ea  74.95
2+  67.46
5+  57.77
16+  50.34
   

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3-1/2" Porcelian Tile Drill Bit Set

DT-546  3-1/2" Drill Bit (89mm/3.51")

    See Detail Page for Pictures & Specs
ea  85.95
2+  78.46
5+  66.97
16+  58.44
   

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4" Diamond Hole Saw

DT-550  4" Diamond Hole Saw (102mm/4.02")

    See Detail Page for Pictures & Specs
ea  98.95
2+  89.96
5+  77.27
15+  67.34
   

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4-1/2" Tile Drill

DT-556  4-1/2" Diamond Bit (115mm/4.52")

    See Detail Page for Pictures & Specs
ea 109.95
2+ 99.96
4+  83.27
13+  69.34
   

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5" Porcelain Tile Drill

DT-560  5" Drill (125mm/4.9")

    See Detail Page for Pictures & Specs
ea 119.95
2+ 107.96
4+  90.27
12+  78.34
   

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5-1/2" Glass Hole Saw

DT-565  5"-1/2 Diamond Bit (140mm/5.51")

    See Detail Page for Pictures & Specs
ea 129.95
2+ 119.96
4+  114.27
12+  89.34
   

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See also:  Diamond Tip Drill Bit - Drilling Tips & Techniques

 

 

 

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Stained Glass Drill

 

 

 

 

 

Diamond Tipped Drill Bit Set

Solid Diamond Tip Drill Bit

Electroplate Bonded Solid Diamond Tip Drill Bit

For drilling glass, stained glass, china plates & fiberglass!

Blunt Nose Diamond Tip Drill Bits work with any drill - just add water for lubrication.  Glastar brand drill bits are much easier and safer to use than old-fashioned spear point steel drills and don't chip the work material.  Blunt Nose Drills are primarily a Glass Drill Bit, for use on glass, stained glass, china plates or fiberglass.

These solid point bits are not designed for as a Tile Drill Bit and should not be used for drilling porcelain tile, floor tile, limestone, slate, marble, granite or other stones.  Glastar Blunt Nose Drill Bits are designed to be used at high speeds up to 10,000 rpm.

Since Glastar Diamond Tip Drill Bits have a solid rounded tip, they are slightly easier to start when drilling on a curved surface, such as a bottle, when compared to using a Core drill bit, above.  However, since solid tip drill bits drill out the complete hole, they also drill more slowly than the hollow core style bits and they are generally not used on the super hard abrasive materials such as ceramic tile, porcelain tile, floor tile, limestone, slate, marble, granite or other stones.  Hollow core style drill bits are recommended for drilling in these very hard materials and are available from 1/8" to 4" in the section, above.  See also How to Use Diamond Bits.

--- Item ---

Price
Qty / Order?
 
TL-340  1/8" Solid Diamond Tipped Drill
Out of Stock - Discontinued
                        
(Shaft size 1/8")

27.95
 
TL-341  1/4" Solid Diamond Tipped Drill
                        
(Shaft size 1/4")

28.95
 
TL-342  3/8" Solid Diamond Tipped Drill
                        
(Shaft size 1/4")

29.95
 


 

 

 

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Diamond File
Half-Circle shaft profile
shown in lower left of picture.

Diamond File

General Purpose File With 'Half-Circle' Shaft Profile

Diamond coated file is 7" long with "half-circle" shaft.  A perfect general purpose file for use on flat, rounded or curved edges.  Use on glass, stained glass, ceramic, marble, stone, fiberglass or plastic.  Blade of file is 3/8" wide, tapering to a point.  Perfect for filing off sharp edges, reshaping cuts or reaming drilled holes.  Handle is vinyl coated for safety and comfort.

DF-151  7" Diamond 'Half-Circle' File ........... ea 12.95 / 3+ 11.63 / 8+ 9.29

                                 Sorry - Out of Stock

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How to Drill Glass and Tile




How to Use Diamond Drills


 

 

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