PLEASE NOTE: Until further notice, our store in Rockland will be open BY APPOINTMENT ONLY, Monday through Saturday from 10:00 a.m. to 2:00 p.m. We are offering 15-minute time slots, and you may reserve up to 30 minutes. To reserve your time slot, call us at 781-871-1790. You may also place your order online and select "Pickup" as the shipping method. You may then pick up your order during reasonable hours (approx. 8a-6p Mon-Sat). You will need to wear a mask during your visit, and we kindly ask that you wash your hands or use sanitizer when you arrive. We look forward to seeing you!
Our store in Rockland will be closed Saturday, November 28.

Whittemore-Durgin Stained Glass Supplies
825 Market St., Rockland MA 02370
Phone: 781-871-1790  Toll-free: 800-262-1790
Stained glass supplies, art and architectural glass, and so much more.
Find us on Facebook   

Read about our stained glass classes
 

Stained glass supplies, art and architectural glass, and much more.

Here's how you got here:
Skip Navigation LinksHome Breadcrumbs Glass GRINDERS, Saws, and Stuff Breadcrumbs Grinders & Accessories Breadcrumbs Diamond Glass Drill Bits

Diamond Glass Drill Bits

Diamond Glass Drill Bits

Diamond drills are used to drill holes in glass, mirrors, ceramic, tile, slate, plastic, fiberglass, stones, or pottery.

They are made by diamond coating one end of a solid rod (wire drills) or hollow tube (core drills). They work with a standard electric drill, drill press or rotary tool (like a Dremel). However, unlike standard drill bits that simply cut a hole, wire drills and core drills work by gently grinding the glass to remove a complete circle. 

This process takes time; be patient. You should not use full power when drilling holes in glass, otherwise you might heat up the glass too much and crack it. Remember, you are not so much drilling as you are slowly grinding or carving some of the glass away. 

Tip: Start your drilling at a 45 degree angle to the glass, then gradually bring your drill up to the more conventional 90 degrees.

You must keep the glass cool; try spraying it with water often, or drilling against a wet sponge. You can also keep water on your drilling surface by using glazing compound or putty to create a sort of dam around it, to ensure the water stays in place.

Mr. Raphael Rafferty of Kissimee, AZ says "I used my #6977 core drill to make a hole in my picture window to let Adrian, my pet Army Worm get in and out. It sure beats having to get up in the middle of the night to let him out to visit his rowdy friends down at the fire house."


Wire Drills
Core Drills
Core Drills

For drilling holes in glass, mirrors, ceramic, ceramic tile, slate, plastic, fiberglass, stones, or pottery.

Inland 1/8" Core Drill
Inland 1/8" Core Drill
Item no: 6973
Inland/Reentel International item: 40060
Retail price:
each: $19.86
package of 6: $119.16
6 or more $17.87 (10% discount)
In stock:  5  (units: each)
Available while supplies last.
Click to view or buy this item
 

Shaft Size: 3/8" (10mm)
Diameter: 1/8" (3 mm)

Inland 3/16" Core Drill
Inland 3/16" Core Drill
Item no: 6974
Inland/Reentel International item: 40061
Retail price:
each: $20.85
package of 6: $125.10
6 or more $18.77 (10% discount)
In stock:  3  (units: each)
Available while supplies last.
Click to view or buy this item
 

Shaft Size: 3/8" (10mm)
Diameter: 3/8" (10mm)

Diamond Tech 1/4" Core Drill Bit
Diamond Tech 1/4" Core Drill Bit
Item no: 6975D
Diamond Tech item: 38
Retail price: $20.36 /each
3 or more $18.32 (10% discount)
6 or more $16.29 (20% discount)
In stock:  6  (units: each)
Click to view or buy this item
 

Shaft Size: 3/8" (10mm)
Diameter: 1/4" (6.35mm)

Diamond Tech 3/8" Core Drill
Diamond Tech 3/8" Core Drill
Item no: 6976D
Diamond Tech item: 39
Retail price: $20.64 /each
3 or more $18.58 (10% discount)
6 or more $16.51 (20% discount)
In stock:  3  (units: each)
Click to view or buy this item
 

Shaft Size: 3/8" (10mm)
Diameter: 3/8" (9.5mm)

Inland 1/2" Core Drill
Inland 1/2" Core Drill
Item no: 6977
Inland/Reentel International item: 40064
Retail price:
each: $28.02
package of 6: $168.12
6 or more $25.22 (10% discount)
In stock:  5  (units: each)
Available while supplies last.
Click to view or buy this item
 

Shaft Size: 3/8" (10mm)
Diameter: 1/2" (13mm)