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Drill Hole In Clay?

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#1 paulw



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Posted 04 June 2014 - 10:09 PM



I am wondering what is the best way to drill a hole in clay. The project at hand is a ceramic base for a fountain and there needs to have a hole drilled in it for the electric cord. Any suggestions would be appreciated.


Many thanks,



#2 oldlady


    single firing an electric kiln to cone 6

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Posted 04 June 2014 - 10:12 PM

is it still greenware or a finished and glazed piece?


a drill will work at low speed on greenware.  you might approach a tile installer, the very best in town, if your piece is finished.

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#3 Mark C.

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Posted 04 June 2014 - 10:21 PM

If its fired use a diamond bit and go very slow with water or oil.


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#4 Marcia Selsor

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Posted 05 June 2014 - 12:23 AM

If it is leather hard use a fettling knife and twist it.
Marcia Selsor, Professor Emerita,Montana State University-Billings

#5 Pres


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Posted 05 June 2014 - 02:52 PM

In leather hard pieces where a cord is concerned I often use a piece of square pipe cut at an angle and ground. You can find these in most hobby stores as they are used for model railroads, and other models. These pipes come in a variety of round and rectangular shapes that give you nice patters when doing piercing in decorative items also.

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#6 TJR


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Posted 05 June 2014 - 02:57 PM

Best and most fun is a cordless drill on leatherhard clay. A fettling knife works well for one hole. You can control the diameter of the opening.


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