Coppice
SE-OH USAian
Posts: 300
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| Posted: Mon Mar 28, 2011 11:31 am Post subject: |
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Buy a set of masonry bits. Start out with a smaller size (It'll drill easier) do a second round with larger bits.
I like using a power drill and going at 'it' from both sides, an extension may also help.
More than a couple of older bonsai pots I have seen, had intentionaly larger holes cut into bottoms.
Really rugged stoneware eats masonry bits, and spits the fragments out and laughs. 
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Giving away OP seeds, and bad gardening advice since 1992.
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KK Ng
Malacca, Malaysia.
Posts: 1297
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| Posted: Mon Mar 28, 2011 12:40 pm Post subject: |
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I had drilled holes in flower pot before using drill bits same as those mentioned by Sojerd which is masonry bits as mentioned by Coppice. To use this kind of drill bits you would need a hammer drill. Since your pots must be precious to you I would suggest that you use diamond drill bits - http://www.diamonddrillandtool.com/ - it is much safer and easier to use. However if you do decide to make use of the masonry drill bits be very careful and gentle. Good luck!
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Jerry Sullivan
 Regular Plants Contributor
Chelmsford MA
Posts: 3061
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| Posted: Mon Mar 28, 2011 1:04 pm Post subject: |
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These are drills i have used for ceramic pots I don't see why they would not work on terracotta.
Jerry
Drill bits ( photo / image / picture from Jerry Sullivan's Garden )
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cherylad
Regular Plants Contributor
S. Liberty County - Texas
Posts: 5278
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| Posted: Mon Mar 28, 2011 1:14 pm Post subject: |
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Most important, after the right drill bit, is too take your time. I learned the hard way trying to get it done quickly and the pot cracked. Luckily it was just a cheap pot. Good luck!
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fish_4_all
Zone 8-9 Washington
Posts: 557
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| Posted: Thu Apr 28, 2011 6:23 pm Post subject: |
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Just wantedto add that a Dremel may work really well for drilling holes. The high speed and using a grinding bit can make a hole fast and easily. Just be very careful because the pots will eat the bits and if they get too wore down they can shatter and throw shards a long way. I have drilled a lot of Ceramics and clay pots with them without breaking any of the pots. Bits broke but not the pots.
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calinromania
Oradea, Romania
Posts: 987
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| Posted: Fri Apr 29, 2011 5:43 am Post subject: |
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WOW. COOL. Well, my dad is the handyman. I will ask him to help. I also got about 20-30 small-small pots, like the cactus/succulent type, and i was really happy. For as short while!
A lady I do some swaps here in my city asked me if i wanted them cause she was just gonna give them away and it sounded really a great deal. (I gave her some plants from the garden).
But when I looked at them, they were perfect size (I mean small), clay, but NO HOLES...
SO I'd better get busy! 
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AAnightowl
Posts: 451
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| Posted: Wed May 04, 2011 12:28 pm Post subject: |
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Doesnt terracotta drain itself naturally, so no holes ought to be needed? I would test it by putting water in it [outdoors] and seeing if it already drains or not. Unglazed pottery usually does.
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waretrop
Posts: 839
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| Posted: Sun Oct 09, 2011 12:57 am Post subject: "Drilling" holes into clay pots? |
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Calin, I have drilled holes in all kind of things. Some tarra cotta pots have a glaze on them that is hard as a rock and impenetrable. Most are ok if you use a cement bit or glass bit or masonery bit. When you start dip the bit in some cooking oil and that will help keep things cool. I re dip often. Something to remember, you always take that chance of breaking the pot if you push on the drill too hard, but what is too hard. Experience teaches you that. 2 pots is not enough experience.
Barb in Pa and new here. LOL
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waretrop
Posts: 839
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| Posted: Mon Oct 10, 2011 11:37 am Post subject: "Drilling" holes into clay pots? |
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It's been a while since you started this. Did you succeed in drilling holes in the 2 pots? I did about 50 many years ago. Some had this shiny hard finish that couldn't be penetrated but most went great. I probably had the wrong bit for those with that hard finish.
When I first started I cracked some without oil and with too much pressure. That's where you get that experience.
I also drilled holes at the bottom inch of a side of about 100 fish tanks. There is where you need the oil. I only cracked about 2 of them and each hole took about 12 minutes. It was nerve wracking.
A pro would have knocked them out in no time but my way was cheaper. LOL
Barb
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Ever green
Cincinnati
Posts: 8
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| Posted: Sat Oct 15, 2011 3:31 am Post subject: |
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Did you have any luck with the cement bits? I imagine, with the glaze on most pots, a diamond or glass bit would be the way to go. Let us know how it worked out!
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