I got my drill bits a couple weeks ago. I want to drill a couple scrap bottles and older pots first to figure things out. I'm sure I'll break stuff even following directions and learn from it (drilling over a seam, curve etc...) Then I'll try it on a nicer pot I don't mind breaking lol
I'm sure glass, clay and ceramic all cut differently in terms of speed, power, water etc... needed. No need to rush. Eventually I want to be able to confidently drill a tank if I wanted to do something more complex some day.
Then probably break the nice one knowing me lol
Pond grass maintenance and loving the woot growth of the willow.
Tip for drilling glass - I started by drilling holes in reptile vivariums.
First, I used the diamond hole saw to drill a hole in a foot long piece of a 1x4 plank with the same diamond drill I was going to use to drill the glass.
Then I taped the drilled wood to the glass with the hole right where it needed to be, Tspe the backside of the glass to catch fallout and reduce chipping.
The hole in the wood was a perfect guide to keep the drill precisely on target and allowed me to keep it as vertical as possible instead of rocking it to dig in. Drilled very slow without any pressure other than the weight of the drill itself.
The wood keeps some water right where you need it to cool & lube the drill. I kept a little glass of water handy and added a bit more into the hole around the drill frequently because keeping the drill cool & wet helps it cut better and last longer.
Drill
slooowlyyy - if you usually run a drill at top speed, practice controlling the trigger so you can go slow. Too fast is counterproductive - ask me how I know that

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Put something soft underneath where any drilled out material might land so it does no harm to what it might land on - an opposite glass pane for example.
So far I have found it to be very easy to drill flat glass.
Rounded surfaces are bound to be a bigger challenge, have to see how that goes when I try some.
Some ceramics are more difficult to drill than glass is and even more likely to chip. A layer of tape over both top & bottom surfaces may help reduce chipping but the cleanest side is going to be the one you start with - the backsides are messier.
Hope any of these tips may save you some aggro and lead to good results.
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