AKA - "A quick road to your local A&E"
Right, first thing's first. The disclaimer and health and safety bit, then we get to the science part
This tutorial is a rough guide to creating a home made electrical good. Neither myself nor Hexus.net are in any way responsible for your electrical burns, sliced fingers or ruining your mums favourite glass vase as practise. That said, every step I outline in this tutorial is relatively safe if you follow the instructions with a little common sense and a mind to what you're doing.
Now we're done with the disclaimer bit, go buy yourself some thick leather gloves and some safety specs, poundland stuff will do but just go do it. I know, I never use safety gear when I'm drilling metal or wood but you're about to drill through a piece of glass at several hundred RPM. Somewhere a risk assesor is bleeding from the ears already. Don't argue with me, they're your fingers and eyes, protect them as such!
Things you will need
Gloves
Eye protection
Your bottle of choice (I reccomend 70cl/1 litre bottles for the sake of scale and the extra weight)
The kitchen sink
A few old towels
A 10/12mm rubber grommet
A wine bottle stopper/optic seal
A length of 10mm threaded tubing
A rechargeable drill
An appropriate length of dual/tri-core electrical wire
Your lamp fitting and shade of choice
Tweezers
Screwdriver
WD40
Duct tape
freezer/greaseproof paper
And finally a 5mm and a 12mm Tungsten/Diamond core drill bit.
I'm going to talk about those for a second now before we get into step one because everyone that asks how these are made focuses on that aspect.
As you can see in the above image they're available in a variety of sizes from the 5mm on the left all the way up to the beast of an 18mm on the right. They're probably the most expensive single bit of your build if you don't have a kit lying around, 10/15 quid down your local builders merchant or DIY store will bag you the two drill bits you need for this project though so it's still not too bad. You can use diamond core bits, I haven't got any to picture but they'll work just as well with the techniques I use for these along with the added bonus of only needing a 12mm if you opt for those.
Step 1 -
Once you've rinsed it out, take a look at your bottle an work out where you want your cable to run out at the rear. Are there any ridges in the glass? There is one on the Jack Daniels bottle we're using as you can see, right inbetween the label and the base. It's not a problem but keep that in mind when you're thinking about your drill RPM later on, along with any seams or joins in the glass.
Step 2 -
Cut out some squares from your paper and tape them down as shown above, not only will they help protect the labels from water in the stages to come but if the glass does shatter for some reason it will help protect your hands too
Step 3 -
Measure in from each side and mark out where you want your hole to be, as you can see I've used an envelope label because they peel off easier than tape but you can just use duct tape if that's all you've got to hand. Make sure you leave as much space as possible between your hole and the base of the bottle, too tight a gap and the vibration might cause it to shatter along the joint later on.
Step 4 -
You're ready to start drilling, no need to run off to the sink just yet though. Rest the bottle on a towel to dampen vibration and start your hole using the 5mm bit. The label/tape should keep the drill from wandering around on the surface of the glass provided you start slowly. After around 30 seconds you should start to see dust collect around the tip of the drill bit. Take the label/tape away and you should have the beginnings of a small conical hole. Now you're ready to take it over to the sink and start drilling properly
Step 5 -
Take your bottle over to the sink.
You're going to want to run water over the contact point between glass and drill as you work to lubricate the bit and minimize the risk of a crack developing. As you can see above it doesn't have to be a torrent, just enough to keep things moving smoothly. Obviously I can't take pictures and hold the bottle and drill the hole (I tried later on and you'll see what that led to!) but as far as the drilling goes in the early going you can get away with a fairly high RPM, almost full speed on my drill but they're all different so apply that common sense we were talking about earlier.
If there's too much vibration in the bottle slow it down a notch or two, likewise, if there's a huge amount of chalky white powder collecting on the bit and a shriek like squeaking noise, slow it down and maybe think about increasing the amount of water you've got running. I cannot stress how much of this is common sense, if you want some practise first go buy yourself a large beer bottle, they're only a couple of quid and around the same thickness![]()


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