Bottle cutting is a great way to recycle glass bottles and a wonderful reason to have a drink :)
There are a few ways to cut glass bottles without a bottle cutter.
In this Instructable, we'll have a look at a way to cut glass bottles in half by using a blowtorch.
This method is also known as cracking off glass.
- Turntable (Lazy Susan)
- Glass cutter
If you don't have a glass cutter, you can use a metal saw. Break the saw in half and use the sharp corner to scratch the line on the bottle
If you are Interested in a video version of this Instructable and the embedded video does not appear on your mobile device, here is an alternative link
Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Score/Scratch a Short Line Onto the Bottle
For your own safety, wear gloves and goggles.
Make sure to remove any corks from the bottle you are going to cut.
Score or scratch a short line onto the bottle. You will want to do it as straight as possible.
It's a good idea to use a practice bottle.
Put the Bottle in the center of the turntable,
Keep the torch in the same height as the line.
Spin the turntable and heat the bottle until the line expands and splits the bottle in half.
You can sand the bottle to make a drinking glass or anything else.
I like to use silicone carbide powder to sand the bottle. It's quick and effective.