Cut Glass Bottles in Half With a Blowtorch

Introduction: Cut Glass Bottles in Half With a Blowtorch

About: Innovative Projects, Diy's, Life Hacks

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.

What's needed:

  • Turntable (Lazy Susan)
  • Blowtorch
  • 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

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.

Step 2:

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.

Be the First to Share

    Recommendations

    • Candy Speed Challenge

      Candy Speed Challenge
    • The 1000th Contest

      The 1000th Contest
    • Battery Powered Contest

      Battery Powered Contest

    4 Discussions

    0
    Ddawg747
    Ddawg747

    5 years ago

    A method i found even better is scoring the bottle then pouring boiling water on the line NOT THE WHOLE BOTTLE and then immediately running cold water on the line. Near clean cut every time and little sanding afterward required. AND the top is salvageable to make the bottle not leak if you glue it back on...or even tape it!!

    0
    PhilsTj
    PhilsTj

    5 years ago

    I am definitely going to try this. I have tried the burning string and ice water method a few times with no success. Your way looks better. Thanks for posting.

    0
    ShakeTheFuture
    ShakeTheFuture

    Reply 5 years ago on Introduction

    This method is definetaly better than the string.

    I still prefer a bottle cutter, but this one is a great alternative.

    Cheers