How to Cut Bottles in Half (Lengthwise)

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Introduction: How to Cut Bottles in Half (Lengthwise)

About: Innovative Projects, Diy's, Life Hacks

If you are looking for a way to up-cycle glass bottles, this might be for you.

In this Instructable, we look at one of the ways to cut glass bottles lengthwise.

You can make interesting bottle dishes, planters and other cool things.

Some of the materials/tools used:

For your own safety:

Make sure to use a cordless rotary tool, not one with the cable.


If you are Interested in the video version of this Instructable and the embedded video does not appear on your mobile device, here is an alternative link

Step 1:

First I marked a cutting line with a copper adhesive tape.

You can use a permanent marker or don't mark the bottle at all.

Some bottles will have a line on the sides.

I prefer to use the tape as it's easier to see it.

Step 2:

You will want to lubricate and cool the bottle with water.

Since I don't have a workshop, I had to do it in the kitchen.

I used a suction vise to hold the bottle.

It's perfect as you can attach it to the sink.

Step 3:

Take a cordless rotary tool with a diamond cutting disk.

Start cutting the bottle while pouring/running the water on the spot you're cutting.

It can get wet, so you might want to cover things near your sink with the plastic.

First I cut one side of the bottle, then the bottom and then the other side.

Step 4:

Most likely the cut will not be perfect and you will want to sand it.

I used silicon carbide powder.

You mix it with water and sand the bottle on top of a piece of glass.

You can also use a wet sandpaper or a rotary tool with a sanding bit.

Step 5:

In one of the bottles I planted a wheat grass and other I used as a dish.

2 People Made This Project!

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38 Comments

0
AndreaS214
AndreaS214

Question 2 months ago on Step 3

Does it matter where you make the initial cut into the glass, i.e. neck, body?

1
turnbeau
turnbeau

Question 2 years ago on Introduction

Hopefully this reaches you since the post is a few year's old. What grit of silicon carbide powder did you use? Looking to make some of these bottles for an animal charity. Thank you.

0
RajuV6
RajuV6

4 years ago

Good reclaimation. Whether Drexel corded typos with flexible shaft can be used?

0
Raitis
Raitis

6 years ago

Great work, I admire the patience to do it with a rotary tool and sand by hand!

If you have the space and area for it and plan on cutting more, just get a wet tile cutter for this with a thinner disc for glass. Makes it all a lot easier, I've cut bottles with one in almost any direction, including longitudinally (odd time, for a magazine cover).

awMQd7t[1].jpg
0
Kanyoi
Kanyoi

Reply 4 years ago

Hello Raitis, please confirm the model of tile saw that is best for cutting glass bottles as well as the best model of diamond wheel. In short tell us what you use. Also please tell me how long it takes to cut one bottle using the tile saw

0
Kanyoi
Kanyoi

Reply 4 years ago

Thank you

0
Raitis
Raitis

Reply 4 years ago

Hi Kanyoi, any wet tile saw should do the trick with the standard diamond wheel. My cutter doesn't spin exactly straight and the wheel has some vibrations and therefore chips the glass more than it otherwise would which is why I can't recommend anything in particular.

As for the cutting disc - I recomment changing the standard one to a thinner one. Can't recall what the thickness of mine is right now, but the thinner it is - the better should the cut quality be. My guess is that something like this would be the best. Although the lifetime of it might be lower and you don't have to go that fancy for a nice cut. Just look for a disc that's thinner than your standard one and you're moving in the right direction.

Keep in mind that for a perfect rim you will still need to do some finishing work regardless of the blade you use.

0
gravityisweak
gravityisweak

Reply 6 years ago

Wow, that's a great photo!

0
Raitis
Raitis

Reply 6 years ago

Can't take credit for that, I only cut that bottle and glued the cork in! :)

0
corporatelab
corporatelab

Reply 6 years ago

Raitis, what an amazing job of (what I would call) cross-sectioning. This is truly awesome. I'm not sure what a wet tile cutter looks like, but it sure looks worth finding out.

0
ShakeTheFuture
ShakeTheFuture

Reply 6 years ago

I did not take that long, but If I will ever want to cut many bottles (set of 12 ice cream dishes), wet tile saw sounds like a good option.

Thank You!

0
Laral
Laral

6 years ago

This is the best method I could find for doing this. How long did it take to cut the bottle? What grit silicon carbide powder?

0
jeanniel1
jeanniel1

6 years ago

OK, so I thought with the copper tape you were going to heat pop the bottle in half, but you used the diamond blade dremel --- lots of manual labor, but good job. The coup de grace - sanding the bottle - perfect!!! This is what we do for making sure what we are sanding it perfectly flat for post-glass blowing finishing! Well done.

0
Laral
Laral

Reply 6 years ago

Same here. I anticipated connection to a high-current source, like a car battery. :)

0
Lavoz24
Lavoz24

6 years ago

I have been searching for an ible on how to do this. As yourself, I also thought it would be nice to use them as dishes It's also arum way to portion control and as I host picnic style lunch and dinner parties in the spring/summer/fall I will now do this to use for some of the this year.

My reason for not doing it sooner is because I couldn't get around the whole using a string with acetone lengthwise. I tried and failed because I couldn't get it straight or it would just slide off and I could never get it to tighten enough.

Many thanks for sharing this ible with us. I will post pics and maybe a small video when I do this.

0
ShakeTheFuture
ShakeTheFuture

Reply 6 years ago

I am glad you found it helpful.

Cheers!

0
debzam
debzam

6 years ago

:) I like the idea of using it as an ice cream dish.

0
Eh Lie Us!
Eh Lie Us!

Reply 6 years ago

My thoughts EXACTLY! Great, great idea. Thank you for posting.