Rows of wine bottles.

How To Cut Glass Bottles With A Dremel

Originally contributed by • last updated 4/29/2021

5 minsPrep Time
15 minsActive Time
EasyDifficulty
Dan-Cristian Pădureț
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Unsplash
5 minsPrep Time
15 minsActive Time
EasyDifficulty

Old wine bottles are a staple material for DIY projects.

They’re sturdy glass pieces that can be used for anything from candle holders, glasses, planters, lamps, and everything in between.

Parafernalia Blog
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YouTube

One question we often hear from people is "How to cut a wine bottle in half?" and the answer is simple: with a Dremel tool.

To demonstrate the process, we’ll be walking you through step-by-step by the incredible YouTube video by Parafernalia Blog, where she teaches how to easily cut the bottom off glass wine bottles with a Dremel tool.

Info: Similar to how people refer to the brand Kleenex when they want a facial tissue, such is the case with Dremel. Dremel is a brand name often used generically to indicate any rotary tool, regardless of brand.


Any rotary tool will work for this project, but we’ll stick with the common usage term and call it a Dremel.

Let's Make It

Equipment

  • Safety glasses
  • Safety mask
  • Dremel (rotary tool)
  • Diamond cutting disk attachment
  • Sanding attachment

Materials

  • Glass wine bottle
  • WD-40
  • Tape
  • Sandpaper (for glass)

Cutting Glass Wine Bottles In Half With A Dremel Tool How-To Guide

01/5

Mark Your Cutting Path

Parafernalia Blog
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YouTube

When cutting glass bottles with a Dremel, it can be challenging to keep a straight line unless you mark it out first.

Wrap the wine bottle with tape to create the cut line.

Tip: Tape is better suited than ink to make a cut line when cutting glass bottles with a Dremel tool.


This is because the WD-40 used to lubricate the glass during cutting can wash away or smudge lines made with a marker.

02/5

Make The First Notch

Parafernalia Blog
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YouTube

Before cutting around the entire circumference of the glass wine bottle with a Dremel tool, it’s best to make a small notch first. That notch will be your starting point as you carefully cut all the way around.

First, put your mask and safety glasses on.

Place the bottle on a stable work surface that won't wiggle or shift while the Dremel tool — and its very sharp blade — is in motion.

Spray WD-40 on the spot on the glass where you’ll make your notch. This will lubricate the Dremel as it cuts the glass wine bottle in half, and avoid future statements of, "I don’t understand how it cracked!"

Info: Lubricating the bottle ensures the Dremel cutting wheel doesn’t heat up when cutting the glass wine bottle, which could cause the glass to shatter.

Using the edge of your tape line as a guide, slowly press the Dremel’s diamond cutting wheel into the glass until you have punctured all the way through.

03/5

Cut The Rest Of The Bottle

Parafernalia Blog
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YouTube

Carefully expand on your first notch using the Dremel’s diamond cutting wheel until the glass bottle is completely cut in half (or however you need it for your particular DIY project).

Continue to apply the WD-40 to the glass as you work your way around the circumference of the bottle. Never touch the cutting wheel to a spot that isn't lubricated first.

Warning: Due to the nature of a glass wine bottle, it can be awkward to hold steady while you are cutting. For safety, always hold the bottle at the end farthest from where you are cutting.


While working, angle the bottle and Dremel tool away from yourself in case the cutting wheel slips.

04/5

Sand Your Glass Bottle With The Dremel

Parafernalia Blog
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YouTube

Now that you know how to cut a glass wine bottle in half with a Dremel tool, it’s time to learn some finishing techniques.

The glass at this point will be jagged and sharp, and therefore hazardous, especially if you’ll be using the cut half of the wine bottle as a drinking glass. We certainly don’t want a sharp edge as we’re sipping on our favorite beverage!

Switch the bit on your Dremel to a sanding/grinding attachment and add more WD-40 to the cut edges of the glass for lubrication.

Work the sanding attachment over the cut edges of the glass bottle until they are even and smooth, applying more lubrication as necessary.

05/5

Hand Sand Your Wine Bottle

Parafernalia Blog
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YouTube

Use a high grit sandpaper suited for use on glass, and thoroughly wet the sandpaper with water. Sand along the cut edges of the wine bottle until they are smooth.

Now just wash the bottle and wipe any remaining oil or glass shavings, and you’re done!

Parafernalia Blog
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YouTube

We hope you enjoyed our step-by-step how-to guide on cutting glass bottles with a Dremel, and we’d like to thank Parafernalia Blog for her video.