How to Cut Aquarium Glass

I’m going to show you how to cut aquarium glass. But, first, measure the dimensions of your tank with a ruler and make sure that you have all of the equipment needed, such as a hacksaw blade coarse and an extra blade for safety purposes.

Aquarium Glass

Use a piece of paper or cardboard to draw out your pattern on the glass to be lined upright. Once you are satisfied with your design, place both hands firmly on top of one another to steady the saw while cutting through the glass.

This should be done slowly but surely because if not, the glass will crack, and you will have to start over. If a crack occurs, use a nail or a screwdriver to pick at the cracked area until it breaks apart completely. This will make your job much easier.

Step to Follow on How to Cut Aquarium Glass

Step One: Locate

First, locate the glass cutter and the straight edge of metal or aluminum of some sort. Attach a washer to the top of the metal piece with either a screw and nut, safety pin and cork, or a drop of superglue. Please make sure the straight edge lays across the top of the washer without touching it.


Ensure that the glass cutter rotates freely. If it does not, loosen the nut on the opposite side of where you attached the washer. If the nut is too tight, you will need to file the nut down. If it still does not rotate easily, use a drop of oil on the thread to lubricate it.

Step Two: Set Up

Now that you have located the glass cutter and straight metal piece or ruler move them into position. The straight piece should be placed about one inch from where you want to begin cutting the further away from the edge; the more profound your cut will be and directly on top of a line or ruler.

The glass cutter should be placed about halfway between the edge of the glass and the straight metal piece on the same side as the ruler. Once everything is in position, begin drawing a line with a pencil on where you want to cut the glass.

Step Three: Score

Once you have drawn your line, begin to score the glass by making 2-3 passes over the same area with the glass cutter. Keep in mind that it needs to contact both the straight metal piece and your ruler when scoring. An excellent way to ensure this is keeping both of these objects flat up against a surface that will not move, such as a table or countertop.


Once you have made enough passes to ensure a deep score, set the glass cutter aside and pick up the metal piece in one hand and the ruler in your other hand. Put pressure on both ends of the ruler and give it a firm snap towards yourself. This should break off just above where you have scored the glass.

Step Four: Clean Up

Now that you have snapped off the extra piece of glass, you will need to clean up the edges, so they are smooth and even. Again, you can use a towel or rag soaked in water with some dish soap added and a metal file to get the edges smooth and even.

Remember that it is easier to fix any extra pieces you might cut off before you clean up the edge, so save yourself some work and set them aside. Once you have your edges clean and even, sit back and admire your work and get ready to add it to your aquarium.

Step Five: Add to Aquarium

There are a few ways you can add your plexiglass cut to your aquarium. The first is by drilling a hole and adding a screw and nut. This will allow you to fasten both sides of the glass together with little chance for the glass to move around while being attached.

Add to Aquarium

The second way involves using silicone. Use a generous amount of silicone on the backside of your new piece of plexiglass and attach it to the aquarium where desired. If you are connecting it over an area with a substrate, make sure to allow plenty of time for the silicone to dry before adding any substrate. This will help in how to cut aquarium glass.

Step Six: Maintain

Now that you have completed your project ensure that you maintain it properly. This may involve gently rinsing it with water or replacing the silicone every once in a while. If this is something you created for your aquarium, you will want to keep it looking its best at all times.

You can do this by checking for any holes or stress points that might be cause for replacement. If you find any, take the plexiglass off, reattach it with silicone, or use a stronger adhesive such as marine epoxy; if you have any questions, feel free to ask in the comments section below.

Step Seven: Enjoy

Now that you have completed this project sit back and enjoy the fact that you’ve saved some money on a new piece of glass. You can also take this time to get creative with how you cut the plexiglass to achieve different looks in your aquarium.

Just follow our guidelines in these simple steps to successfully get your plexiglass cut and ready to add to your aquarium. When you are prepared to cut, please pick up the glass cutter and place it directly on top of your pencil mark about halfway between the edge of the glass and where you want your straight line to be.

You can check it to Tell if Aquarium Glass Is Tempered .

Frequently Asked Question

What Is the Trick to Cutting Glass?

The trick to cutting glass is to use a diamond wire. This will remove the heat from the piece of glass and keep it cool enough for you to do your work without melting it.

To get started, lay down a layer of foil on top of the glass and place a layer of paper towel over that. Then, put a dab of silicone glue on one end of the diamond wire and press it into the paper towel.

What Tool Can Cut Glass?

There are many tools that can cut glass. One of the most common ones is a diamond blade saw, which can be used to quickly and easily cut pieces of glass with ease. Another option is using a laser cutter, which has been specifically designed for cutting glass without any hassle.

Do You Have to Use Oil When Cutting Glass?

No, you do not have to use oil when cutting glass. There are two different ways of cutting glass:

  1. The most common way is using a hot wire and an abrasive wheel that contains diamond particles or emery paper.
  2. Another method is using a laser cutter which uses ultraviolet light to cut the glass.

Can I Cut Glass With a Tile Cutter?

Yes, you can use a tile cutter to cut glass. However, it is not recommended as the cutting wheel of the tile cutter will be very sharp and could cause injury if used incorrectly.

Can You Use a Dremel to Cut Glass?

Yes, you can use a Dremel to cut glass. There are many different types of cutting tools that are designed for different materials. You can find the right tool for your task by browsing through their respective categories.


One way to cut aquarium glass is with a jigsaw or scroll saw. This can be done by using the inside of the tank as your guide and holding it up against the blade for an accurate, straight line.

Suppose you’re not comfortable handling this type of power tool. In that case, other options will work just as well, such as cutting through sheets of tempered glass usually available at most hardware stores or scoring and snapping them in half along a scored line with a hammer and chisel.

The important thing here is to make sure you wear protective eyewear when working with any sharp object! Finally, the conclusion paragraph is informative and provides information on how to cut aquarium glass.

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