Quck answer
Cutting circles in plexiglass can be done using a few different methods. One option is to use a jigsaw with a fine-toothed blade specifically designed for cutting plastic. Another option is to use a hole saw attachment on a drill. This method is best for smaller circles. Alternatively, you can use a router with a straight bit and a circle cutting jig. This method provides precise and smooth cuts. Whichever method you choose, it is important to secure the plexiglass firmly and go slowly to avoid cracking or chipping. Always wear safety goggles and follow proper safety precautions when working with power tools.
Plexiglass, also known as PMMA (polymethyl methacrylate), is a type of transparent, light-weight glass substitute made from acrylic polymers. It can be molded into various shapes from its liquid state, but is typically used in project applications as sheets ranging from 1/16 inch to 3/4 inch in thickness. Acrylic sheets can be cut with most shop tools. Follow the steps below to cut a circle in a sheet of Plexiglass.
Step 1
Keep the backing paper attached to the sheet while cutting to prevent scratching and splintering. If the paper is already removed, apply masking tape to the areas that the tool will come in contact with.
Step 2
Secure the Plexiglass sheet to your work surface by clamping it or having someone hold it in place. Despite its pliability, PMMA is brittle and less forgiving than wood or metal.
Step 3
Use a Forstner bit to cut circles up to three inches in diameter. These bits have sharp cutting surfaces and will provide a clean cut. They are costly, but worth the investment if you need to cut lots of circles or work with thick sheets.
Step 4
Attach a hole saw to your hand drill or drill press to cut the hole. They are an inexpensive alternative to Forstner bits and are ideal if you need to cut only a few holes.
Step 5
For larger circles, use a saber saw or jigsaw with a fine-toothed blade. Mark or scribe the circle and drill a 1/4-inch pilot hole slightly inside the perimeter. Insert the blade through the hole to begin the cut, then saw along the circumference.
FAQ
1. What tools do I need to cut circles in plexiglass?
To cut circles in plexiglass, you will need a few essential tools. Firstly, you will need a circle cutter or a compass cutter, which allows you to create precise circles in the plexiglass. Additionally, you will need a utility knife, a ruler, and a cutting mat to protect your work surface. It is also recommended to have sandpaper or a file to smooth the edges of the cut circle for a clean finish. Safety goggles and gloves are important to protect yourself during the cutting process.
2. What is the best technique for cutting circles in plexiglass?
The best technique for cutting circles in plexiglass is to use a circle cutter or a compass cutter. Begin by marking the center of the circle on the plexiglass using a pencil or a marker. Adjust the circle cutter to the desired radius and attach it securely to the plexiglass. Apply gentle pressure and rotate the cutter in a clockwise direction to score the plexiglass. Repeat the process until the score line is deep enough. You can then snap off the excess plexiglass by applying pressure on the scored line. Finally, use sandpaper or a file to smooth the edges of the cut circle.
3. Can I use a jigsaw to cut circles in plexiglass?
While a jigsaw can be used to cut circles in certain materials, it is not recommended for cutting plexiglass circles. Plexiglass is a fragile material and using a jigsaw may cause it to crack or shatter. The high speed and aggressive cutting action of a jigsaw can generate too much heat and put excessive pressure on the plexiglass, leading to damage. It is best to use a circle cutter or a compass cutter specifically designed for cutting circles in plexiglass, as they provide more control and precision, resulting in clean and accurate cuts.