How to Permanently Bend Acrylic Sheet

The versatility and range of acrylic sheet available can make it an ideal option for use in creating decoration and furniture for your home. This will make it necessary to know how to permanently bend the plastic so that it can be effective.

Step 1 – Design

The first step required in order to bend an acrylic sheet is to create a design so that you are fully aware of the dimensions required. If you are planning on creating a piece of furniture, consider the area where you intend to put it and the manner in which it will be used. This will allow you to make a note of the measurements that will help to make it as convenient as possible.   

Step 2 – Gather Equipment

It is possible to hire the equipment needed to manipulate an acrylic sheet to create your design so that they do not have to be purchased. You will need a strip heater to melt the plastic enough to bend it and a bending fixture to hold it in place while it cools. Anything more than a basic design will also require the use of a hacksaw and an engraving machine will be needed if you want to add any decorative accents.

The design you created will also provide knowledge of the dimensions required so that you obtain acrylic sheets of the correct size. The sheets are available in different thicknesses so you should choose the correct one in accordance with the intended use. Ensure that the strip heater is able to accommodate the thickness of the acrylic.

Step 3 – Prepare Acrylic

Be aware that simply bending the acrylic sheet will create a rounded edge. If you want to create a sharp edge, you must initially saw a V-shaped groove along the outside edge of the line to be bent. Lightly score a cut along the line to be sawed as a guide using a straightedge so that it is easier to work with the saw. Some acrylic sheets have a protective film layer stuck to the surface, these should be peeled away before working with them.  

Step 4 – Apply Heat

The strip heater should come with instructions to confirm the optimum temperature at which acrylic can be bent according to the thickness. In addition, the heater may take a few minutes to reach this temperature so you allow it enough time to reach this stage. An acrylic sheet of ¼ inch thick will require about 8 minutes of being heated at 300 degrees F to enable it to melt enough to bend. If necessary, use a scrap piece of acrylic to practice with. Position the sheet over the heating element, directly over the line where you intend to bend it. Hold it in place for the number of minutes necessary to bend it.   

Step 5 – Bend and Secure

After removing the acrylic from the strip heater, bend it in accordance with your desired shape. In the case of a sharp-edged design, remember to bend it with the cut edge on the outside. Once it is at the required angle, use a bending fixture to hold it in place and leave it in a cool dry area for several minutes to allow it to cool. Once the acrylic has cooled and firmed, the fixture can be removed.