Cut plexiglass


Plexiglas can be processed in many ways. Basic machining techniques include cutting Plexiglas. On the one hand you have to pay attention to the peculiarities of PMMA plastics (acrylic or acrylic glass), on the other hand you can also use different tools and machines for cutting Plexiglas. Below you will find detailed information about cutting Plexiglas, as well as how to cut Plexiglas.

Easy to work with: Plexiglas

Plexiglas has so many advantages that it is used in many ways not only in industry and craftsmanship. Even do-it-yourselfers appreciate the thermoplastic material. Especially the vitreous properties are there, which make use of do-it-yourselfers again and again. Because it offers real advantages over glass: the processing of Plexiglas is clearly simple and can be compared with the processing of wood.

Consider the properties of acrylic glass

However, there are the special plastic properties that you must take into account. If you use saws with too high speed, the plexiglass melts, resulting in surface tensions and, as a result, numerous small cracks. Depending on the selected cutting method, you must therefore pay attention to the special features. For cutting Plexiglas several techniques are considered:

  • Circular saw, unrestrained teeth
  • Jigsaw, unrestrained teeth
  • Band saw (usually only entangled teeth available)
  • Crack or cutter knife

Possible preparations before cutting Plexiglas

If you want to cut square shapes made of Plexiglas, you should drill in the corners. This minimizes the risk of sawing beyond the area to be cut. Always use new saw blades or saw blades that only cut acrylic glass.

Step-by-step instructions for cutting Plexiglas

  • Water or air for cooling
  • jigsaw
  • circular saw
  • band saw
  • jigsaw
  • Cutter knife (Stanley knife), preferably with hook blade
  • Screw clamps with protection (against scratching)
  • possibly wooden wedges and plates for better fixing
  • Pen (water-soluble) for marking
  • Measuring Tools
  • when cutting with a knife, a metal or wooden staff for exact application

1. Preparatory work

After you mark the Plexiglas, you should clamp it as firmly as possible. Under no circumstances may the Plexiglas flutter during later cutting. The protective film, which adheres ex works on Plexiglas products, only remove your cutting work after completion.

2. Cut the Plexiglas with a jigsaw

The saw blade should be as finely toothed as possible, the individual teeth must not be crossed. Set a pendulum stroke speed between 1,000 and a maximum of 2,000 on the saw. With a material thickness of up to 4 mm, set the pendulum function to 1, with stronger Plexiglas workpieces to 2. At the latest from this material thickness you should cool the interface with air or water.

Turn on the jigsaw before touching the Plexiglas with the saw blade. The saw shoe must be pressed firmly onto the workpiece, the feed rate must be adapted to the stroke speed. If the feed is adjustable, then at medium feed. Bear in mind that Plexiglas is not actually cut, but scraped by cutting.

3. Cut the Plexiglas with a band saw

You only need to cut a band saw (probably the least one) to a Plexiglas, if you want to cut round and curved shapes out of the Plexiglas. The number of teeth should be at least 3 to 7 per centimeter - depending on the shape of the desired cut. Bear in mind that the saw blades are not without entanglement.

This in turn means that the later Sägekante is a little rough. You need to rework it by polishing or sanding the Plexiglas on the edge. The speed of the band saw should be set at 1,000 to 3,000 m / min.

4. Cut the Plexiglas with a scoring or craft knife

This method is suitable for round and curved cuts if you do not have a band saw. Plexiglas should be cut with a knife to a maximum thickness of 4 mm. You will deepen the cut in several passes.

As a rule of thumb, each cut 1 mm. This means 4 cutting passages for a 4 mm thick Plexiglas. You can also scrape and break Plexiglas but also. Then you can straighten the broken edge with a scraper blade.

5. Cut the Plexiglas with the circular saw

When cutting Plexiglas with the circular saw, the saw blade should again be fine-toothed and the teeth should not be crossed. Set a low speed. Work with the guide rail. The circular saw must already run before you touch the Plexiglas.

Tips & Tricks

Plexiglas is often used by DIYers instead of glass. It is not only easier to machine than the brittle glass. What many people do not know: the translucency and transparency (of clear plexiglas, of course) is around 92 percent. By contrast, in glass, light transmission is only 82 percent.

Where is the difference between Plexiglas and acrylic glass? Follow the link and you will find detailed information.


Video Board: DIY How to Easily Cut Plexiglass