Plexiglass can be processed in many ways. Basic machining techniques include cutting Plexiglass. 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 Plexiglass. Below you will find detailed information about cutting Plexiglass, as well as how to cut Plexiglass.
Easy to work with: Plexiglass
Plexiglass 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 Plexiglass is simple and can be compared with the processing of wood.
Consider the properties of acrylic glass
However, there are unique plastic properties that you must take into account. If you use saws that are too high, 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 Plexiglass, several techniques are considered:
- Circular saw, unrestrained teeth
- Jigsaw, unrestrained teeth
- The band saw (usually only entangled teeth available)
- A crack or a cutter knife
Possible preparations before cutting Plexiglass
If you want to cut square shapes of Plexiglass, 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 Plexiglass
- Water or air for cooling
- circular saw
- band saw
- Cutter knife (Stanley knife), preferably with a 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 Plexiglass, you should clamp it as firmly as possible. Under no circumstances may the Plexiglass flutter during laser cutting. The protective film, which adheres to ex-works on Plexiglass products, only remove your cutting work after completion.
2. Cut the Plexiglass 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 Plexiglass 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 Plexiglass 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 the medium feed. Bear in mind that Plexiglass is not cut, but scraped by cutting.
3. Cut the Plexiglass with a band saw
You only need to cut a band saw (probably the least one) to a Plexiglass if you want to cut around and curved shapes out of the Plexiglass. The number of teeth should be at least 3 to 7 per centimeter – depending on the way 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 Plexiglass on 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. Plexiglass 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 four cutting passages for a 4 mm thick Plexiglass. You can also scrape and break Plexiglass, but. Then you can straighten the cut edge with a scraper blade.
5. Cut the Plexiglass with the circular saw
When cutting Plexiglass 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 Plexiglass.