How To Drill Holes In Plexiglass Without Cracking?

Polycarbonate (plexiglass thermoplastics) is a better alternative to glass since it is lighter and more shatterproof.

As plexiglass, or acrylic, may be used for a variety of things in your house, such as windows and safe enclosures, you may need to make a hole or two in it when you use it for these reasons.

Unfortunately, since they scratch readily, their crystal clarity may be jeopardised. When handling plexiglass, caution must be taken since it may be fragile and even break if it is pressured.

After reading this article, you should be able to effectively drill holes through your plexiglass without it breaking. If you have addressed any safety concerns, you should be able to proceed with the job without delay.


Select the right tool

Regular drill bits for metal and wood will break the edges and shatter the plexiglass during drilling, but there are special drill bits developed specifically for plexiglass, and you should use one of them instead of the standard drill bits.

If you can’t find any, you may also use a standard drill with plexiglass drill bits that runs at a speed between 500 and 100 RPM and has a speed range of 500 to 100 RPM. Pliglass drill bits include geometric structures that are distinct from regular drill bits, which allows them to penetrate through acrylic with relative ease.

To do this project, you’ll need a piece of wood, permanent markers or grease oil, masking tape, and spray lubricant, among other supplies. You can create a flawless drill hole through plexiglass with these instruments.

Safety first!

When drilling, you should always wear safety gloves, and you should be well-versed in the instruments you are using before attempting anything complicated with them.

Safety goggles should be worn when drilling since the acrylic chips will fly everywhere. This will protect you from any potential health risks. A face mask is also an excellent option.

Plan your drill

While it may be OK to just mark your areas and proceed with the drilling procedure after you’ve taken care of your safety, plexiglasses need further preparation.

A piece of wood is required, and the plexiglass should be positioned on top of it. This may be done using a spare piece of wood that you don’t mind drilling through, as long as the wood is strong enough to keep the plexiglass in place and not move while you work.

Because plexiglass is acrylic and may chip if drilled near the edge, it is important to keep the hole in the middle of the piece while making your project plans.

In order to avoid chipping and to designate where you want to drill, you may use a marker or grease oil to mark the areas where you want to drill and lay masking tapes over these defined areas.

Make the drill

It’s time to crank up the wattage on your machine! Turn the drill on by either plugging it in or inserting a charged battery. In order to drill through plexiglass, you don’t have to penetrate the material, but rather begin by piercing the designated locations. You may strive for a speed of 3.5 inches per minute if you don’t press too hard.

Once the pilot hole has been drilled, it is recommended to gradually increase in diameter by shifting to a larger drill bit until you arrive to the desired diameter.

Even if you’re drilling through a very thick plexiglass sheet, you’ll still see a lot of shavings surrounding the hole from the heat generated by the friction. In order to get a better perspective of the work, it’s helpful to periodically remove plastic shavings from the hole you’re working in.

After taking a little pause, spray lubrication should be used in order to keep your drill bit moist and to protect the acrylic from cracking, chipping, and even melting throughout the process.

Allow the plexiglass to cool and clean itself when you finish drilling, and you’ll have a great result.

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