3D Printer Fumes What You Need to Know

Nov 15, 2024 | Chhavi Malik

3D Printer Fumes: Everything You Need to Know

Technology for 3D printing has been increasingly adopted recently. So, offices, research facilities, retail stores, and households use 3D printers. A common concern among people and organizations purchasing 3D printers for personal use is their security and health-related issues. In particular, using 3D printers in non-ventilated environments might raise safety and health concerns due to interactions with diverse materials, prolonged printer use, and other factors.

The comforting aroma of melting plastic indicates that your 3D printer is actively working. However, you may have questioned:

How dangerous are those 3D printer fumes?
Should my office staff work in the same room as my 3D printers?
Should I leave it running late in my bedroom?
What exactly is that smell?

According to research, all 3D printers release different emissions when operating. Others have been connected to health hazards, while some release innocuous odors from heated materials. The fine particles and volatile organic compounds (VOCs) emanating from your printer—and by printer, we include both resin-based and filament-based 3D printers—are of special concern. Ultrafine particulate matter can accumulate in your lungs when inhaled, leading to respiratory conditions, including asthma.

According to studies, a functioning 3D printer generates styrene, volatile organic compounds(VOCs), and ultrafine particles (UPs). UPs and VOCs are the sweet-smelling gases you notice during PLA 3D printing. The widely used ABS filament emits UPs, styrene, and VOC-rich gases. A combination of compounds with a high vapor pressure at room temperature is known as a volatile organic compound (VOC).

The pleasant scent of fresh paint, the aroma that results from melting ABS, and the sweet smell of PLA filament are all the results of VOCs being released into the atmosphere. VOCs do not provide a life-threatening risk, but prolonged exposure to them can have serious adverse effects.

Let's have a closer look at the common plastic filaments and the fumes they release.

1. ABS Filament Fumes

ABS Filament Fumes

The 3D printing filament Acrylonitrile-Butadiene-Styrene (ABS) is frequently used by both amateurs and experts. Due to its great temperature resistance, it is superior in terms of strength and rigidity and makes an ideal material for practical applications. The fact that ABS filaments produce Styrene, a potentially toxic and carcinogenic VOC when they melt, is one of their main drawbacks. Long-term ABS fume exposure is also linked to headaches, lethargy, and nausea.

2. PLA Filament Fumes

PLA Filament Fumes

One of the most often used 3D printing materials for home 3D printers is polylactic acid (PLA). The main ingredients are corn starch, glucose, and maize. Because these components are made from basic renewable materials, PLA is a somewhat sustainable 3D printing material. PLA filament releases lactide into the atmosphere when it is melted. But because it's a non-toxic substance, it's generally okay to be around.

3. PETG Fumes

One of the widely-used filaments for 3D printing is polyethylene terephthalate glycol (PETG). It creates a single material that combines the simplicity of printing with the robust chemical and mechanical resistance of PLA and ABS. Recent research on PETG 3D printing found that PETG releases the hazardous and carcinogenic compounds ethylbenzene and styrene. This study does not allow us to identify the intensity and production of VOCs and UFPs; nevertheless, it advises caution when exposed to PETG vapors for an extended period.

4. Nylon Fumes

In industrial 3D printing, nylon is generally used as a material. Compared to ABS filament, it provides greater wear & tear resistance and high durability. Despite this, it also releases toxic gases, most of which are made up of caprolactam. Even though the EPA did not classify caprolactam as a drug that causes cancer, prolonged contact with it can irritate eyes and noses and create respiratory problems.

The 2016 study also discovered that 3D printing nylon had the greatest VOC emission rate, at 180 g/min.

5. Resin 3D printing Fumes

Resin 3D printing uses a light source, usually an LCD screen or a laser, to cure the resin instead of melting any materials. Most resin 3D printers have a securely sealed enclosure because the process is infamous for its unpleasant smell. Even air filtration devices are included in some of the top resin printers.

How to Avoid Inhaling 3D Printer Fumes

1. Ventilation

Ventilation

Ventilation! The simplest method to avoid this problem is to place your printer in an area with cross-ventilation. To avoid being trapped in a room filled with fumes from 3D printing, choose a place like your garage or tool room to set up your printing space.

If you don't have a garage or any outdoor location where you can relocate your printing setup, do not be concerned. To make sure that the air in your workspace is less hazardous and more ventilated, you can easily adopt one of the following techniques:

2. Install Air Cleaners

Using an air purifier is the simplest technique to handle air toxicity. Get an air purifier for your printer room if you don't have access to a large open area. Look for purifiers with charcoal or HEPA filters. Choose an air purifier that is made for the size of the space because they come in various sizes.

3. Purchase and Install Air Extractors

Air Extractors

If purchasing an air purifier is out of your price range, air extractors are the next best thing. A fan and vacuum pipes are used in air extractors to pull in cooler air and pull out warm air. They do an excellent job of ventilating a small area. Twin adjustable air extractors with controllers and bidirectional airflow extruders without thermostats are the two common variations.

4. Create an Outdoor Structure

It's also a good idea to set up an enclosed patio for your 3D printer if you want to take matters into your own hands. To set this up, you'll need a fan, a dry duct that opens beyond your house, and carbon filters to make an airtight enclosure. The hose will act as an air intake and outflow while the filters will remove any particulate matter.

Are 3D Printer Fumes Harmful?

The type of filament you use in your printer will determine how hazardous the fumes are. While some substances may not emit any harmful vapors at all, others may be highly hazardous when inhaled. Unless you're using ABS (acrylonitrile butadiene styrene), which releases styrene gas when heated to high temperatures, the fumes from a plastic-based printer are often not harmful. According to the International Agency for Research on Cancer, styrene is carcinogenic (IARC).

More serious health dangers than merely fumes may be present when it comes to printers that employ resin as their base material. Because resin contains substances like acrolein and acetone, known carcinogens, it can emit poisonous vapors and should not be directly inhaled. Employees should ideally avoid using resin printers unless there are safeguards in place to protect people from exposure.

Other Dangers of 3D Printer Fumes Include:

1. 3D printer fumes can contain hazardous materials, such as volatile organic compounds (VOCs), that can be dangerous for humans to inhale. VOCs are released when heated plastic or other materials are used in the 3D printing process. These chemicals can have long-term health effects and can cause a variety of respiratory issues, skin irritation, headaches, fatigue, and more serious illnesses like cancer.

2. The use of certain plastics like ABS or polycarbonate will release more dangerous toxins than others during the printing process that could contribute to eye, throat and nose irritations as well as dizziness and nausea if inhaled over an extended period of time.

3. Exposure to high levels of 3D printer fumes can also cause damage to the nervous system and disrupt endocrine functions. These effects have been seen in people who work with 3D printers for long periods of time, such as those in a professional 3D printing lab environment or in factories.

4. The combination of high temperatures and chemical fumes released during the 3D printing process can be a serious fire hazard if not managed properly. Since many 3D printers are operated remotely, it’s easy for them to become overheated and catch fire without anyone noticing until it’s too late.

5. Fumes from 3D printers can also contain heavy metals like lead, mercury, and chromium which could be dangerous if inhaled over an extended period of time. These metals can damage the lungs and other organs, leading to short-term and long-term health problems.

6. Unvented 3D printers tend to trap dangerous fumes inside the printer itself, raising the risk for workers who are operating or maintaining the device. It’s important that any 3D printer used in a professional environment be properly ventilated so that fumes don’t accumulate indoors.

7. Poorly maintained 3D printers may also release particles into the air that can cause serious breathing problems if inhaled over an extended period of time. To prevent this from happening, it’s important to keep all parts of your 3D printer clean and free from dust or debris.

8. The use of certain types of materials can also be dangerous when used in 3D printing as they may release toxic fumes or particles into the air. These include materials like ABS, PETG, and nylon which should only be used with proper ventilation systems to minimize exposure.

9. 3D printers that are operated for long periods of time can generate a lot of heat and consequently, a lot of fumes. This is especially true for large-scale industrial 3D printers that need to run all day long to produce parts or prototypes at scale. In these cases, it’s important to ensure that the printer is equipped with an efficient ventilation system to reduce the amount of fumes released inside the enclosed space.

Best 3D Printing Software

If you would like to create 3D models, you need to have 3D printing software. There are many 3D modeling software available, but we recommend using SelfCAD. SelfCAD is a 3D printing software that helps you create designs from scratch, or edit existing designs. It has an intuitive interface that makes it easy to get started, even if you've never used 3D printing software before.

With SelfCAD, you can create complex shapes and designs with multiple colors and materials. SelfCAD also offers a wide range of advanced features for more experienced users like image to 3D for converting images to 3D models, a powerful 3D rendering software that you can use to generate realistic renders of your models as well as freehand drawing and sketching tools.

There is also an in-built slicer that you can use to prepare your models for 3D printing by generating the g-code that you can send to your 3D printer. The 3D slicer also supports most of the commonly available FDM 3D printers. The video below shows how you can slice your designs in SelfCAD and prepare them for 3D printing.

Conclusion

3D printer fumes can be dangerous if you don't take the proper precautions. When using a 3D printer, it's important to ventilate the area and use a respirator or mask. Some filaments are safer to print with than others, and you should always choose nontoxic filaments if possible. If you're concerned about your health while printing, consider investing in an air purifier specifically designed to remove VOCs from the air.

Enjoy powerful modeling, rendering, and 3D printing tools without the steep learning curve.

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