ABS can be frustrating to print. A part may look fine at first, only for its corners to lift or its shape to warp as the print progresses. If you’re using an open-frame 3D printer, it’s natural to wonder whether an enclosure is the missing piece. The answer depends on your printer, the model, and your printing conditions. An enclosure can help reduce drafts and temperature fluctuations, but it isn’t always essential.
We tested iSANMATE ABS HF on both an open-frame Bambu Lab A1 and an enclosed Bambu Lab H2D. The A1 also printed a simple model at up to 500 mm/s under our test conditions. These results show what’s possible with different setups—and why printer capability and model complexity matter just as much as the presence of an enclosure.
Why Does an ABS Filament Enclosure Help?
ABS shrinks as it cools. When different areas of a part cool unevenly, internal stress can build up, causing corners to lift, parts to warp, or layers to crack.
An enclosure helps reduce drafts and changes in the surrounding air temperature. This can make printing more consistent, particularly with large parts, broad flat surfaces, and models that are prone to warping.
However, an enclosure doesn’t automatically fix every problem. Bed adhesion, nozzle temperature, cooling, filament condition, and print geometry still matter.
Open-Frame vs. Enclosed ABS Printing
Printing ABS on an Open-Frame Printer
In our testing, we printed a relatively simple model on the open-frame Bambu Lab A1 at up to 500 mm/s. ABS HF can also be printed on an A2L when the printer’s capabilities and the chosen settings support the target speed.
There are a few things to keep in mind:
- Start with a suitable model. Simple models are a sensible starting point for high-speed printing. Complex geometry, large flat surfaces, and parts with thin features may need more tuning.
- Check your printer’s capabilities. A 500 mm/s setting in the slicer doesn’t guarantee that the printer can maintain that speed throughout a print. Acceleration, hotend capacity, and model geometry all affect actual performance.
- Keep the build plate clean. Good first-layer adhesion helps reduce the chance of corners lifting.
- Avoid direct drafts. Airflow from windows, fans, or air-conditioning vents can affect cooling.
- Use appropriate cooling. For iSANMATE ABS HF, the recommended part-cooling fan range is 0–30%. Adjust within that range according to the model and print quality.
Our 500 mm/s result applies to the model and conditions tested. It shouldn’t be taken as a guarantee for every model or every open-frame printer.
Printing ABS in an Enclosed Printer
An enclosed printer provides better protection from drafts and helps maintain a more stable printing environment.
This can be useful for larger parts, complex models, or prints that repeatedly suffer from warping on an open-frame machine. An enclosure may also make it easier to maintain consistent results when room conditions change.
We also tested iSANMATE ABS HF on an enclosed Bambu Lab H2D at speeds of up to 500 mm/s under the conditions used for that evaluation.
The result shows that high-speed printing is possible with this material on the tested setup. It doesn’t mean an enclosure alone enables 500 mm/s, or that an enclosed printer will always outperform an open-frame one.
Which Setup Should You Choose?
| Factor | Open-frame printer | Enclosed printer |
| Simple models | Can work well under suitable conditions | Can work well |
| High-speed printing | Depends on printer capability and model complexit | Depends on printer capability and model complexity |
| Large or warp-prone parts | May require more tuning | Often easier to manage |
| Protection from drafts | Limited | Better |
| Airborne emissions | Ventilation is still important | Filtration or exhaust may be needed |
If you’re printing simple models and your printer can handle the required speed, an open-frame setup is worth trying. If you regularly print large parts or struggle with warping, an enclosure may be a better choice.
How to Reduce Common ABS Printing Problems
Before changing several slicer settings at once, identify the problem and adjust one variable at a time.
Warping and Lifting Corners
Check the build plate, first-layer adhesion, and room airflow first. Large flat surfaces are often more challenging because uneven cooling can build up stress across the part.
We recommend 80–100°C bed temperature for iSANMATE ABS HF filament. If warping continues, check your other settings and consider using an enclosure to reduce drafts and temperature fluctuations.
Poor Layer Adhesion
Weak bonding between layers can result from unsuitable nozzle temperatures, excessive cooling, or insufficient melting capacity at high print speeds.
Check nozzle temperature and fan settings. If you’re printing fast, make sure the hotend can supply enough molten material to maintain consistent extrusion.
See our High-Speed ABS Printing Guide for more detailed setup advice.
Stringing or Inconsistent Extrusion
Moisture and unsuitable printing settings can both affect extrusion quality. If the filament may have absorbed moisture, dry it according to the manufacturer’s recommendations before making major changes to retraction or temperature.
For iSANMATE ABS HF, drying 60–70°C for 5–8 hours is recommended. For nozzle temperatures and other starting settings, see our High-Speed ABS Temperature Guide.
Does Low-Odor ABS Mean You Don’t Need Ventilation?
A lower odor can make printing more comfortable, but smell alone cannot tell you whether the air is safe to breathe.
iSANMATE ABS HF has a relatively low odor. However, ABS printing can release volatile organic compounds (VOCs), including styrene, as well as airborne particles. Emissions vary with the filament formulation and printing conditions.
How Does the Bambu Lab H2D Filter System Help?
The Bambu Lab H2D features a built-in filtration system with a G3 pre-filter, an H12 HEPA filter, and a coconut-shell activated carbon filter. The HEPA filter helps capture airborne particles, while activated carbon can reduce certain odors and gaseous pollutants.
Filtration performance depends on operating conditions and filter maintenance. The system should not be assumed to remove all emissions from ABS printing.
Even when using a lower-odor filament such as iSANMATE ABS HF, print in a suitably ventilated area. Where practical, use appropriate local exhaust ventilation, and follow the printer manufacturer’s recommendations for filter maintenance and replacement.
Do You Need an Enclosure for iSANMATE ABS HF?
Not necessarily. Our testing shows that iSANMATE ABS HF can be printed on both open-frame and enclosed machines under suitable conditions, including high-speed printing of a simple model on the open-frame Bambu Lab A1.
If you’re using an Bambu Lab A1 or A2L, check the printer’s actual capabilities and start with a model suited to your setup. An enclosed printer is worth considering if you frequently print larger parts, encounter recurring warping, or need better control over drafts.
Whichever setup you choose, remember that print quality and indoor air quality are separate considerations. A print that looks good doesn’t necessarily mean emissions are adequately controlled.
For more information on the material and its recommended settings, read our High-Speed ABS Filament Guide.
