You start a perfect print, but hours later, you may notice corners lifting from the build plate or large parts gradually pulling upward during printing. Parts will detach from the bed, causing misalignment in subsequent printing in severe cases. This is one of the ASA issues that users may encounter – warping.
Unlike PLA filament, ASA will shrink during the cooling process, and the stress will pull the print right off the build plate if there is uneven cooling. It is sensitive to temperature fluctuations—much like ABS filament, but manageable.
The Reason for ASA Warping
1.Poor bed adhesion
2.Insufficient bed temperature
3.Uneven cooling
4.No enclosure for large or flat prints
Warping issue usually not caused by the ASA material itself, but by the unstable ambient temperature during printing.
How to Fix ASA Warping
1.Improve Bed Adhesion
Make sure the PEI sheet (smooth or textured) is clean and no oil, then apply a layer of PVP solid glue or ASA-specific glue. Printing after it dry, the adhesion will be improved significantly.
2.Increase Bed Temperature
ASA is typically suitable for a printing bed temperature range of 90–110°C. A higher temperature bed keeps the first layers flexible for a longer period of time, ensuring a secure bond before generating stress on the upper layer.
3.Reduce Cooling
Set the part cooling fan lower or turn it off completely for the first layers.
4.Use Enclosed Printer
Enclosure is one of the most effective ways to prevent ASA warping. It keeps the ambient temperature stable. Even a manually added enclosure can make a noticeable difference.
More Tips about Preventing ASA Warping
📍 Adding a brim (5-10mm) to make the stress on the brim more even and less likely to warp. The subtle adjustment can often solve problems that cannot be solved by settings alone.
For a deeper understanding of ASA material features, printing requirements, and how it compares with ABS and PETG, refer to our complete ASA filament guide
