In FDM 3D printing, one of the most common problems that users face is the bending and cracking on the models while printing. Printed parts with such deformations can still be used.
During the printing process, filament material has to be cooled after it leaves the nozzle. If the cooling time for the filament is too short or too long there can be deformations in the printed part such as bending or cracking.
The cooling time depends on the ambient temperature. If the ambient temperature is unstable it’s likely that there’ll be deformations such as tilts and cracks. If the ambient is too cool the outside of the part will be cooler than the inside, therefore the outer surface will cool off and shrink faster. Shrinking is usually seen at the bottom of the model.
In this instance, cracking can happen as the higher layers of the model are printed. If the wall thickness of the printed part is too low it’s more likely to see cracking on the part. The tension in the higher layers also can lead to cracking.
Bu deformasyonlar modelin kalitesini düşürecek ve malzeme maliyetine neden olacaktır. Sabit ortam sıcaklığı sayesinde malzeme homojen şekilde soğuyacak ve yazma işlemi sırasında sabit devam edecektir. Sabit ortam sıcaklığı sayesinde eğilme ve çatlama deformasyonları ortadan kalkmış olacaktır.
These deformations will lower the quality of the printed model and cause additional material costs. A stable ambient temperature makes it possible for the material to cool down more evenly for a more stable print. Keeping the temperature stable and homogeneous inside the building chamber prevents deformations.
In FFF 3D printing the ideal ambient temperature is between 40-60°C.