At the base of the model, the print bends upwards until it’s no longer level with the print platform. This can also result in horizontal cracks in upper parts. Warping is a common 3D printing problem, which happens when the first layers of heated plastic are cooling down too rapidly and begun to contract. This causes the edges of the model to bend upwards.
- Use a heated print bed to keep the plastic at a temperature just below the point where it gets solid. This is called the “glass transition temperature”. This way, the first layer will stay flat on the print bed.
- Adhesion of the first layer has to be increased to the print bed by spreading a small amount of glue evenly on the layer/bed.
- See to that a proper calibration has been done for to level the print bed.
- Adding a rafts or pads may be considered to increase the adhesion platform.
- Another option is to tweak the cooling fan, so it doesn’t get switched on until after a certain number of layers have been printed, or adjust the percentage so it’s not operating at full power.