1. What’s the Issue with My 3D Print?
Have you noticed that after finishing the 3D printing process, a bubble-like formation frequently appears at the top of your model? This irregularity may indicate a model failure or missing layers, which can sometimes detract from the overall look of the printed piece. In this article, we will discuss the reasons behind this bubbling problem and how to fix it.
2. What Leads to the Bubble Problem?
Although this issue might first seem comparable to a missing layer, it is generally caused by two primary factors: an incorrect resin profile and the properties of the resin /environmental conditions.
Incorrect resin profile
Inadequate normal layer exposure time
Too fast lifting speed
Insufficient rest time or light-off delay
Resin properties and temperature
Thick/viscous resin
Low ambient temperatures can lead to an increase in resin viscosity and a decrease in its reactivity.
3. Addressing the Bubble Problem
To fix the bubble issue on the model, you may need to tweak various settings, switch or modify your resin, and apply post-processing techniques for a complete resolution. The following steps are organised by their likelihood of effectively identifying and resolving the printing problem.
Adjusting the resin profile settings
Please refer to the Resin Profile to ensure your resin settings are properly configured.
Increase the standard layer exposure time by 10%.
Reduce the lifting speed to 40 mm/min.
Extend the rest time.
Modify the light-off delay time based on the recommendations from this Calculator.
Examining resin characteristics and managing resin
Shake the resin bottle for 30 seconds to 1 minute prior to pouring it into the resin vat.
Pre-heating the resin can be beneficial.
Opt for resins with lower viscosity when possible.
Employ post-processing methods
By sanding the model after it has cured.
Then, manually fill the hole with resin and cure it using a UV light source.
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