Should You Print Directly On the Build Plate?

In the world of resin 3D printing, there is an ongoing debate about whether it is better to print directly on the build plate or use supports. This topic recently sparked a lively discussion in our Facebook group and subreddit, with members sharing their experiences, preferences, and concerns. In this article, we will delve into the different perspectives presented in the conversation and explore the pros and cons of printing directly on the build plate. 

▲ Sometimes people need to print stuff directly on the build plate for various reason. Credit.

The Importance of Model Orientation:

    One key point is that, the ideal orientation for printing a model is not always the one allowed by printing flat on the bed. Depending on the complexity and geometry of the model, it may be more efficient to use supports to achieve the desired outcome. This is particularly true when dealing with intricate designs or models with overhangs.

▲ Proper orientation and good supports can print full plate of models without problem. Credit.

Challenges and Potential Issues:

    There are cases where printing directly on the build plate makes sense. However, there are several challenges associated with this approach. Firstly, removing the print from the build plate can be difficult, especially if there are no supports to aid in the process. Secondly, support optimization becomes limited or even impossible when printing flat on the bed. Lastly, there is a risk of potential damage to the build plate or the print itself during removal if not doing it carefully.

Alternative Approaches:

    Based on the experiences with alternative approaches shared by the members of the group, some people finds it just easier to print with the model being oriented and supported, while others stopped printing directly on the build plate due to calibration challenges and potential failures, avoid spending time on adjusting compensation settings for burn-in layers when printing large, flat objects.

▲ You might encounter layer compression or deformation when the plate is not levelled properly. Credit.

The Preference for Printing Directly on the Build Plate:

    On the other hand, there are members who expressed a preference for printing directly on the build plate. Factors such as proper levelling, and designing models with built-in supports are what you want to look into to. When done correctly, printing directly on the build plate can yield excellent results.

Considering Specific Use Cases:

    Several members emphasized the importance of considering the specific item being printed. The potential issue of "elephant's foot" caused by overexposure of bottom layers, which can be a concern when printing certain types of models. While some people prints the models flat on the plate, designing them hollow with specific features for ease of removal and drainage. Dental models are also seems tend to be able to printing on the build plate without any issue. These examples highlight the importance of tailoring the approach to the specific requirements of the print.

▲ Still, printing models on support will sometimes gives you benefit such as being able to print in batch. 

It all depends:

    There are also people criticising the tendency to repeat information without considering the specific circumstances and challenges associated with each print. It's crucial to evaluate the pros and cons of different approaches and determine what works best for each individual case.

Conclusion:

    The conversation in our Facebook group revealed a diverse range of opinions and experiences regarding printing directly on the build plate in resin 3D printing. While some individuals prefer this approach due to factors like magnetic plates and proper levelling, others find it challenging due to difficulties in removing prints and lack of support optimization. Ultimately, the decision to print directly on the build plate or use supports depends on various factors, including the complexity of the model, desired outcomes, and personal preferences. Case by case evaluation and experimentation are key to finding the best approach for each specific print job.

Link to the thread on our Facebook group: https://www.facebook.com/groups/Phrozen3DPENG/posts/2562637187234766/

Link to the post on our subreddit: https://www.reddit.com/r/Phrozen/comments/185thaz/why_is_not_recommended_to_print_directly_on_the/