Supports can make or break a successful FDM print. We’ve compiled five essential tips to ensure smooth removal and a clean surface finish, including using a Z-hop and adjusting the support interface density. Read the tips to improve your print quality!
Optimize the Interface Layer Density: The interface layer is the surface where the support meets your actual print. Set the density to about 70-100% with 3 or 4 layers. This creates a solid “cap” on the supports, leading to a much smoother surface finish on the printed part and easier removal.
Adjust the Z-Axis Separation (Z-Hop): This is the single most critical setting. Increase the air gap between the support and the part (the Z-separation) to 0.2mm for a 0.4mm nozzle. A slightly larger gap allows the support to break away cleanly without leaving permanent scars on your model.
Choose the Right Pattern: Standard Grid or Lines supports are fast but can be difficult to remove. For complex organic shapes, use Tree Supports. They minimize contact points, save material, and are significantly faster and easier to peel off.
Increase Support Flow Rate: Set the flow rate for the support material to 105-110%. This ensures the support structure is robust and adheres firmly to the build plate, preventing it from collapsing halfway through the print, especially for tall models.
Use Support Blockers (If Available): For complex models, use the “Support Blocker” tool in your slicer to intentionally prevent supports from generating in areas that don’t need them (like simple bridges or areas that won’t show). This saves filament and cuts down on post-processing time significantly.