Resin printing, just like FDM 3D printing, requires the model to stay in position during printing for the print to succeed. Even if your print starts stuck to the print plate, it’s still possible for the print to come unstuck later. Generally, forces in the resin vat itself are the causes of these issues.
Tips to Prevent Your Prints from Detaching Mid-Print
Each layer you print needs to stick to the previous layer and come off the bottom of the vat. This applies a peeling force, as the layer is detaching from the bottom of the vat. Obviously, the more material that needs to be peeled at once, the more force is applied to do so.
Unfortunately, this also increases the likelihood that something goes wrong. To help minimize the peel force, make sure that you’re not printing large solid structures and instead hollow them out.
When hollowing your prints, you need to make sure that you don’t end up cupping a large amount of resin. Not only does this add back the force you were trying to reduce, but it also results in a large amount of wasted resin, which can get expensive quickly.
In some cases, you may be able to eliminate cups simply by rotating the print. However, if this doesn’t work, you will need to add drainage holes to let the hollows drain.
When it’s printing overhangs if your print starts to come unstuck, try adding supports, or increasing the contact area of the supports, as this can help compensate for increased peel forces. If you’re increasing the support contact area, a change of just a few fractions of a millimeter can make a big difference.
Any vibrations in the build platform can cause layers to become misaligned and potentially cause delamination issues. Regularly checking that your build platform is firmly secured can help you avoid this issue.
Following these troubleshooting steps should resolve most issues where a print comes off the print plate. If you’ve got any other tips for dealing with this issue, feel free to share them down below.