Resin Print detaches from supports

Last Updated: September 4th, 2021

This is for prints that detach from the supports - for prints that do not stick to the build plate at all, check this resource.

If your print keeps detaching from the supports and ending up on the FEP, the vast majority of time this can be solved by making a few simple changes. Beyond the common suggestions of releveling the bed and adjusting the FEP, here are a few things for you to do:

  • Raise your exposure time
  • Lower your lift speed
  • Reinforce the supports

Raise your exposure

Especially on non-monochrome printers, the exposure can be increased to allow the resin to properly bond with the supports. For example, a resin that you would normally print at 1.5 seconds can be increased to 2 seconds. This would improve the bond at the expense of some detail due to overexposure.

You can find resin print settings for most printers here, and you can help grow the resource by joining our discord and verifying settings. As a warning, setting the exposure exceptionally high can leave indentions in the FEP - an example of this is using a 10 second exposure on a monochrome printer.

Lower your lift speed

This, along with the exposure, are the easiest changes in your attempt to resolve the issue. A high lift speed will increase the acceleration of the motor, thus increasing the force on the bond between the resin and build plate. Reduce the lift speed to a baseline such as 60 mm/min (1 mm/sec), then after successful prints you can optimize to a higher speed.

Reinforce the supports

Supports that are inadequate in density or thickness will allow the print detach. This is may be simple in sentence but in practice it can take time to determine what an optimal level of support entails.

Lights supports, especially on larger objects, provide very little surface area for bonding. However, on small delicate prints, using only light supports may prove sufficient.

Light supports example

For larger parts such as this, it is best to start with a strong base. This can be done by using medium supports at all initial area of contact, including islands. Heavies can be used to provide the best reinforcement, but do note that they will result in divots on the print.

Correct initial supports

Generously spread medium supports around the part, attempting to place them adjacent to each other so they can be braced in the next step. Lights can also be used for this purpose.

Correct  mid-step supports

Finally, assigning parents to supports reduces the amount of resin used, and adding braces between the support pillars mitigates flexing during printing. Looking back at the auto-supports function used on the first image, we can tell that beefing up the support density and thickness will prove to be more reliable.

Correct supports with parents and bracings

To compare resin printers, browse resin, and get equipment inspiration visit our Ultimate Resin Guide.

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Application & Safety FAQ answers common questions about resin.

Ventilation Simulations has animations for common DIY venting setups, and Heating Resin Printers during winter provides data for specific heat sources.

Our Resin Print Settings Table has associated images, mixes, and does a resin giveaway.

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