Detached from Supports
Detached from Supports
A part is partially or completely detached from its supports during printing.
How to Identify
Detached from supports can be diagnosed as follows:
- Check the build after printing.
- Verify that no parts fell off supports.
- Look at parts where they meet the supports and look for areas that are not connected.
- Part geometry did not resolve properly
Cause - Inconclusive
Cause - Inconclusive
Cause - Under-supported
Solution - Print Preparation or Part Design
Troubleshooting
It is recommended that you review all the possible solutions before taking action to ensure you are pursuing the best course of action.
If the best course of action is not apparent, try the troubleshooting options in the order listed. Refer here for more tips.
Print Preparation or Part Design Adjustments
The following solutions will address print or part-related causes of the defects. Choose among the suggested actions below and select the best approach for your application. Usually only one type of adjustment is needed.
If problems persist, please reach out to Carbon Support.
Explanation & Causes
Suction forces pulling down on the part are stronger than the provided supports can handle.
Reference DLS Printer Dynamics for more information on suction forces.
- M1 and M2 printers generally require more supports than M3 and M3 Max printers because they do not have force feedback (FFB) capabilities to respond to suction forces.
- L1 printers fall in the middle because they use FFB but have larger suction forces in general due to large platforms.
Causes
Print Preparation or Part Design
How the part is oriented, supported, or designed is causing the defect.
Root Issue | Problem | Why Defect Presents |
|---|---|---|
Orientation | Large cross sections later in the print | Suction forces increase later in the print from large cross sections and the supports are not strong enough to overcome the force increase. |
Orientation | Asymmetrically oriented part | Suction forces can cause torque on asymmetrically orientated parts, rotating them off their supports if under-supported. |
Supports | Under-supported | The part simply does not have enough supports to withstand suction forces. This is more common with fence supports than bar supports. |
Supports | Supports generated for a different resin | Supports are resin specific, with default parameters designed for the selected resin. If the user opts to keep supports after changing the resin, the supports may no longer be strong enough to hold onto the part. |
Supports | Support tip/neck parameters too small | Support parameters are editable in Carbon software. If the supports tips or neck diameter (for bar supports) are decreased from default, supports may no longer be strong enough to hold onto the part. |
Unvented volume | | A vacuum in an unvented cavity exacerbates suction forces. |
Print Plan Adjustments
Print Plan Adjustments adjust the print plan to optimize mid to high volume production and/or address part defects.
In doing so, adjustment may both prevent or cause defects. Below are adjustments that can cause this defect.
Printing Stage | Parameter Type | Type of Adjustment | Why Defect Presents |
|---|---|---|---|
1 Pump Up | Pump Height | Decrease | A shorter pump height can make it more difficult for the part to break free of the dead zone surface tension. If this happens, supports may not connect properly to the part. |
1 Pump Up | Platform Speed | Increase | Increased Motor Up Speed increases suction forces |