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Moai Peel Action,

To help model separate from the PDMS layer, Moai tilts the vat on the right side of the print after each layer finishes to peel the object off the silicone. During this process, the build plate also moves slightly to counter the peel force. This tilting action helps with better print results, but sometimes the peel force can distort or damage the print object.

To modify peel force, one can make it peel slower by lowering PM Motor Speed and Z Motor Speed or reduce the distance of tilt by reducing PM Reset Position. The definition of those settings as well as other settings can be found in the system setting page.

There is no hard and fast rule for setting these. As long as Z Motor Speed is less than 30% of PM Motor Speed, the tilt action is fine. It is also best to have PM Reset Position greater than or equal to Z Follow values.

The default values are PM Motor Speed 60 Z Motor Speed 15 PM Reset Position 100 Z Follow 100


Z Motor Speed

This deals with how fast the Z-Axis is moving. The default value is 15. There is little reason to change this value as it does not affect print quality.


PM Motor Speed

This has to do with how fast the vat is tilting at layer change. The faster PM Motor speed is, the stronger the force is applied to separating layers. Earlier Moais have a default value of 80 while newer Moais have a value of 60. 80 would work, but 60 should give nicer layer lines.


PM Reset Position

This value defines how much the vat tilts. The higher the value, the longer distance the vat will move to separate the layers. The default is 100, and you can lower it to reduce separation force and increase overall print speed. It is not a frequently adjusted value.


Z Follows

This is another value that deals with layer separation. When the vat tilts during layer change, the build plate lowers slightly to help reduce separation force on each layer. The default value is 100 which translate to 1mm movement and works well. You could experiment it in conjunction with PM Reset Position.

moai-tilt-peel.txt · Last modified: 2017/11/28 10:25 by peopoly