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This article tries to clarify the concept of retraction in 3D printing as it's a very important parameter to achieve quality prints, without material depositions on the exterior face of the model, or threads between pieces that are printed at the same time.
Retraction is the recoil movement of the filament necessary to prevent dripping of material during movements and displacements that the vacuum extruder performs during 3D printing.
The parameters that configure the retraction are:
With the appropriate adjustment of the above parameters you get the ideal retraction for your 3D printer.
Unfortunately there is no formula to find the exact value, but each 3D printer and each extruder needs a particular value. The following table contains recommended values of length and retraction speed for the 3D printer depending on the type of extruder used, which are a good starting point to adjust them to your particular case:
The values of the table are entered in the retraction section of the lamination software that is used, in our case, Cura 3D, is within the category of material.
Care must be taken when varying the length parameter, because if it is increased too much (20 mm in a direct extruder), it will cause a discontinuous flow and thus gaps in the piece being printed.
Once all the parameters that configure the retraction are understood and based on the values that we have provided, each user will obtain their ideal configuration by simply making small adjustments.
Tambien interviene temperatura, a menor temperatura filamento menos fluido por lo tanto menos hilillos
Tengo una ender 3 max. Y estoy utilizando el pla plus de esun y tengo un lío con las retracciones. Me daca hilo. Si alguien me puede ayudar para que esto no me pase estiy buscando la configuración perfecta. Gracias de antemano
Hola me gustaría saber si la pre configuración de cura por las maquinas es ideal ó es una estándar y se debe modificar según las datos que nos ofreces que trae cura.Es posible que actualicen esta información con la ultima versión de cura.
Hola, miller. La preconfiguración de las máquinas siempre es un estándar, puesto que los parámetros varían mucho en función del material empleado, temperatura ambiente, y otros factores. Lo ideal es modificarlos hasta encontrar los valores óptimos.
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