Defining the travels - BCN3D Stratos


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Learn more about this parameter:

Combing mode

Avoid printed parts when moving

Start the layers with the same parts

Z Hop

Combing mode

combing mode

The combing mode options modify the way the head moves between the printed areas of the part. Depending on the option you choose, you can obtain the following results:


All: The head will move over the part, which can cause longer trips but reduces the need for retractions. 

No Skin: The head will avoid rolling over the top and bottom layers where possible. Only when the fill is printed will the head be able to move over the part.

Off: This option will prevent, whenever possible, the head from moving over the printed parts of the model.   



Print mode  
Dual Extrusion

To avoid contamination of colors or materials in the first and last layers, use the unlined option. 


TPU Reducing the number of retractions with TPU is necessary to ensure a good print result. Use the "All" option to reduce the number of retractions.


Avoid printed parts when travels

avoid printed parts when travelling

configuring to avoid printed parts when travelling

By activating this option, the print head will avoid the printed parts when moving. When the shortest path between two points in the print cannot be reached, the head will move around the part.  


By preventing the nozzle from coming into contact with parts that have been already printed, the possibility of having surface defects or mixing of materials if reduced. 

Note: To use this setting, the combing mode must first be activated.


Start the layers with the same part

start layer with same part

Each layer starts printing near the same point where the previous layer started printing. This way the material has enough time to cool down, which is really useful for printing overhangs and small parts, however this can increase the printing time. 


Z Hop

z-hop when retracted

By activating the Z-jumping surface will go down each time a retraction is made, in this way when the print head will be separated from the part while it is moving. 

z-hop comparison

Height of Z Hop: it is the distance that the nozzle will separate from the piece.

Z Hop after the purge tower: When this option is activated, a jump will be made between the purge tower and the part. In this way, materials remains are avoided on the outside of the piece.

Z Hop on layer change: the jump is made when the head moves to make the next layer. The possibility of damage to the printer layer is reduced. 

Z Hop after extruder change: a jump will be made when there is an extruder change. In this way the remaining material will remain on the part.  

Height of the Z Hop after extruder change


The Z-Hop complements the retractions to reduce or eliminate the remains of material that may remain between the piece and the nozzle. To learn more about retractions settings, visit the following article: BCN3D Stratos: Retractions


Forum community

Do you need more advice? Check out our forum community.


It is important to keep your printer in good condition to get the most out of it. In this chart, you will find a list of maintenance procedures and the frequency with which they should be performed. 


Maintenance plan (BCN3D Sigma)

Maintenance plan (BCN3D Sigmax)

Maintenance plan (Epsilon series)

Maintenance plan (Sigma series)


bcn3d-recycleTake your e-waste to a certified recycler. Check how we do it at BCN3D



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