How to install the Shims (BCN3D Sigma)

Install the shims to correct the Z offset between both nozzle tips






Shims are elements that mechanically correct the Z offset when printing in Mirror or Duplication mode. However, is not necessary to install them to print, you can get more information about the shims in this article: BCN3D Shims.

To install the shims follow these steps:

During the Printer Calibration process or before printing a job in Duplication or Mirror mode, the BCN3D Sigma may suggest you to install shims to correct the Z offset
between nozzle tips.
Once you confirm you want to install the shims, remember de number of shims to install on which hotend and then follow the screen instructions:


Wait until the printer cools down to avoid any dangerous manipulation. Once it has cooled down, turn off the printer.

Unscrew the 2 bolts at the specified hotend and install as many shims as previously indicated on the screen. screw-iconx2 M3x8mm

2-hotend-shimsOnce the shims are installed, Screw the bolts, turn on the machine and follow the instructions on the screen.



Shims are not included with the printer.

You can get a pack of 10 shims in our online shop: BCN3D Shims.


Forum community 


Need more tips? Check out our forum community for troubleshooting help.


It's important to keep your printer in good shape to make the most out of it. In this chart, you can find a list of the extruder maintenance procedures and how frequently these should be done. Maintenance Plan


bcn3d-recycle  Take your e-waste to a certified recycler. Check how we do it in BCN3D.



replace hotend eng


clean hotend eng


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