Vertical waves, causes and solution please?

Just finished a 5 hour print and noticed vertical “waves” right along length and from top to bottom.
X1 Carbon with Obsidian 0.4nozzle.
Used BL PLA-CF at 225 c nozzle and 60 c bed. Normal speed nothing speeded up or slowed down. Dried filament at 60 for 4 hours, HL was 20%.
I’ve run this print many times and not seen this.
Took 2 pictures showing issue but cannot find how to upload.
Any ideas please. Thanks in advance.
I’ve uploaded (I think!!) the 3mf file if of any use



2x V3,65mmsolid,195x65x7.5mm,TE shaft,diff supports.3mf (1.9 MB)

You can simply drag the photo’s into this window or use the upload button. Copy/Paste also works to add photo’s

Could you please also upload the .3mf file used for this print?

At first glance, it would be recommended to clean the nozzle and perform a few cold pulls to ensure there is no partial clog.

Next, it is also recommended to clean the carbon rods and re-tension the belts, then performing a full calibration to ensure everything is right. The vertical lines might be caused by the motion system needing maintenance.

I’ve uploaded the file inside the body of the OP. Thanks for your help.