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I need to return the module for repair. Please tell me what this process is. The filament sensor is intermittently detecting the presents of filament when there isn't any. As a result, when loading filament, the Da Vinci goes from quick load the slow like it normally does at the end of the load process just prior to the filament coming out of the nozzle. This ultimately causes the printer to return the following message, "Check Filament out from nozzle" when the filament is only half way down the Bowden tube.
Bruce, Your repair fixed the load problem as the load and unloads since receiving the unit have performed properly. The Sock around the hot end still sages a bit, but tying a small silicone rubber band around it fixes the problem.
Thanks for your input on PETG printing. It's improved my results.
Response from 3D by BD LLC | May 11, 2020
Thank you for your feedback. I am sorry you are having trouble with the hot end cartridge, and I will message you directly with info on returning the cartridge for immediate repair.
The filament sensor is the trickiest part of this device. To work properly all the pieces have to be in exactly the right position, and that is harder to achieve with the precision of the parts I can produce than one might think. It is the one facet of my design that I feel could really use an overhaul.
Luckily, for myself and many of my customers the filament sensor is not a big concern. When loading filament I almost always manually push the filament all the way to the hot end; thus, negating the need for the printer to load filament at the faster rate to get it through the Bowden tube. As many daVinci Pro users have discovered, then filament sensor on the PCB has no effect during printing operations. So, it is only used during filament loading operations.
Even so, I strive to make sure the sensor works on every cartridge. So, I will arrange for you to mail the cartridge back to me so I can fix the sensor for you.
Again, thank you for your feedback, and I will do my best to remedy this situation to your satisfaction.