- Thread starter
- #31
Artur5
Printer Master
- Joined
- Jan 24, 2011
- Messages
- 1,299
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- Printer Model
- MB5150,Pro10s,i3Mk3s+,Voron2.4
In case you bothered to read my initial woes with the Prusa, i3Mk3S+ ( see the thread 'Cat toys' in the subforum '3D printed project showcase' ) you can skip the rest of this post. In case you bothered to read it, probably you'll prefer to skip it as well.
Good news :
-Kit arrived. -Kit assembled. -First self tests OK.
-Bad news : -Z axis calibration (last self test ) failed
The machine didn't refuse to print but no way to get anything right.
Filament wasn't layered smoothly into the hot bed but 'dropped' by the nozzle at some height above the hotbed. Results: it wouldn't stick at all but it was miserably dragged along the hotbed hanging from the tip of nozzle.
Technical advice from Prusa wasn't of much help. They insisted that I needed to adjust properly the height of the proximity sensor. I did it, but that wouldn't correct the problem, no matter how high or low I relocated the proximity sensor.
-My uneducated opinion is that the 'root of evil' was the failed Z-axis calibration during the self tests. Thus, the proximity sensor couldn't work as intended.
Option 1 : return the machine to the manufacturer and let them do the job properly.
Prusa told me that I'd have to wait at one month or more for having the repair done. As this seemed a rather long wait I decided to try again for myself. ( option 2 ):
Option 2 : Total disassembling of the printer and rebuild again from scratch.
So I started to do, but an accident happened : one 3D printed part was cracked in the process. It's one of the parts holding together the rods of the X-axis. Once you stuck that component into the rod, it's no't easy to remove it unharmed (specially if it's made of plastic with 0% infill). It could be glued with cyanocrilate but this is a critical part that needs to be perfect and solid. The slightest misadjustment would compromise the rigidity and accuracy of the X-axis. No way I could be confident in a glued part. Therefore I ordered a new one. They come in sets of two (one for each side). The parcel has been shipped alreay but I expect that, with Easter in the way, it will take one week or more to arrive. Patience is the word.
In the meantime, I reassembled the parts that doesn't need that cracked piece. Now let's await the arrival of the slow truck from Bohemia.
Good news :
-Kit arrived. -Kit assembled. -First self tests OK.
-Bad news : -Z axis calibration (last self test ) failed
The machine didn't refuse to print but no way to get anything right.
Filament wasn't layered smoothly into the hot bed but 'dropped' by the nozzle at some height above the hotbed. Results: it wouldn't stick at all but it was miserably dragged along the hotbed hanging from the tip of nozzle.
Technical advice from Prusa wasn't of much help. They insisted that I needed to adjust properly the height of the proximity sensor. I did it, but that wouldn't correct the problem, no matter how high or low I relocated the proximity sensor.
-My uneducated opinion is that the 'root of evil' was the failed Z-axis calibration during the self tests. Thus, the proximity sensor couldn't work as intended.
Option 1 : return the machine to the manufacturer and let them do the job properly.
Prusa told me that I'd have to wait at one month or more for having the repair done. As this seemed a rather long wait I decided to try again for myself. ( option 2 ):
Option 2 : Total disassembling of the printer and rebuild again from scratch.
So I started to do, but an accident happened : one 3D printed part was cracked in the process. It's one of the parts holding together the rods of the X-axis. Once you stuck that component into the rod, it's no't easy to remove it unharmed (specially if it's made of plastic with 0% infill). It could be glued with cyanocrilate but this is a critical part that needs to be perfect and solid. The slightest misadjustment would compromise the rigidity and accuracy of the X-axis. No way I could be confident in a glued part. Therefore I ordered a new one. They come in sets of two (one for each side). The parcel has been shipped alreay but I expect that, with Easter in the way, it will take one week or more to arrive. Patience is the word.
In the meantime, I reassembled the parts that doesn't need that cracked piece. Now let's await the arrival of the slow truck from Bohemia.