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General stuff / Re: Printing with PLA
« on: June 03, 2019, 04:55:26 am »
An interesting thing to remember.
PLA will wear out metal parts.
I have printed a lot of parts on my printer, changed the print head\extruder out to a Bowden style system,, but other than that change I have been running with the same parts, so that is only 1 new hot-end and 1 new nozzle. I modified my extruder to accept the Bowden setup so I have been using the same hob all along.
So the other day I used the NEW Basic Premium filament from Amazon and my printer would not work with it, I had an older partial spool and put it back on and it worked fine, back to tha Amazon premium and no good,,
I started replacing some of the parts I was planning on but in a less planned out method than what I wanted, I was looking for the reason my printer did not like the new filament. I now have a new hot-end and cooling fan for the hot-end, not to be confused with the parts cooling fan, a new sheath that goes between the extruder and the hot-end, a new nozzle, a new heat element and a new thermistor,, all this and still no joy.
Now you can see why I mentioned the hob,, yep that was the problem mostly. The new filament is about 0.178 to 0.174 and the older stuff was 0.175 to 0.173,, the slightly larger diameter filament makes for a slightly higher friction in the sheath, and a slightly higher pressure making it slightly harder to push the filament through the nozzle and my hob was worn really bad,, smooth in a few spots even.
PLA will wear out metal parts.
I have printed a lot of parts on my printer, changed the print head\extruder out to a Bowden style system,, but other than that change I have been running with the same parts, so that is only 1 new hot-end and 1 new nozzle. I modified my extruder to accept the Bowden setup so I have been using the same hob all along.
So the other day I used the NEW Basic Premium filament from Amazon and my printer would not work with it, I had an older partial spool and put it back on and it worked fine, back to tha Amazon premium and no good,,
I started replacing some of the parts I was planning on but in a less planned out method than what I wanted, I was looking for the reason my printer did not like the new filament. I now have a new hot-end and cooling fan for the hot-end, not to be confused with the parts cooling fan, a new sheath that goes between the extruder and the hot-end, a new nozzle, a new heat element and a new thermistor,, all this and still no joy.
Now you can see why I mentioned the hob,, yep that was the problem mostly. The new filament is about 0.178 to 0.174 and the older stuff was 0.175 to 0.173,, the slightly larger diameter filament makes for a slightly higher friction in the sheath, and a slightly higher pressure making it slightly harder to push the filament through the nozzle and my hob was worn really bad,, smooth in a few spots even.
