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219.00 American hard earned dollars for a large format 3d printer. Hell Yeah Boys

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I never understand my motive. I always buy things cause they are cheep but when I get started using them I get mad because I buy junk, I would say china junk , but right nowadays most 3d printers are coming from there.

We have a never break policy to buy only American, did I mention this costs 2 hundred bucks, I'm a sucker. Policy well I guess I'm a hypocrite,  I'm so glad china doesn't make General Aviation Planes or helicopters cause I'd surely be in the ground.

Somewhere in this forum we are building a hight temp 3d printer and it required a large print that exceeded the ender 5 we have and are using as our production machine so welcome to the Team Longer.

Screenshot 2020 10 23 at 8.05.11 PM

 

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 hitting a wall right now, ran some cheep filament then all hell broke lose

I replaced the tubing from the extruder to the head and now this is where I'm at

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My focus is on this feeder tube. I have seen this problem on another machine and it never got rectified

The build-up of plastic is kinda general maintenance

 

Inside the hot end metal receiver tha

t the tube inserts into there was a melted piece of the old tube. I used a #22 drill bit to get this cleaned out. 

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great time to measure and record the depth of the tube going into the metal receiver  1.070

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 this illustrates the mark made from the inserting of the tube, notice the mark made is before the depth the tube should have been inserted, this is the size of the piece that was broken off inside. the block dot is where the tube should have been inserted into

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 preheat when you assemble so it gets threaded in all the way

 

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Back in business

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FAILURE!!   no temp at the nozzle. Got a good look inside the longer power supply and main board case. 

running the cura app and watching the mainboard the extruder light illuminated saying the heat the element signal was present,  First troubleshooting step was to replace the heating element.  Yes  getting a rise in temp now to test print

The filament tube into the hot end needed to be removed for the changing of the heater. After reassembly, the test print was started. During the run I could hear the filament extruder bumping, what ir was doing was pushing the filament into the heated nozzle then the filament would skip back because the pressure being applied. Viewing the layed down plastic I could see it was to flat. What i didn't do was level the bed thinking it would be the same, I cranked down on the bed until i could see the nice bead and wallah the extruder stopped bucking. 

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Replaced the heat element with one I had ordered a while back as a spare. It's listed at 70 w so should last longer than the original. I have never had one of these to fail, maybe it's the brand Longer uses. Not worth the hassle trying to get a replacement

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Making parts

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 Never leveled the bed so I'll hope for the best, this is the last printed part for the MPCNC Primo build

 

 

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