Hello everybody.
I am new on the forum so I want to introduce myself ...
I am a computer expert with a passion for electronics and technology. I have been interested in 3d printing for about 2 years.
My first printer was a Tronxy x5sa that, for a good start, arrived with the motherboard line driver broken ...
So 2 minutes after I finished mounting the printer, I started a printer upgrade with no object yet printed !!!
I'm not going to dwell on the upgrade, because by now the Tronxy has finished its days and has a devastated plate (too much adhesion of the PLA +) ...
For the Tronxy I created a "box" with a rudimentary filtering system that you see below:
3D Printer Box
I then decided to try to build a CoreXY with these features: 400x400x500, Duet3d wi-fi, 800W heating plate, 24v power supply (2000W max), Nema 23 motors, double Z motor with ball screws, BondTech extruder and hotend Mosquito Magnum Slice Engeenering. The movements in X and Y are mounted on rail mgn12h. All the hardware part is isolated from the electronic and power part. Signals and power are transmitted via a sort of bus built with aeronautical connectors (high currents). Duet directly controls only the extruder motor (the only Nema17). The other motors are controlled by external drivers (DM542 if I remember correctly ...). The plate is controlled by a solid state relay and I inserted a temperature probe under the plate connected to a thermostatic relay which in turn triggers a bistable relay, cutting off the current in case of too high temperatures.
The only printed part of the printer is the X axis carriage. Let me explain ... I have no problem against printed parts !!! But before reaching this result I changed a lot of configurations, especially due to the weight of the plate which is not the classic "thin plate". I can't use other plastic parts because I had destroyed the Tronxy ... 8-)
But now... I have a BIG problem:
This would be a cube...
In X the carriage is completely inaccurate.
I have disassembled the belt 5 times: without belt the carriage glides very well, both in X and in Y.
I redesigned and modified the belt return systems at least 3 times, making sure there was no friction.
I reassembled the belts ... and the problems start: whatever the tension of the belt, with the gear free to move on the crankshaft (anchor screws removed), I can feel the carriage jerking along the X axis. Once all the print has been reassembled, it slides in positive X to each single layer.
Is there anyone that can help me ? Any suggestion ???
I attach other photos of this "Frankestein" ...
Frank1
Frank2
Frank3
Frank4
Frank5
Frank6
Frank7
Frank8
Frank9
Frank10
Frank11
PS: I have some doubts about Duet3d's expansion card control on external drivers ... Has anyone had any kind of similar problem with a comparable configuration?
Thanks in advance to all.
Hello everybody (an sorry for my English... It's not perfect...)
I am new on the forum so I want to introduce myself ...
I am a computer expert with a passion for electronics and technology. I have been interested in 3d printing for about 2 years.
My first printer was a Tronxy x5sa that, for a good start, arrived with the motherboard line driver broken ...
So 2 minutes after I finished mounting the printer, I started a printer upgrade with no object yet printed !!!
I'm not going to dwell on the upgrade, because by now the Tronxy has finished its days and has a devastated plate (too much adhesion of the PLA +) ...
For the Tronxy I created a "box" with a rudimentary filtering system that you see below:
3D Printer Box
I then decided to try to build a CoreXY with these features: 400x400x500, Duet3d wi-fi, 800W heating plate, 24v power supply (2000W max), Nema 23 motors, double Z motor with ball screws, BondTech extruder and hotend Mosquito Magnum Slice Engeenering. The movements in X and Y are mounted on rail mgn12h. All the hardware part is isolated from the electronic and power part. Signals and power are transmitted via a sort of bus built with aeronautical connectors (high currents). Duet directly controls only the extruder motor (the only Nema17). The other motors are controlled by external drivers (DM542 if I remember correctly ...). The plate is controlled by a solid state relay and I inserted a temperature probe under the plate connected to a thermostatic relay which in turn triggers a bistable relay, cutting off the current in case of too high temperatures.
The only printed part of the printer is the X axis carriage. Let me explain ... I have no problem against printed parts !!! But before reaching this result I changed a lot of configurations, especially due to the weight of the plate which is not the classic "thin plate". I can't use other plastic parts because I had destroyed the Tronxy ... 8-)
But now... I have a BIG problem:
This would be a cube...
In X the carriage is completely inaccurate.
I have disassembled the belt 5 times: without belt the carriage glides very well, both in X and in Y.
I redesigned and modified the belt return systems at least 3 times, making sure there was no friction.
I reassembled the belts ... and the problems start: whatever the tension of the belt, with the gear free to move on the crankshaft (anchor screws removed), I can feel the carriage jerking along the X axis. Once all the print has been reassembled, it slides in positive X to each single layer.
Is there anyone that can help me ? Any suggestion ???
I attach other photos of this "Frankestein" ...
Frank1
Frank2
Frank3
Frank4
Frank5
Frank6
Frank7
Frank8
Frank9
Frank10
Frank11
PS: I have some doubts about Duet3d's expansion card control on external drivers ... Has anyone had any kind of similar problem with a comparable configuration?
Thanks in advance to all.
Hello everybody (an sorry for my English... It's not perfect...)
