When I have bought my Malyan M150 the idea was simple. I want a cheep machine to enter the world of 3D printing technology, a device that can be extended to gain better functionality. Before I made a decision I have taken into account that there should come time dive deeper to make a better device from the base model. The calculation was, 300eur for the device itself, 300eur for modifications like enclosure, all metal hot end, drylin or high quality linear bearings and some assorted modes like Z axis stiffness mod and sturdier build platform. That all with the goal to have a device with higher capabilities then a 600eur store bought device and much more knowledge in this particular field.
After four months I have had my fun with it, it works fine. At the day when I registered on the forum I had my first small disaster. A wire from the extruder motor fell out of the terminal mid print and the motor was producing ticking noises a few days back. My reasoning at the time was that it had not good contact for some time. When the wire problem was amended I started it for a second to test and found out the electronic is not working anymore, so the driver, right? No. I disassembled the electronics box, tested the wiring again, tested the motor on another axis, searched for another electronics board, swore to myself that it will have independent drivers, then found out that Marlin disables the E motor when temperature under 170degC. After putting everything together, everything worked, but the ticking sound from the extruder still remained. Then I disassembled the extruder and the hot end, found the disfigured lower part of the ptfe tube inside cone-shaped part of the nozzle. After cleaning everything, drilling the ptfe tube to 2mm, inverting it's direction I have put everything together, and now it works better then when it was new.
I still have the many unresolved problems, when I have tried to change the bearings because of the noise and play I found out that the shafts are 7.92mm (probably 5/16") and that the new INA bearing has almost the same amount of play. There is some texturing on the sides of the high thin walled objects, so I assume a slight bend on one of the z axles. I have not yet tinkered with the firmware, so there is still factory disabled Extruder min temp which does not allow me to leave it unattended and the printed dimensions are slightly out of sync which should also be resolved with firmware tinkering. So, the simple question is is it all worth it, should I try to make something better from it or rather use it as is and build a new one?
On the matter of the new build I do like the Ultimaker solution very much, it can be silent and fast at the same time, which are the two main things that this printer may never be.
What would I expect of the printer, to be less prone to vibration, to be more silent, to be able to use higher temperature materials like HIPS, PET-G, Delrin, to be extendable to dual extruder when the time comes, not to brake the bank.
After four months I have had my fun with it, it works fine. At the day when I registered on the forum I had my first small disaster. A wire from the extruder motor fell out of the terminal mid print and the motor was producing ticking noises a few days back. My reasoning at the time was that it had not good contact for some time. When the wire problem was amended I started it for a second to test and found out the electronic is not working anymore, so the driver, right? No. I disassembled the electronics box, tested the wiring again, tested the motor on another axis, searched for another electronics board, swore to myself that it will have independent drivers, then found out that Marlin disables the E motor when temperature under 170degC. After putting everything together, everything worked, but the ticking sound from the extruder still remained. Then I disassembled the extruder and the hot end, found the disfigured lower part of the ptfe tube inside cone-shaped part of the nozzle. After cleaning everything, drilling the ptfe tube to 2mm, inverting it's direction I have put everything together, and now it works better then when it was new.
I still have the many unresolved problems, when I have tried to change the bearings because of the noise and play I found out that the shafts are 7.92mm (probably 5/16") and that the new INA bearing has almost the same amount of play. There is some texturing on the sides of the high thin walled objects, so I assume a slight bend on one of the z axles. I have not yet tinkered with the firmware, so there is still factory disabled Extruder min temp which does not allow me to leave it unattended and the printed dimensions are slightly out of sync which should also be resolved with firmware tinkering. So, the simple question is is it all worth it, should I try to make something better from it or rather use it as is and build a new one?
On the matter of the new build I do like the Ultimaker solution very much, it can be silent and fast at the same time, which are the two main things that this printer may never be.
What would I expect of the printer, to be less prone to vibration, to be more silent, to be able to use higher temperature materials like HIPS, PET-G, Delrin, to be extendable to dual extruder when the time comes, not to brake the bank.
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