I keep seeing problems and if no one has been able to get the printer to work as advertised then I am not going to bother to continue.
I will, however, write a review for several industry newspapers.
If Makertech 3D is willing to provide video showing the steps along with more detailed, my review will not be so critical.
Hello everyone,
finally got my -first- printer assembled... started some time ago but due to missing tools and other projects didn't find the time too complete the printer until now... :/
Let me also share some of my prints. I'm quite happy with the results and didn't got that much troubles as some other users.
I really enjoyed building the printer and learned a lot about 3D printers in general as this is my first encounter with the 3D printing world. Got stuck sometimes due to eg not having the appropriate tools or some cables that were too short. I struggled the most with the guides from the bed and the gantry...
The first prints showed some clear z-wobble. See the first cube.
After some research and reading through the forum (thanks everyone!) I assumed it was the wobble from the lead screw which was transferred to the gantry.
After tighten the gantry I reduced the wobble but the movements where not smooth anymore. But this confirmed the theory. See cube nr 2.
Then I ordered the aluminum coupler @Makertech mentioned (https://www.makertech3d.com/apps/help-center#hc-z-wobble-wavy-lines-in-the-z-axis) and this improved the result clearly. See cube nr 3.
Next steps are waiting for the replacements with longer cables to tidy everything up and starting experimenting with dual extrusion.
Thanks again to everyone wo took the effort to document their experiences in the forum, I learned a lot from you.
Bye!
bob
Last print seemed to be significantly better than the others, but printer still needs a lot of work. I don't trust it to print anything taller.
That would seem to make sense. I notice that the stepper shaft is pressed into the motor and then "unloads" as it tries to move the gantry up. This issue seems to have gotten more pronounced as when I added the coupler and the bearing mechanism at the top it wasn't an issue but then it came back.
Why is this an issue on this printer when I have another printer with the same lead screw and coupler setup just pushing a gantry up to extrusion pillars?
I'm still struggling with the assembly and i'm afraid its not my incompetence.
I have a massive wobble on the z-axis in the z-direction that i can't seem to fix. I've ordered a metal coupling, because the plastic one provided streches and compresses a lot. This stretching and compressing is largely due to how tight I made the guides of the gantry grip the vertical support. However if i loosen them a little bit i get a wobble in the x-y plane everytime the z-axis moves.
I'm afraid i won't be able to a simple print anytime soon...