Rough marvin

[xabi1988]

Hi everyone.

I’m trying to print marvin,as same as all here, and I have a little problem, putting attention on my last marvin we can see the lines of the printer prints. I don’t know how can I do to remove them. Do you think that this marvin pass the hubs manager examn? my configuration is:

PLA

layer 0.1

extruder temp 195

bed temp 65

fill 20%

speed 30mm/s

thanks to everybody

[3DFlying]

It looks like you have Z wobble. It is usually caused by bent leadscrews or threaded rods.

[xabi1988]

maybe you have reason. because I see that the threaded rod is little bent, but I don’t realize that this should be the problem. I will change it and comment about. Thanks you very much

[wirlybird]

Please do let us know how it works out!

[Nebbian]

Definitely Z wobble.

Is the top of your Z leadscrew constrained? If so then it can cause the issue. For best results the top of the leadscrew shouldn’t be attached to anything, it should be free to flop around wherever it likes, so that the nut only locates the position of your bed in the Z direction (not in the X or Y direction).

[xabi1988]

I changed the threaded rods yesterday but it happends the same, I was reading now that one person made bigger the upper piece hole from M8 to M10, and because of this the threaded rod rotate free (now maybe this hole is too small and the consecuence is that the threaded roads bent). Moreover I was thinking about other 3d printer and I have seen that the threaded rods didn’t have any holding.

I’m going to make bigger that holes and I will upload some photos to see them.

Thanks

[xabi1988]

I made bigger the holes but It continue happening.so i changed one threaded rod that i Saw was bent and much better.on tuesday i Will probe making the holes bigger because i thought It is crashing because the noise It does

[xabi1988]

finally the problem was the threated rods, I cut the support and now they can move as they want.

see photos

thanks

Xabi