wave / ripple after upgrading to new arms and injection molded cheapskates

[itsjesseyo]

I have an old first gen Orion and I upgraded to the new arms and the new injection molded cheapskates to fix some problems occurring from wear and tear. Now I have a new problem. Basically, when traveling in a particular direction on the top and bottom layers this ripple forms. when traveling 90 degrees these ripples do not form. I watched it a few minutes ago and the Y tower (motion is towards and away from this tower when it ripples) is making a rattling noise at some points but visually it does not appear to be wobbling - yet those ripples form right before my eyes.

I figured I'd post here with pictures and post the results for everyone's benefit. If anyone has some time-saving tips that be greatly appreciated. Otherwise, I'm going to start by attacking that rattling injection molded part.

[geneb]

For the bottom it may be that the filament isn't sticking in those areas. In the top it looks like too few top layers. Try 5.

g.

[itsjesseyo]

that's appreciated but I think the problem is weirder than that. any layers traveling perpendicular are perfect - too much adhesion even. in fact, going the direction where the ripple happens its great adhesion. plus the pattern is very consistent and seems to scale with the size of the triangle. it also doesnt happen on small prints that are places over that area of ripple. small prints come out perfect.

i think it's the rattling of that Y tower, like some sort of vibration as that y carriage moves quickly over large distances. going to pursue that. Appreciate the feedback!

[rootboy]

Try slowing down your print to about 1/3 to 1/2 of normal speed and see if the problem goes away. This is just a suggestion towards finding the problem, and not a long-term solution.

Are all of your arms the same length? A difference here could create stresses that might be causing the cheapskates to bind.

Where is it getting that underlying hexagon pattern? From your STL?

[geneb]

Check to make sure that there's no "bumping" on any of the carriages. Some of them got out the door with out of spec delrin bearing covers.

g.