hello everyone, ever since ive really built my mendel90 ive been getting these weird rings on all my prints, its more noticeable on higher layer heights but all i had to hand was my yoda as i've been unable to print anything properly for over a week due to crappy quality plastic (avoid 3d karma). as you can see on some of the images theres like rungs every set distance i assumed it was every turn on the lead screw or something along those lines so i did the following: making sure the lead screws have enough oil dismantled the z axis gave a full strip clean and rebuilt and did a total recalibration (improved things but didnt resolve) changed oil if this is just a common thing and i should just lump it is there anyway of trying to minimise its effect? any help is well appreciated also as a side note ive noticed that when my print starts doing the usual movements in nophead initial code, sometimes when the x axis moves the z axis motors rotate slowly with them, i thought this was some sort of interference or crosstalk, not sure if this is anything to do with this but hay ho ill get everything fix at some point. https://reprap.org/forum/read.php?292,216632,216632#msg-216632 Wed, 14 Oct 2026 00:21:56 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?292,216632,216860#msg-216860 https://reprap.org/forum/read.php?292,216632,216860#msg-216860 reprapmagazine.com]
The article you need starts on page 29.

richgain]]> richgain Mendel90 Sun, 09 Jun 2013 15:54:22 -0400 https://reprap.org/forum/read.php?292,216632,216632#msg-216632 https://reprap.org/forum/read.php?292,216632,216632#msg-216632
ever since ive really built my mendel90 ive been getting these weird rings on all my prints, its more noticeable on higher layer heights but all i had to hand was my yoda as i've been unable to print anything properly for over a week due to crappy quality plastic (avoid 3d karma).

as you can see on some of the images theres like rungs every set distance i assumed it was every turn on the lead screw or something along those lines so i did the following:

making sure the lead screws have enough oil
dismantled the z axis gave a full strip clean and rebuilt and did a total recalibration (improved things but didnt resolve)
changed oil

if this is just a common thing and i should just lump it is there anyway of trying to minimise its effect?

any help is well appreciated

also as a side note ive noticed that when my print starts doing the usual movements in nophead initial code, sometimes when the x axis moves the z axis motors rotate slowly with them, i thought this was some sort of interference or crosstalk, not sure if this is anything to do with this but hay ho ill get everything fix at some point.]]> qwert75 Mendel90 Sat, 08 Jun 2013 20:00:20 -0400