It gets smaller the higher it gets

Hey all…

after hours of alignment of my plate i got my first print out of the K8400.
I tried a lego-stone(Thingiverse: http://www.thingiverse.com/thing:39343). but as you can see on the picture it not looks like a lego-stone.
https://www.dropbox.com/sh/w3of15n65rkw784/AABqSO1NENhvsApVWJ-2spgFa?dl=0

is it a problem with my slicer??
is it a problem with the rods??
im trying to get this 3d printer working because i realy want to start printing but yeah as you can see there are not so good results.

Thank you for your help =)

Greetings from Switzerland

looks like you’ve got your belts too tight or the XY rods are not parallel - either way you’ve got some layer shifting at the start. Not sure what’s happening to give you that reduced layer size as the print continues - have you tried halting the print, turning off the motors and feeling how much resistance there is on the head movement?

The too tight belts could be one of the problems. the resistance of the head is not high… i can move the head realy easy. only the resistance of the motors is there. probably the rods are not alignt… i will try and print the alignment tool from thingiverse.

I would be realy happy if i could print this week =)

Check the [color=#408040]Wiki [/color]for a full alignment procedure.

i tried to print the XY-Carriage Alignment Helper from Thingiverse here the results
the printer makes a big mess… i will never get this project done -.-

https://www.dropbox.com/s/8kv85oaogzr2sqi/2015-06-29%2018.20.25.jpg?dl=0

i loosened the belts.

the two clamps are running smoothly at some points and at others not! its like… smooth, not smooth, smooth, not smooth… i think that my rods are not round/concentrical…

as you can see on the pictures on the right side of the plate its clearly better quality then the left side… on the left side my printer just makes what he wants. and i dont think that this because of the rods because the motor makes the movements of this mess… im loosing my patience =(

i realy thought it would be easyier

[quote=“Recoon”]the two clamps are running smoothly at some points and at others not! its like.[/quote]Typical of a bad alignment… Without belts the head must move freely from side to side when tilting the printer. You have to achieve that before going any further or it will never work.

I had the same thing going on, the best indicator is move the head back and forth and look closely to the belt your moving towards, if the belt is getting looser while moving towards it, it means your clamps are to tight and a few taps with a hammer to move them apart will fix it most likely… (seriously this is the most akward thing I ever used a hammer for… but since then it works amazingly well)

after i hammered the 2 clamps in the right distance ( its now freely moving from left to right to front to back ) i found out that i have 2 outer rods which are wrong… For example both are slightly to long and one not sure if both are not round and straight. so what do i have to do know to get two new of the outer rods?

im happy that i found the bad parts at my 3D printer =)

That would be a odd thing when you’re saying the rods are bend and not perfectly round? I would think the carriage runs terrible if that would be the case… How does it run if moving it by hand in a diagonal direction? If the rods are slightly to long just don’t tighten the end-caps to hard, or dremel them out a little so it just fits perfectly. (U should got some spare ones, in case U would ruin one)