hello,
i have a problem where anything i print is always double its intended size on the z axis
i don’t know what i have done to cause this but i would appreciate any help you can offer me
in repetier the object placement looks normal, in slicer tab too and manual control the graphics look normal - but the printer prints 2 layers for every one intended
i would expect that i have altered a number of layers value somewhere but can’t find it anywhere
please help
Does this happen on every print?
And does the g - code show that extra layers too?
yes each print is 2X the normal height - adjusting the layer height setting makes the print finer but still 2X height - the g-code imahe is the same as the object placement and slicer preview
If you count the layers printed are they eqal to your layer counst in repetier?
I don’t believe your printer doubles layers.
I think your steps/mm for the z axis are set wrong.
how can i go abour RESETING EVERYTHING - uninstalling repetier host has not solved the problem - a fresh start is neede i think
Try to reset the printer to default firmware settings by sending a M502 followed by M500 manually through repetier.
Did you load the firmware for one print head?
The default mfirmware is for two heads.
[quote=“Wrong Way”]Did you load the firmware for one print head?
The default mfirmware is for two heads.[/quote]
Why should that double the layer height or count?
Do you know which kind of electronics board is used in the Vertex?
I want to take a closer look at it to get familliar with.
I’m not sure.
But this needs to be done if you only have one head.
As you have seen in other places on this board not following the instructions leads to problems
Do you know what type the board is?
I couldn’t find out until now.
No I don’t.
But I will find out
I would think it’s close to the K8200.
i have been trying to recalibrate the motor drivers as per the instructions. (i have all four at 0.425v(or within .002 of it)), and have then come to try the unit. prior to this i did the m502 and m500 commands as suggested.
now: the x axis does nothing when using manual control in repetier; the z axis only works in reverse when the home button is pressed and continues as far as it can before i have to use the reset button to stop it from breaking the z axis guide; and the y axis button makes the y axis jump forward and backward very quickly and repeatedly until i reset.
the extruder and bed heat up okay and the filament feed works fine
so i am at a complete loss as to why the motors are behaving so differently than before recalibration
any ideas please?
Hi, Are you talking about the K8200 or the Vertex 3D printer?
If it is about the K8200, it is possible you have the wrong firmware loaded. Do you have the upgraded Z axis or still the stock one?
Sincerely
i have upgraded the firmware to 2.1? i think - the latest one available on vellerman website that supports stand alone controller board, but am not using it now as it is faulty - i have managed to do a reset on the printer, and on the pc controlling it - after the reset, the z axis, x axis extruder and both heaters - only the y axis is still giving trouble - i asssume the board is okay, after a manual control command from repetier either forward or reverse there is a very quiet humming noise from the motor (for the usual duration of the command). the current is 0.425v as are the others - so why not the y axis - and more importantly - what can i do about it?? i do not think i have done anything at all to create this problem (i could be wroung though) this is totally random 
thanks for the help so far
p.s. it was the k8200
Oops
I thought you were asking about the K8400.
the 2.1 firmware for the K8200 doesn’t work from stock.
It is made for the k8200, that’s why the steps/mm for z axis is set for a 1.5mm trapezoid leadscrew and also for 1/32 microstepping.
If you want to use it on the k8200 you have to change the steps/mm for the z axis.
(don’t know if this is true for X and Y too.)
Set ALL stepper drivers to 0.55v as this turned out the best working value for allmost all users.
Hi,
There was an error in the 2.1 firmware and it has been remedied in the 2.1.1 firmware (do not forget to reload your eeprom setitngs after flashing)
The steps per unit value for the Z axis was wrong. It has been corrected in the new firmware version.
(We will place this thread in the K8200 forum.)