Z axis wont move up during print?

Hello all!

FINALLY got this thing going to where I can start printing some test peaces!

I have my steps calculated, and squirting some plastic!!

Problem is, the Z axis does not move up while printing!
stays at the same level during the entire print. I have to cancel everything.

I have full manual control of all axis... moving up/down/homing ect, all with manual control.
As soon as I hit 'print' all axis home, the extruder warms up to temp, the z axis moves to ground zero,
and prints out layer one, Z AXIS DOES NOT MOVE UP to start the second layer... prints over top of layer one.

help?! LOL

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Custom all metal CoreXY
- Duet 2 Wifi w/ PanelDue 7i
- 330mm x 360mm x 500mm
- 750w Silicon heater

Custom Mendel90
(Backup printer - Old reliable!) - Sold

is z axis dir correct in firmware?

Does your gcode contain Z axis moves? If possible, post the code.

What speed have you limited your z axis to in firmware? If it gets a command to move at say 40mm/s (which it will try to if that's the overall printing speed you set in your slicer) and hasn't been limited then it will just let out an extremely short hum and not move. Try limiting it to 2-3mm/s (120-180mm/min) in firmware. If this works you may be able to increase.

James, all axis moves in the correct direction manually, so I believe the dir is correct.

MPower, yes the gcode contains Z moves.

Konwiddak, I have the Z speed limited to 3mm/s in the firmware. I honestly didn't see the setting in slicer... I'll check after work!
But I do not hear a hum from the Z motors(that I am aware of)

Attached is my gcode.

And thanks for the input!!

Chris

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--------------------------------------------------------
Custom all metal CoreXY
- Duet 2 Wifi w/ PanelDue 7i
- 330mm x 360mm x 500mm
- 750w Silicon heater

Custom Mendel90
(Backup printer - Old reliable!) - Sold

There is no limit in slic3r (or any slicing software) which is why it must be limited in firmware. But you seem to have done that anyway!

I'm still at a loss here...

I have full control of the machine, but it just wont move up on the z axis when printing

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--------------------------------------------------------
Custom all metal CoreXY
- Duet 2 Wifi w/ PanelDue 7i
- 330mm x 360mm x 500mm
- 750w Silicon heater

Custom Mendel90
(Backup printer - Old reliable!) - Sold

Just a thought

Have you got max endstops enabled, and perhaps max Z is triggered?

GIve the machine a m119 "Get Endstop Status" see it it tells you anything.

your z feed rate is way way to high

G1 Z2.070 F7800.000

in firmware configuration.h look for feedrate and limit z feedrate to something like 2 or 3mm a second, or 180mm a minute. list your configuration.h file here, an we will help you change it.

Edited 1 time(s). Last edit at 02/16/2013 05:00AM by jamesdanielv.

Thanks!
Here is my config h, STL and gcode I'm using.

Using Marlin firmware, on RAMPS 1.4.
Repetier-Host 0.84 with slicer 0.9.8
Nozzle is 0.35mm filament is 1.75 (measured at 1.7)

I have FULL MANUAL CONTROL of all three axis of the machine...
I tell it to move 10mm, and it moves 10mm.

Thanks for the help guys... I'm really stumped once again!!
(Sure hope its something simple that I have overlooked!!)

Cheers,
Chris

---

--------------------------------------------------------
Custom all metal CoreXY
- Duet 2 Wifi w/ PanelDue 7i
- 330mm x 360mm x 500mm
- 750w Silicon heater

Custom Mendel90
(Backup printer - Old reliable!) - Sold

Errrr......

Now I have a plugged extruder!!

---

--------------------------------------------------------
Custom all metal CoreXY
- Duet 2 Wifi w/ PanelDue 7i
- 330mm x 360mm x 500mm
- 750w Silicon heater

Custom Mendel90
(Backup printer - Old reliable!) - Sold

My guess at your Z problem is perhaps the current is set too high. During the first layer the driver overheats and shuts down. When it gets to the second layer and doesn't move are the motors locked or free?

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[www.hydraraptor.blogspot.com]

I just double checked my currents and temps... all seems well within limits.
All pololu's are around 40c under loads...
No signs of losing steps... no large hum from any of the motors(over current)

Now one thing I have noticed, is that in Repetier-Host, it is indicating the rise in Z travel,
but the LCD does not.... should it?!

And, I'm 99.9% sure I have this right, but I'll double check with you guys
I have 1/4 - 20 acme rods driving my Z axis...
So the lead is 0.05" and converts to 1.27mm so the math says:

2519.685 = (((360/1.8) * (1/(1/16)))/1.27h)*(1 / 1)
I actually use 2535, as that gets me bang on with the dial indicator.

Oh, and whats the best way of clearing the nozzle without ripping everything apart?

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--------------------------------------------------------
Custom all metal CoreXY
- Duet 2 Wifi w/ PanelDue 7i
- 330mm x 360mm x 500mm
- 750w Silicon heater

Custom Mendel90
(Backup printer - Old reliable!) - Sold

#define X_MIN_POS 0 //-100
#define X_MAX_POS 200 //100
#define Y_MIN_POS 10 //-90
#define Y_MAX_POS 200 //100
#define Z_MIN_POS 20.2
#define Z_MAX_POS (Z_HOME_POS - 0.1)



change to this
#define X_MIN_POS 0 //-100
#define X_MAX_POS 200 //100
#define Y_MIN_POS 10 //-90
#define Y_MAX_POS 200 //100
#define Z_MIN_POS 0
#define Z_MAX_POS (Z_HOME_POS - 0.1)

see if that helps. try it but use caution. what i think is happening is you are below the minimum set z height because in firmware it is set to 20.2, so until gcode goes above that, you will not gain any z height. your firmware is newer than mine i would guess. it looks like you have a configuration to home z at top, so you will need to subtract 20.2 from Z_HOME_POS

so change these lines as well
#define Z_HOME_POS (203) //#define Z_HOME_POS 0

to

#define Z_HOME_POS (203-20.2) //#define Z_HOME_POS 0

check it out see if the above is reasonable to your issue. use caution and be ready to power off your machine if z home is not calculated correctly.

Huh, that seems reasonable!

I don't have time to test this yet, but I'll update the results when I do!
I've made the firmware changes, and still need to fix the plugged nozzle.

Thanks for the input!

Chris

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--------------------------------------------------------
Custom all metal CoreXY
- Duet 2 Wifi w/ PanelDue 7i
- 330mm x 360mm x 500mm
- 750w Silicon heater

Custom Mendel90
(Backup printer - Old reliable!) - Sold

Well James, THANK YOU VERY MUCH!!

I didn't have time to print anything last night,
But the dry run I did proved that the Z axis willl now move up druring the print!!
I had to oversize my 0.35m nozzle to 0.5mm as I could not get the clog out (
But as a noob, maybe it will be better for learnig this eh?

Thank you again!

Chris

---

--------------------------------------------------------
Custom all metal CoreXY
- Duet 2 Wifi w/ PanelDue 7i
- 330mm x 360mm x 500mm
- 750w Silicon heater

Custom Mendel90
(Backup printer - Old reliable!) - Sold

I cant even move my z-axis manually. going to try a few of these ideas.

mgarsteck78 said :'I cant even move my z-axis manually. going to try a few of these ideas.'

upload your config.h someone will try to help you. also let us know the type of 3d printer, and the firmware as well as the hardware such as ramps, rambo, or whatever you are using.

ok, thanks for the help.

I have the I2, using repetier firmware and host. ramps 1.4

Edited 1 time(s). Last edit at 05/05/2013 11:09PM by mgarsteck78.

still adding to with edits:

ok, now that i have the correct config file - somehow i was looking at the original one posted here above a while back,

this is what is different

#define ENDSTOP_PULLUP_X_MIN false
#define ENDSTOP_PULLUP_Y_MIN false
#define ENDSTOP_PULLUP_Z_MIN false
#define ENDSTOP_PULLUP_X_MAX true
#define ENDSTOP_PULLUP_Y_MAX true
#define ENDSTOP_PULLUP_Z_MAX false

//set to true to invert the logic of the endstops
#define ENDSTOP_X_MIN_INVERTING true
#define ENDSTOP_Y_MIN_INVERTING true
#define ENDSTOP_Z_MIN_INVERTING true
#define ENDSTOP_X_MAX_INVERTING false
#define ENDSTOP_Y_MAX_INVERTING false
#define ENDSTOP_Z_MAX_INVERTING true


here are the defaults


#define ENDSTOP_PULLUP_X_MIN true
#define ENDSTOP_PULLUP_Y_MIN true
#define ENDSTOP_PULLUP_Z_MIN true
#define ENDSTOP_PULLUP_X_MAX true
#define ENDSTOP_PULLUP_Y_MAX true
#define ENDSTOP_PULLUP_Z_MAX true

//set to true to invert the logic of the endstops
#define ENDSTOP_X_MIN_INVERTING true
#define ENDSTOP_Y_MIN_INVERTING true
#define ENDSTOP_Z_MIN_INVERTING true
#define ENDSTOP_X_MAX_INVERTING true
#define ENDSTOP_Y_MAX_INVERTING true
#define ENDSTOP_Z_MAX_INVERTING true

for now see if that works for you. I don't currently have repetier host firmware. i do use marlin and the repitier host software on a windows 7 pc.

depending on what happens is what we do next. if z axis works then it is good. if it does not then look at how the homing switch is wired.

Edited 5 time(s). Last edit at 05/06/2013 04:45PM by jamesdanielv.

we have z-axis functioning! Woooo!

Edited 2 time(s). Last edit at 05/06/2013 12:03PM by mgarsteck78.

I had this problem, adding a cooling fan worked, but I think your problem might have been the endstop settings?

Can you (besides that it worked) also let us know what you did to make it work?

I changed the values according to the post above.

wait, the z-axis goes up, but not down. Do you think its in the same settings?

in repetier host, you need to select home z, otherwise by default the host software will not let you go below zero.

Im playing around with the host software and the firmware and I have set my home Z. However, I still cannot make the z-axis go down. It did for a few minutes, then it would only go up. I cannot even manually control the z-axis

Edited 2 time(s). Last edit at 05/06/2013 10:32PM by mgarsteck78.

Jamesdanielv, you helped fix my very frustrating problem. Thank you!

So I am using Sprinter, I have the same Problem, but do not have those Variables....

Exact same diagnosis, just squirts all the layers into the same Z height, but normal manual control.
Repetier shows Z coordinates fine, and the feed calibration is fine.

I dont know what to fiddle with!!

Could anyone take a peek? RepRap Mendel w Ramps1.4, Sprinter, Slicer, Repetier

My Z speed
float max_feedrate[] = {200000, 200000, 240, 500000};
was too high. Changed down to 170.

I have a same problem like Mogal: Z AXIS DOES NOT MOVE UP or up enough... so the printer moves throw the filament and smash the build... (see picture, it should be a cube )

At the android dummy it do the same...

I tested the whole day plz help...