CoreXZ

Re: CoreXZ

Kenzu — Wed, 05 Jul 2017 15:24:15 -0400

Yes of couse :-) that is the easy part.

Thanks

Re: CoreXZ

nicholas.seward — Wed, 05 Jul 2017 14:17:30 -0400

You are correct but I would just use 1 for both and then use the steps/mm to calibrate. The ratio between the two is the real important number and yours is 1:1.

Re: CoreXZ

Kenzu — Wed, 05 Jul 2017 14:12:45 -0400

Okay maybe I will try it then.
Is it correct as 1:2 on both x and z?

Re: CoreXZ

nicholas.seward — Wed, 05 Jul 2017 13:49:05 -0400

That is a great arrangement. It will work.

Re: CoreXZ

Kenzu — Wed, 05 Jul 2017 13:43:35 -0400

Would this work as Z=1:2, X=1:2 ?

I'amnot good at this:-P

Thanks Jesper

Re: CoreXZ

rsenas — Wed, 23 Nov 2016 10:39:03 -0500

Good morning MagoKimbra, could you inform me how to modify corexz to core xy? I want to place it on top of the printer in cube format and the z axis goes down. Thank you and I await. Hugs.

Re: CoreXZ

rsenas — Wed, 16 Nov 2016 16:04:45 -0500

It's good that the model does not have big changes. Thank you and great day.

Re: CoreXZ

nicholas.seward — Tue, 15 Nov 2016 18:04:21 -0500

@rsenas: I haven't changed much. I have switch two of my machines from a geared extruder to a direct extruder. Other than that, it works great.

The biggest negative of this printer is the resonance that happens when you turn corners due to all the stretch in the string. This could be solved with higher test string. For me, the problem is only cosmetic at higher speeds so I have no motivation to fix it.

Re: CoreXZ

rsenas — Tue, 15 Nov 2016 17:51:27 -0500

Good night nicholas.seward I'm curious if you made modifications to the printer Core XZ, a nice project. Hugs.

Re: CoreXZ - SmoothieBoard

Anonymous User — Thu, 28 Apr 2016 08:22:17 -0400

Hi all,

I have a problem with the Core XZ on my Smoothieboard.

I used JNJ's method for connecting the motors as per below..

# arm_solution corexz # selects the corexz solution

# x_reduction 1.0 # standard CoreXZ has no reduction on x axis
# z_reduction 3.0 # standard CoreXZ has 3X reduction on z axis
# alpha_steps_per_mm 55 # xz motor 1
# beta_steps_per_mm 55 # xz motor 2
# gamma_steps_per_mm 110 # y axis motor[/i]

It all moves fine EXCEPT when I home the Y axis ... this makes the Z move..
I think this is because your alpha and beta motors become the X and Z axis.. hence the smoothie does not recognise the true Y axis?

Is it easy ( or how can I do it ) to make the xz motors the actual XZ motors on the smoothie?

Or do you have another solution for homing maybe?

Re: CoreXZ

neox3 — Thu, 17 Mar 2016 17:42:01 -0400

Quote
ryannining
Test print
[www.youtube.com]

WIth autobed level
[www.youtube.com]

Thx

hi, can you tell me how do you implemented the firmware? what do you change for corex xz? i tried repitier firmware and marlin kimbra with same results...

i have a big problem, i made a setup like the original, compiled, but in repitier if i say that it moves to the left +10, it moves to the left and up at the same time! and if i say to the right, it moves right and down.... up and down in z , doesnt runs.... i dont know what is happening... some help will be aprecciated!

Re: CoreXZ

ryannining — Tue, 01 Mar 2016 21:16:01 -0500

Test print
[www.youtube.com]

WIth autobed level
[www.youtube.com]

Thx

Re: CoreXZ

ryannining — Mon, 29 Feb 2016 10:58:18 -0500

Hi, my name ryan from Indonesia , i am trying to build corexz too

[www.youtube.com]

Using repetier firmware 0.92, just need to add ; in 2 lines, if its error when compile.

Thx nicholas !

Re: CoreXZ

rsenas — Mon, 18 Jan 2016 18:01:48 -0500

Thanks Nicholas.

Re: CoreXZ

solarprism — Thu, 31 Dec 2015 02:56:01 -0500

Quote
nicholas.seward
Green things are grounded and blue things move in the Y direction.

[attachment 68455 corexzbed.png]

Wow, silly me, i dont thing about the other end will be tied down to ground. Thank you Nicholas

Re: CoreXZ

nicholas.seward — Tue, 29 Dec 2015 02:28:48 -0500

Green things are grounded and blue things move in the Y direction.

[attachment 68455 corexzbed.png]

Re: CoreXZ

solarprism — Tue, 29 Dec 2015 00:22:14 -0500

Quote
PurpleLego

Quote
neox3

How only 1 motor in y ,can move it front and back with the same system of 625vvs?

scottyorr posted an implementation on thingiverse, which includes video. That should explain how everything works

Hi I saw the video and still get the same question as some other, i think i the string need to attach to the bed at some position right ?
If you can draw a sketch similar to the one for XZ axis in page 1, it will be a great help
Thank you

Re: CoreXZ

PurpleLego — Wed, 23 Dec 2015 12:20:46 -0500

Quote
neox3

How only 1 motor in y ,can move it front and back with the same system of 625vvs?

scottyorr posted an implementation on thingiverse, which includes video. That should explain how everything works

Re: CoreXZ

neox3 — Tue, 22 Dec 2015 05:21:22 -0500

Hi, awesome job!
This design is incredible and i am also making it at school in spain for my students, i have clear the x and z part, now we are in holidays but i need help with the y part when we return to school, we dont understand how the bed connects to the y motor, to made the movement, we dont see it in the models of gitub, someone can explain it to me?

How only 1 motor in y ,can move it front and back with the same system of 625vvs
?

A paint or a explain will we much appreciated of if i need some extra hardware.
In the x and z part, i made the tension with screws and no guitar plugs.
Very thanks in advance

Re: CoreXZ

MagoKimbra — Fri, 04 Dec 2015 17:44:46 -0500

Hi... sorry for my bad english.. I read this only now...

In MarlinKimbra in configuration_core.h you can set the moltiplicator for set 3:1 XZ..

/*****************************************************************************************
 ************************************* Core settings *************************************
 *****************************************************************************************
 * This define the moltiplicator axis from X to Y or Z in COREXY or COREXZ.              *
 * Example:                                                                              *
 * COREXY set COREX_YZ_FACTOR 1                                                          *
 * The result is:                                                                        *
 * X = dX + COREX_YZ_FACTOR * dY = dX + 1 * dY = dX + dY                                 *
 * Y = dX - COREX_YZ_FACTOR * dY = dX - 1 * dY = dX - dY                                 *
 * Z = dZ                                                                                *
 *                                                                                       *
 * COREXZ set COREX_YZ_FACTOR -3                                                         *
 * The result is:                                                                        *
 * X = dX + COREX_YZ_FACTOR * dZ = dX + -3 * dZ = dX - 3dZ                               *
 * Y = dY                                                                                *
 * Z = dX - COREX_YZ_FACTOR * dZ = dX - -3 * dZ = dX + 3dZ                               *
******************************************************************************************/
#define COREX_YZ_FACTOR 1
/*****************************************************************************************/

Re: CoreXZ

Gina — Tue, 10 Nov 2015 12:12:06 -0500

I posted an issue about this on Marlin github and it's a verified bug. Link here - [github.com]

Re: CoreXZ

dc42 — Tue, 10 Nov 2015 09:45:52 -0500

RepRapFirmware supports CoreXZ with up to 5-point auto bed compensation. It doesn't yet support grid-based bed compensation.

Re: CoreXZ

nicholas.seward — Tue, 10 Nov 2015 09:30:34 -0500

Repetier supports CoreXZ but I don't know about auto leveling. (Note: I have leveled my CoreXZ 1 time over the last year. That includes about 12 car trips.)

Re: CoreXZ

Gina — Tue, 10 Nov 2015 07:40:43 -0500

Looks like I shall be changing my CoreXZ to a cartesian arrangement. A few extra pulleys but I can still retain the 3:1 Z drive.

Re: CoreXZ

Gina — Mon, 09 Nov 2015 18:35:10 -0500

Has anyone got auto bed levelling working with Nicholas's firmware mod? It doesn't work with the Marlin 1.1.0 RC2 version of CoreXZ.

Re: CoreXZ

jnj — Mon, 05 Oct 2015 00:04:10 -0400

In case anyone is interested, the Smoothieboard code has been tested and merged into the main Smoothieware repository. There is also some sample configuration that you can put in your config file: [github.com]

It's working beautifully on my CoreXZ :)

Re: endstops: I don't use them, but they will work just as well as they would on any other Smoothieboard-based setup (i.e. just fine)

Re: Endstop Code

dc42 — Sat, 03 Oct 2015 09:46:45 -0400

Quote
scottyo

Quote
dc42
I don't know exactly what you mean by "taking endstops into account".

I am using RAMPS and Nicolas' version of Marlin. I might be making a wrong assumption about his code (and probably asking the wrong question). I am guessing he modified the CoreXY code for his CoreXZ implementation, and needed to somehow modify the X and/or Z minimum endstopping routines. Since leveling on the RAMPS depends on the Z-endstop, and both X and Z motors have to stop, I can see how that would require different considerations than a Core XY machine. I've not yet dug into the code very far (I've only grepped for COREXZ to find the files involved), and it might be more obvious once I do. But if not, or if I can't get it working, I might break down and buy a duet or a smoothieboard for my printer.

Should be no problem. When running my fork of RepRapFirmware in CoreXY/CoreXZ/CoreYZ mode on the Duet, when any homing switch is triggered during a homing move then all motors are stopped. This has implications if you want to set up the homing files to do simultaneous X and Y homing, as I describe at [reprap.org].

Re: Endstop Code

nicholas.seward — Sat, 03 Oct 2015 09:29:26 -0400

I do not remember what version I used.

Re: Endstop Code

scottyo — Sat, 03 Oct 2015 08:10:42 -0400

Quote
dc42
I don't know exactly what you mean by "taking endstops into account".

I am using RAMPS and Nicolas' version of Marlin. I might be making a wrong assumption about his code (and probably asking the wrong question). I am guessing he modified the CoreXY code for his CoreXZ implementation, and needed to somehow modify the X and/or Z minimum endstopping routines. Since leveling on the RAMPS depends on the Z-endstop, and both X and Z motors have to stop, I can see how that would require different considerations than a Core XY machine. I've not yet dug into the code very far (I've only grepped for COREXZ to find the files involved), and it might be more obvious once I do. But if not, or if I can't get it working, I might break down and buy a duet or a smoothieboard for my printer.

Re: Endstop Code

dc42 — Sat, 03 Oct 2015 07:30:44 -0400

Quote
scottyo
On another side-note, does either the Smoothie or Duet code mentioned above take auto-leveling and/or endstops into account?

The Duet code supports 3, 4 and 5-point bed compensation. I don't know exactly what you mean by "taking endstops into account". The Duet code gives you a choice of a maximum or a minimum homing switch for each axis, or you can use the Z probe in lieu of a low end switch where that is practical (e.g. Ormerod printers use a switch to home the Y axis and the IR proximity sensor to home X and Z). Once homed, the printer will refuse to exceed the high and low axis limits specified by then M208 commands in the configuration file, unless you choose to override this protection deliberately.