Auto_Bed_Leveling: Enhanced G29 command

[DarkAlchemist]

Those are the proper dimensions as a heated bed has the solder terminals on one side so that is where the 200mm goes and the actual bed is 214mm. In my case Y is the 214mm and X is 200mm and it fits perfectly on the MK2b heated bed. I use 4 clips and they are on the 214mm side (in my case forward side of Y and the backside of Y of the heated bed).

[AbuMaia]

Huh. My solder terminals are on the bottom of the heatbed, so I guess it doesn't matter which way I orient the glass. I'll have to get bigger clips to hold a 3mm piece of glass.

[DarkAlchemist]

if you did it right the wires go through the holes and are soldered on the opposite side.

edit: No matter there is no reason to have glass over those holes/pads either because you don't want heat near them via transference from the glass and you don't have any heating elements there anyway.

[AbuMaia]

No holes, surface-mount MK1. So you have the glass longest dimension sideways, along the X axis? My heatbed connection is at Y max.

[DarkAlchemist]

On my I3, looking from front to back, I have the wires on the left side and the clips on the front side and the back side. The glass is a perfect fit.

http://reprap.org/wiki/PCB_Heatbed I updated a lot of the stuff on there earlier this year.

Here is a picture I added of my MK2b (the black one):
RRD-Mk2b-dual-power-connector_red_blk.jpg

Here is my full board I added to the wiki:
RRD-Mk2b-dual-power_blk.jpg

[Roxy]

Guys... This thread is already a ridiculous number of pages long... May I ask you to move this discussion to a new thread so this one doesn't get any more chaotic than it already is?

Thanks!

[DarkAlchemist]

Guys... This thread is already a ridiculous number of pages long... May I ask you to move this discussion to a new thread so this one doesn't get any more chaotic than it already is?

Thanks!

This is nothing but chaos already but I do think the people out there attempting to use ABL need to realize that plain window/picture frame glass is a futile effort at best. It may work for now but might not in the future and is far from flat like borosilicate (known as Pyrex glass as well) is. It all adds up to people being happy and getting this routine to work.

I know if someone was not using boro glass I would stop the help right there and I say that after using, and attempting to use, the other types of glass.

[syl20]

If you have a post-processing script already setup, syl20, I'd love to have a look at it.

Hi,

I hope it is not too late ! I have written a regular perl script for post processing with slic3r. This script replaces the custom Gcode parameters [G29XMIN], [G29YMIN], [G29XMAX], [G29YMAX] by their values.
The script is very fast (thanks to perl).

You can download the script here : https://github.com/syl-20/Marlin/blo...inting_area.pl

[Roxy]

Hi,

I hope it is not too late ! I have written a regular perl script for post processing with slic3r. This script replaces the custom Gcode parameters [G29XMIN], [G29YMIN], [G29XMAX], [G29YMAX] by their values.
The script is very fast (thanks to perl).

You can download the script here : https://github.com/syl-20/slic3r_scr...inting_area.pl

And just to keep things together and easier to find: This is the current Slic3r post processing program. It is untested but appears to do the right thing. We need to either update the original post in this thread to support the extra (and new) parameters or get the new G29 command folded back into the main code tree. But first we need to get some test time on the new code to shake out any bugs.

[syl20]

Hi Roxy,

With my script :
- only one script file (~80 lines) ;
- no need to compile ;
- no initialisation for x_min, x_max, y_min, y_max (with yours, theses variables are set to 9999.9 > if marlin is set to use micrometer ? )
- no need to create a new gcode file ; the user file is updated in place ;
- input and outptut are streamed ;