Z max build Height - Please Help pinpoint the config issue.

[xaberx]

When I built my printrbot I chose to go with larger rods for Z. The problem I am running into is that my Z build height appears to be limited to roughly 6". I have changed the settings in Prontrface to allow for larger build heights however I still cannot print past this point. Is there a setting I can add to my Gcode to extend the Z build height to the proper size?(im using 32" threaded and smooth rods, though I am only planning on going 24" ). I have measured that the top of the X carriage is exactly 8" from the heat bed when it will not go any further. I believe this to be a setting or configuration issue as my wires are long enough and there is nothing stopping the carriage from moving higher. Please help


Thanks in advance.

Xaberx

[artem]

Just double checking, did you change it in Slic3r too?

[plexus]

[extent]

[plexus]

[Mooselake]

[scantrontb]

because this will be a very important topic once they get the bugs worked out of the super sized mods done over at PBHQ and released to the public, i copied this topic directly over to the "PBHQ>>General" forum so they can get the full thread and answer directly, we can merge the two threads later on once it's been answered....

[allanonmage]

I bought some longer rods at Lowe's to increase the Z height of my Printrbot LC. Any word on if we need to fiddle with firmware? I don't think I'd mind loading firmware, but compiling it seems hardcore...

[lwalkera]

I made some changes to Marlin to add in M codes to change the soft limits. For those that know how to compile and load firmware you can grab it here: https://github.com/lwalkera/Marlin/tree/limitsaving For others, I'll try to get a hex file up soon.

[allanonmage]

That would be great if you could do that, seems this is starting to be a popular mod. With how easy it is, you can see why.

[allanonmage]

Any chance that this setting or firmware has been made easy to implement? I just raised the height max on my LC and would like to print taller than 6" at some point.

[elkniwt]

Was there any progress on getting a hex file of the modded firmware? I went to some trouble to get an 18-inch(!) X axis on my Printrbot Simple (Beta) and am disappointed to see it only go half way across.

[JonS]

I'm trying to extend the z axis on my Jr and there appears to be a 100mm firmware limit. My understanding is that the Jr has slightly different FW, so lwalkera's mod won't work.

lwalkera would you be willing to create a version for the Jr?

[SilverFingers]

Has anyone got this working with the JR? I just extended my Z axis and it wont let me go further than 100mm

[JonS]

I loaded the universal f/w yesterday and reversed the y-axis with a negative calibration. Everything is working apart from y homing which attempts to move in a positive direction.

[RetireeJay]

[JonS]

Thanks! Plug reversal time it is then!

Well, that or put a 90° twist in my belt!

[JonS]

Done! I now have 7-inches of z-height!

[allanonmage]

um.... I don't know where this thread went. Did the firmware get updated for the printrbot/LC?

[Nickies08]