Currently building a Micron 180....

[WarHammerTF]

Currently building a Micron 180 and have a question. The back extrusion on the gantry in any/all BOM's I have found is listed at 180mm. At least one of those BOM's was updated in the last couple of days for another change. 180mm is what is in my frame kit. In Maurici's Micron build diary he said he needed to go to 185mm  for that extrusion and referenced a cad that showed 185mm as the extrusion length.

Does anyone have any more info on this? Looks like a 180mm extrusion is long enough to allow squaring the gantry up and still has all the screws that attach to the printed parts engaged. It does require a/b drive printed parts to have about a 2mm gap from extrusion end on each side. All the Cad's I have found also show this bit of a gap.

Not trying to overthink this but at the same time once the major parts are together I do not want to have to take the printer apart to fix an issue that would have been pretty simple to deal with upstream in the build.

 

Thanks,

 

Jeff

[mvdveer]

5 hours ago, WarHammerTF said:

Not trying to overthink this but at the same time once the major parts are together I do not want to have to take the printer apart to fix an issue that would have been pretty simple to deal with upstream in the build.

Hi Jeff,

I did a 180 micron build from an LDO kit and cannot recall having any issues with the extrusions.

[WarHammerTF]

22 hours ago, mvdveer said:

Hi Jeff,

I did a 180 micron build from an LDO kit and cannot recall having any issues with the extrusions.

Thanks for the reply!

Jeff

[MrSprinklz]

According to Hartk (creator of the Micron) the BOM spec has always been 180mm on that extrusion. Some versions of earlier CAD had 185mm and so Formbot sent 185mm extrusions with a ton of their kits because of that right up until recently. The main area you run into problems is if you have a 185mm beam and are trying to use R1 gantry parts you need to chop it down. If you have a 180mm beam, you have the correct length.

[WarHammerTF]

Thank you for the info. I am feeling aok going with the 180mm. Working now on getting an X axis endstop switch on a Dragon Burner. I think I am almost there.

Jeff