M3 are used in every 3D printer on the planet, while here are non existent.
Ah 3D Printer - yup - gotcha. Yeah, I have a Hypercube Evolution I need to finish at some point.
6mm is more than enough for a reduction if the gantry does not weight in to much.
Squaring is easy since 2.8, no need to move switches or adjust screws or.... nothing really
I presume there homing swicthes can't be too far out of a square position else things are going to go wrong. So get them in place based on some ruler measurements ...
, all you need is a plate/plank/blanket/big piece of paper to mark the set points with a sharpie, at 0.0, 0.1000, 2000.1000, 2000.0, then measure diagonally between two of those points and other two of those points.
Be aware that when measuring if using a tape measure it is very important to have the tape always on the same side of the set points, messing that alone can skew about 1-2mm. Values above are example, use what your machine can handle. Also never edit both Y offset values in the .ini file at the same time.
Now, say the measured values came back 8mm longer on one side, that will roughly be 4mm out on one side so use that in the .ini for offset.
then fine tune the home Y offset from where the switch triggers to get the a gantry that generates a rectangle/square shape that has equal diagonals. So you know it is square on all sides.
You could use a set square at your X check points. Have the setsquare so it reaches down to the paper/board/etc from the gantry after moving the Y to an asked for position.
When I get to that stage I will try and do a video of the process. Or write it all up with pics. Of course, it would help if my sensors would actually leave China.
Cheers - J.
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