X-axis mirroring is incomplete
Closed this issue · 15 comments
Firstly, I don't like that the x-ends have been mirrored, as I've laid out the cables already :/ But I'm sure there are people who like it, so please make this a configuration option.
For the mirrored version, as it currently stands, you don't mirror the x-idler. The nut trap is now visible from the front of the machine, so please mirror all three parts to return the nut trap to the rear where it belongs.
I can fix this in my local copy, but it will affect others, so please keep it in mind for the next time you're doing a commit. It's an easy fix.
Why would you want th e x-axis to be mirrored? The box frame parts come out correctly aligned. Smooth side to the front, nut traps to the top.
I'm not talking about the x-carriage. I'm clearly talking about the x-ends. If you look in the code, it is mirrored down at the bottom of the file.
x-ends are mirrored so when the smooth sides are in the front and stepper to the left (which is default configuration), the nut traps are on top.
I fixed complete-printer-plus.scad to show the change.
I had to look at complete-printer-plus.scad to figure out what you were saying :)
So why was this change made? Many printers don't produce a smooth side, they produce an ugly side. And even though mine are smooth, I think the rounded side looks much better facing up.
I still think you should include this as a configuration option to go back to how things were, by turning off the mirroring.
The nut traps should be on top to prevent Z threaded rod binding when the x-ends and steppers are not perfectly aligned.
The change was so we have more space around extruder for experiments
And its needed for printers with 10 or 12mm smooth rods
This doesn't need a configuration option. If you want, you can always use a previous version with git.
We sometimes need to break the old ways, like happened here. Sorry if you need to rewire your machine to adapt the new way.
The mirroring does not need any rewiring as all components with wires are in the same place. Both parts are mirrored in the right way.
When you mirrored the parts, you didn't explain why.. anywhere. So my motor is on the right.
But I designed the wiring layout for the motor to be on the left, so the updated complete-printer-plus.scad fixes it for me.
I think you need to keep this file up-to-date with every commit, as when I started my build there was a near complete absence of documentation. It's still not very clear to a newcomer what they are supposed to be doing.
Good thing that turning the axis around so the stepper is on the right and nuts on top is three minute job ;)
The idler tensioner is still not mirrored, so that it is installed shiny side down into parts that are shiny side up.
I don't have access to reopen this issue, so I may have to create a new one if people don't notice the above post. I think it would be better not to close issues so quickly without testing the fix. In this case, a version was committed without an idler tensioner at all, and at that time the issue was closed.
Just turn it around by hand, its not stereospecific. The idler was missing because I was testing updated pushfit module, did not want to waste plastic and forgot to uncomment. Please let this isue sleep, it does not really exist.
I posted a comment, and it has gone away. The idler tensioner is not equal to its mirror image. One side has a visible nut trap, the other doesn't. But one side is shiny and the other is not. So unless you also mirror the idler, the end user has to choose between the shiny side facing down when inserted into a part with the shiny side facing up, or the nut trap visible from the front when it's uglier and not drawn that way in the complete printer.