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Attaching a piston head breaks its ability to retract (low priority)

Elisa Iruki shared this bug ago

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Attaching a piston head to a piston body causes it to not be able to retract. It doesn't matter if it's the same piston head removed and re-attached or a new one. Attaching a piston head breaks it every time even if you build it out in the open with nothing around it. Can go up 1m/2m/3.5m it will always lose its ability to retract. The affects small and large pistons, was tested in a new creative world, and is reproducible

When standing on top of the newly attached piston head it shakes and can push the character off especially on small pistons. The character will also stand at an angle when on the issue piston head

(Work around:)

Saving and reloading the world fixes this issue and allows the piston to work normally again

I have the same bug

Replies (1)

Zebrator ●

I can confirm I have the same problem, though it's rare because I managed to reattach the head, but I haven't been able to reproduce it.

However, I don't think it's a low priority, because it causes a problem with blueprints. I made a ship with a cargo bay that opens like an elevator. I created it in Creative mode and then built it in Survival mode. The blueprint didn't preserve the cargo bay structure because it's a different grid than the first one, and it's therefore impossible for me to reattach this cargo bay built separately. I think the problem is more widespread.

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Elisa Iruki ●

Oooooh this is very interesting

I labeled it as low priority due to me being in creative and the fix being <attach new piston head then reload save>

But survival is a whole new ordeal. That makes this a much more real issue and as you said a whole grid having issues now due to this.

I can reproduce this over and over but the fix is just reloading the save.

I'm not sure if this would fix it but in survival try to only weld the new piston head, then save the world and load the save and continue the sub grid after

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Zebrator ●

I spent a whole day on this, in survival mode, trying to reassemble the chassis (main grille) with the cargo bay (secondary grille containing the pistons).

It was extremely complicated to get them together. Since the cargo bay fits into the chassis with a 0.25mm gap on each side, it was necessary to be perfectly aligned and figure out how to connect the two.

I'm not entirely sure I've succeeded and don't have the courage to detach and try again. The alignment was difficult; I tried multiple ways to achieve it. The best method I found was to add pistons in the corners to push simultaneously on all sides, very gently, to center the cargo bay. This method works more or less; I was expecting a better result, but it still helped. I used a few pushes to finish the alignment properly.

I still had a lot of trouble with strange bugs, like the piston activating and deactivating, which caused it to explode. Other times, certain manipulations made it go haywire.

Finally, when it worked, I think I created a head, detached and reattached it several times to make sure it worked, then I detached and disassembled it, raised the secondary piston to get closer to the head on the chassis, which seems to have worked.

In the end, it's possible, but it's a real pain. I was expecting it to work more like the connectors for the station, with alignment from a defined area; that's consistent with the technology.

As it stands, it's not feasible to use this detach/attach function, which, if it works well, could be very useful for allowing interchangeable elements. I have quite a few ideas, but they aren't feasible at the moment.

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