Layer Shifting

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ExplodedZombie
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Re: Layer Shifting

Postby ExplodedZombie » Thu Nov 29, 2018 1:57 pm

Wow those settings are way different. The 400mm/s travel speed is a little concerning but the rest looks great.

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geneb
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Re: Layer Shifting

Postby geneb » Fri Nov 30, 2018 7:28 am

400mm/sec is only valid for Duet-equipped machines. Dial it back to around 200mm/sec.

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rootboy
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Re: Layer Shifting

Postby rootboy » Sun Dec 02, 2018 12:54 pm

That's how I set mine up is with the SeeMeCNC profiles. I added what I felt was needed to it as I went.

ExplodedZombie
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Re: Layer Shifting

Postby ExplodedZombie » Tue Dec 04, 2018 12:09 pm

I switched to the new profile with 200ms travel and here are the three cubes I printed from the same file (pictures later maybe)
1. Nice overall shape, lots of stringing and blobs/zits
2. Same as above, pretty large layer shift to the left (just like always)
3. Same as #1

So as always, intermittent layer shift to the left. It must be mechanical right? I honestly can't feel any looseness in gears, belts seem adequate.

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geneb
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Re: Layer Shifting

Postby geneb » Wed Dec 05, 2018 8:33 am

Is the nozzle lifting before it makes a travel move?

You might also check the wiring of all three steppers to make sure a pin isn't crawling out of the connector shell.
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ExplodedZombie
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Re: Layer Shifting

Postby ExplodedZombie » Wed Dec 05, 2018 10:48 am

The nozzle does have z-lift. It's ridiculously high, too. I was going to remove it but honestly the results are the same as any time in the last few months. Nasty layer shift to the left.

I will start checking the wiring. The thing was such a pain to put together that I've avoided taking anything apart at all. I'm super limited on free time between work and family stuff so had my fingers crossed that it was software :(

ExplodedZombie
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Re: Layer Shifting

Postby ExplodedZombie » Thu Dec 06, 2018 6:11 pm

Here is a sad thing, as I was removing fans I noticed that the standoff on the Y side is not flush against the top of the effector plate. it was up by two threads. Apparently it doesn't pull tight when screwing the plate to the standoff. I can only imagine this causes the hot end to be a little tilted... I might need a new effector and like everything else because things just seem to be off in every way.

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geneb
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Re: Layer Shifting

Postby geneb » Fri Dec 07, 2018 8:16 am

If it's not able to tighten flush, there's something in the way.

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joe
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Re: Layer Shifting

Postby joe » Fri Dec 07, 2018 5:27 pm

ExplodedZombie wrote:
I will start checking the wiring. The thing was such a pain to put together that I've avoided taking anything apart at all. I'm super limited on free time between work and family stuff so had my fingers crossed that it was software :(



I'm thinking, if you thought the thing was a pain to put together (because they are NOT) and you are stressed for time now and we're probably stressed then you have made a lot of little mistakes. They have added up to your problems.

Take it all apart and start the build from scratch. Take your time. It will go a lot faster and your understanding of how it all works will click.

ExplodedZombie
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Re: Layer Shifting

Postby ExplodedZombie » Sat Dec 08, 2018 2:28 pm

Definitely a good idea. I put it together several years ago when I wasn't strapped for time. But I did do some upgrades a few times, and I've honestly never had the best attention to detail so yeah there could be quite a few mistakes.

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rootboy
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Re: Layer Shifting

Postby rootboy » Sat Dec 08, 2018 10:39 pm

Yeah, Gene's instructions are some of the very best for assembling anything. He should work for IKEA... For comparison, try building anything from FLSun and you will get a rude awakening. So it's pretty easy to one of these things together.

Pictures of the platform area would be helpful.


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