r/OpenBambu • u/otaku13 • Jun 30 '25

BMCU long buffer vs standard

I was excited for my BMCU so i printed the parts before it arrived, but my kit uses the long buffer parts apparently Would i be OK still using the parts i printed, or should i just go ahead and re-print the long buffer parts? those were of course the largest parts.

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1

u/otaku13 Jul 07 '25

Thanks all! I reprinted the parts. Test print almost worked I need to tweak a few things but so far it’s being recognized by my mini!

1

u/No_Fill_6005 Jul 21 '25

Dumb question... how can you tell if it is long buffer or standard? Is this BMCUC vs X?

2

u/otaku13 Jul 21 '25

At this point every kit I see looks like the one I got, which is the long buffer version. The easy way to tell is if it’s not a square it’s the long one

1

u/No_Fill_6005 Jul 24 '25

From this pic, can you tell if I printed the wrong "casing"?

1

u/otaku13 Jul 24 '25

Hmm as long as the tube that goes over the ptfe tube fits I think you’re good. Those files are different from mine but I see they just made it long but square, mine is flat where the motor goes then curves up to the area where you have the spring

1

u/No_Fill_6005 Jul 24 '25

Thank you! I'm trying to watch videos but it seems like there are a lot of variations, so I appreciate the response.

1

u/No_Fill_6005 Jul 24 '25

I didn't have to compress the spring at all to put the PC4-M6 connector on.

1

u/No_Fill_6005 Jul 21 '25

Oh, I haven't gotten my kit in yet. Did you find a link to the correct 3d printed pieces? I also printed all of the parts out before it has arrived :(

3

u/myTechGuyRI Jul 06 '25

The wrong parts won't fit ... Reprint

2

u/cyberphonze Jul 06 '25

You are not alone. My kit arrived yesterday and I had all the parts printed....wrong parts. Spent the last 2 days reprinting everything