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# End-of-Spool Feature

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A bit more explanation of how to use this feature would be helpful.  Maybe walk through an example of setting up a print to use the feature.  This page doesn't give any more information than you get looking at the settings tab.

Thanks for the feedback, Edward -- you were right. We've added more instructions on how to use the MSF file once it is created.

What is the best way to get the length of the remaining filament? Unspool and measure? Ask someone who's good at math to figure it out? Is there some handy-dandy-im-just-a-c-student guide?

At this time, unspooling and measuring would provide the most precise information for this feature, but we are working on making this process easier and more efficient in the future!

Thanks Jonny. I'm sure there is some way to measure the circumference of the spool, then estimate how many turns are left on the spool, then do some nifty math formula to approximate length. It's just unfortunate that I missed that class :)

That said, I wonder if there's a "spooler" with a mm measure so i can unspool the original spool to a smaller spool and count the distance at the same time. (maybe i'm overcomplicating this??)

I keep an eye on whats left on my spools by weight, 10m of filament should be around 35g or at least the samples I buy average around that. The weight of the spools varies some so I keep a spreadsheet and weigh my empty spools and the average this out in that spreadsheet. I can the make a reasonable guess how much is left of a spool.

I'm sure there are better ways to do this but that works for me at the moment.

{edit}

Found this on the rigidink site

https://rigid.ink/blogs/news/how-many-meters-of-filament-on-a-spool

I believe our 1kg spools are typically ~330m long (~3.03g per meter, or ~0.33 meters per gram).