this post was submitted on 20 Apr 2025
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If you don't have a fancy-schmancy printer that tracks filament usage and warns you if you don't have enough filament left on the currently-loaded spool to complete the print, this is how you know. You can even double-check while it's printing, like I do in this video.

This is why you should always keep a kitchen scale and one empty spool of all the filament brands you use.

Low tech but useful. I figured I'd share.

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[–] p1mrx@sh.itjust.works 1 points 2 days ago* (last edited 2 days ago)

It would be useful to have an "empty spool database" where people post a photo+weight of their empty spool, plus some fancy way to search by image.

Edit: https://github.com/jtrmal/spoolz looks like a partial solution.

[–] dhork@lemmy.world 4 points 6 days ago

But if you know how much filament you have, it takes all the fun out of playing Filament Chicken....

[–] cmnybo@discuss.tchncs.de 3 points 6 days ago (1 children)

You can also use the scale to see when a roll of filament is done drying.

[–] ExtremeDullard 3 points 6 days ago (1 children)

How much weight difference do you see? Do you simply wait for the weight to stop changing?
Good thinking. I didn't think about that.

[–] cmnybo@discuss.tchncs.de 3 points 6 days ago (1 children)

I just check it every hour or two and stop drying when it stops getting lighter. I usually see an 8-10g drop after drying a new 1kg spool of PETG.

[–] ExtremeDullard 5 points 6 days ago (1 children)

Interesting. I'll have to try the reverse experiment: I have a roll of TPE that's been drying in the dryer for at least 3 weeks. I'll take it out and see how fast it'll reabsorbs water.

[–] CaptainBlagbird@lemmy.world 1 points 6 days ago

Very cool idea! Please share your results once you have done it :)

[–] technomad@slrpnk.net 3 points 6 days ago

That's a great tip, thanks for sharing!

[–] Thavron@lemmy.ca -3 points 6 days ago (1 children)

I'm sorry but is this really a tip? To find out how much filament you have, you weigh it? Who'd have thought.

[–] ExtremeDullard 6 points 6 days ago

Yes, it's obvious. But maybe it's useful to those who didn't think about it? Sometimes the most obvious things are the easiest to miss.

I'm sorry you feel so negative about it.