Snatching defeat from the jaws of victory - I'm afraid to open it

[Ray Price]

So, you might recall a few weeks ago I posted about having a use for old format Inland master spools and using the Pasta Lite spool rewinder.  

I had a sealed spool of Amaz3D filament with a core too small to use, so rewound it onto an empty Inland master spool.

Even inspired Kurt to post a video of a buddy doing his own repooling.

After I had finished the winding (it got a little tricky at the end), I safely secured the new spool in an Inland spool ziplock bag with desiccant and put it on my cart for future use.

Well, today I was walking by and glanced at my nice full spool on the rack and something looked odd.  Looking closer I was horrified to find this!

I'm really afraid to open the bag!  looks like the last 20% of the roll just shattered into pieces?

[Alan B]

I've had that happen with old PLA. It responds to stress by shattering later.

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[Kurt The 3D Printer GUY!!]

Ray,

Gotta say - those pics are WILD to look at - albeit - TRULY SAD Indeed!!!

So, this brings up something. That is - the inner windings of a spool - it can be tough to use the spool all the way to the end - especially with PLA. The closer you are to the center - the SMALLER is the Diameter of the Windings. That has a very Adverse affect on the filament! Now - there you go- respooling (and I enjoyed your mention of my funny co-worker doing a crazy respooling) - and, problem is - Naturally - the Inner windings of the old spool - become that Outer windings of the Respool. And, as you will see in your pics - it's like the Outer 1/4 is FUBAR - as that was previously the Inner 1/4 of the original spool. 

Yeah - I have OLD PLA spools - that I can print with them - but, when I get to the very inner windings - it starts breaking a lot - and ruins print jobs. Will literally have MULTIPLE Breaks within the feeding tube - between initial feeding in and the print head. It all makes sense - since as print head is moving around - the feeding tube is Constantly Flexing in different ways. 

So - there you have it...

Still - you probably CAN have a Miner Victory - if you carefully open the bag - find the true End of the filament - which it last broke - and hopefully you CAN Indeed use the rest of the Spool dude!

Keep us posted - as to whether you were able to use that spool - at least 50% of it - as this makes for an interesting story. And - for future newbie hobby 3DP folks who join the forum - being able to go back to this old posting thread - will make for some great Anecdotal stories...

-K

[3D Printing Tips and Tricks]

Wow… yup… tighter winding, more stress… snap!

[Alan B]

If you respool twice, and do it with warm filament, you have a better chance of success. But basically old PLA is a lottery. And don't leave it on the machine, it can shatter inside the guide tubes and make a mess. It's fun getting the bits out of the long XL tubes. 

Changing to PETG has many advantages. It doesn't have the embrittlement problems that PLA does. You can leave it on the printer always ready to go. Our humidity is 20-40 percent and PETG doesn't seem to have problems sitting out for extended periods.

AlanB

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