Removing stringy bits...

Discussing what we do with our prints after we make them (clean up, integration, etc)

Removing stringy bits...

Postby DonaldJ » 2014-Jul-Sat-11-Jul

Despite my best efforts, some of my recent vase projects had those annoying stringy, spider-webby things in the interior. The exterior surface was excellent, but the interior? Ugh.

Went to Home Depot and got one of those multi-purpose, long-beaked, multi-purpose lighters (used for fireplaces).

A quick blast of Mr. Flame and those stringy bits melted and clumped together at the interior surface, at which point they are easily scraped off. Not a perfect solution, but certainly good enough for my purposes. Works fine with PLA, don't know about ABS or other materials.

There may be some slight discoloration due to soot, which I imagine can be washed off with soap and water.

Still testing...please observe standard safety protocols.
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Removing stringy bits...

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Re: Removing stringy bits...

Postby EddB » 2014-Jul-Sun-14-Jul

I use the reflow heat attachment from om my soldering station (glorified heat gun). Works incredibly well and don't have to worry about flame discoloring. Also useful for permanently seating captive nuts/bolts into your pla/abs parts.
If you don't have access to a heat-gun, you could always use a household hair dryer to eliminate the printing "webs" /stringy bits.
Like you, I have also grabbed my butane pencil torch if it needs just a couple seconds of touch-up heat! All methods work to remove those 'stringy' webs! :-)
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Re: Removing stringy bits...

Postby RetireeJay » 2014-Jul-Sun-15-Jul

Hobby stores also have heat guns which produce a much hotter output air stream than hair dryers (albeit at a much lower flow rate). These might be easier to find than soldering tools, depending on what stores you have nearby.
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Re: Removing stringy bits...

Postby DonaldJ » 2014-Jul-Sun-20-Jul

EddB wrote:I use the reflow heat attachment from om my soldering station (glorified heat gun).


Ack!

I *have* one of those! Didn't even think of it. Damn.

There's another three bucks down the drain...

Thanks for the reminder!
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Re: Removing stringy bits...

Postby DonaldJ » 2014-Jul-Sun-20-Jul

RetireeJay wrote:Hobby stores also have heat guns which produce a much hotter output air stream than hair dryers (albeit at a much lower flow rate).


Got one of those, too...

There's two signs of getting old. One, is loss of memory. I forget what the other one is...
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Re: Removing stringy bits...

Postby jphphotography » 2015-Jan-Mon-12-Jan

For small parts I've been using a bic lighter :) I put the part on my counter, depress the gas for a bit without sparking, then ignite, there is a brief Whoof and the tiny strings are gone. Obviously don't do this for objects that may trap the gasses inside. I didn't experience any discolouration and since the flame is only there for an instant I don't see it causing a risk of warping anything. Anyway worth a try but be careful.
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