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forum threadgabe23111 posted Today 01:55 PM
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forum threadgabe23111 posted Today 01:55 PM

4-Pack 1-kg SUNLU 1.75mm PETG 3D Printer Filament (Black) $35.99 w/ Prime Shipping

$36

$47

23% off
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Sold by Sunlu Shipped by Amazon.

Only Black is this price.
There is a 10% coupon that is automatically applied at checkout bringing the price to $35.99.If you have 5 items in your next Subscribe and Save Delivery, price will be $33.99 if you checkout with S&S.
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Sold by Sunlu Shipped by Amazon.

Only Black is this price.
There is a 10% coupon that is automatically applied at checkout bringing the price to $35.99.If you have 5 items in your next Subscribe and Save Delivery, price will be $33.99 if you checkout with S&S.

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11 Comments

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Today 01:57 PM
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TekkenLordToday 01:57 PM
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Is this official Gundam product?
Today 02:15 PM
53 Posts
Joined Apr 2021
JollyReward8938Today 02:15 PM
53 Posts
Make sure to dry this stuff before use
Today 02:18 PM
1,423 Posts
Joined Nov 2013
NickB3364Today 02:18 PM
1,423 Posts
Quote from JollyReward8938 :
Make sure to dry this stuff before use
1000% agree with this. I love Sunlu PLA Matte, pretty much use it for everything, and I picked up some of their PETG Matte to try. It was a HORRIBLE print. Bubbly, stringy, complete mess. Popped the spools in my filament dryer for the standard 6 hour overnight dry, then gave it another go. Fantastic prints with it after that.
Today 03:32 PM
368 Posts
Joined Dec 2007
SimplykindToday 03:32 PM
368 Posts
Any recommendation on a cheap yet usefull 4 spool dryer? Or would you only need a single or double and just dry occasionally?
Pro
Today 03:33 PM
144 Posts
Joined Oct 2013
duthehustle93
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Today 03:33 PM
144 Posts
I dried all my sunlu filament before use after reading the comments, so I'm not sure if it prints bad out of the box. However, after drying, this stuff prints great and the appearance and durability of the finished print is just as good as premium filament brands. If I didn't just buy 4 rolls at $40, I'd be all over this. Great deal for solid filament. I'm running an older prusa i3 mk2.
Pro
Today 03:37 PM
144 Posts
Joined Oct 2013
duthehustle93
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Today 03:37 PM
144 Posts
Quote from Simplykind :
Any recommendation on a cheap yet usefull 4 spool dryer? Or would you only need a single or double and just dry occasionally?

I think it depends on how humid your environment is, but I dry 1 or 2 rolls at a time, and vacuum seal them for long term (>6 months) storage, or if I plan on using it within a few months I just store them in a gallon ziplock back and they're fine. I live in SoCal which is fairly dry, but my experience is unless your printing nylon or other filaments that love absorbing moisture, people oversell the need for constantly drying your filament. IMO, dry it once, and store it well. I use a food dehydrator… I found one on marketplace that I modified to hold 2 rolls of filament. I got it for like $5 and the PO used it for making beef jerky.
Today 03:50 PM
8 Posts
Joined Nov 2024
stingy-cheapskateToday 03:50 PM
8 Posts
Quote from JollyReward8938 :
Make sure to dry this stuff before use
I saw this video from a filament manufacturer recently. It mentioned most "drying" people do at home is actually "annealing" and thereby raising the hardness of the plastic. This will cause it to print better because it'll tolerate the excessively high nozzle temperature better. The real fix is to print a temperature tower and tune the nozzle temperature lower. Water absorption into the plastic actually breaks the molecular bonds so drying doesn't do anything to fix it. You need a reflowing agent mixed into the plastic to fix water absorption. The only exception to this is Nylon, which acts as a literal sponge.

EDIT: The video states that PLA and PETG have such negligible water absorption properties that you can basically ignore it. Excessive nozzle temperature causing stringing is the main culprit that people attribute to water absorption.

Check it out. I thought it was super insightful. https://youtu.be/A3H1oFVpUMk

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Today 04:09 PM
199 Posts
Joined Mar 2023
PantherCat1Today 04:09 PM
199 Posts
Quote from stingy-cheapskate :
I saw this video from a filament manufacturer recently. It mentioned most "drying" people do at home is actually "annealing" and thereby raising the hardness of the plastic. This will cause it to print better because it'll tolerate the excessively high nozzle temperature better. The real fix is to print a temperature tower and tune the nozzle temperature lower. Water absorption into the plastic actually breaks the molecular bonds so drying doesn't do anything to fix it. You need a reflowing agent mixed into the plastic to fix water absorption. The only exception to this is Nylon, which acts as a literal sponge.

Check it out. I thought it was super insightful. https://youtu.be/A3H1oFVpUMk

So are you saying to never let humidity hit your filiment in the first place because once that happens it will have broken molecular bonds?
Original Poster
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gabe23111Today 04:14 PM
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Quote from Simplykind :
Any recommendation on a cheap yet usefull 4 spool dryer? Or would you only need a single or double and just dry occasionally?
If only drying occasionally, I don't think you need a 4 spool dryer. I have the Sunlu S4, Creality space pi x 4, Polydryer & just got the Sunlu AMS Heater. The S4 and Creality are a bit redundant, but the Creality reaches higher temps which I need for some of my filament and bought that one afterwards.


I rarely dry more than one or maybe two rolls at a time and it's just easier to use my Polydryer (dries one spool) most of the time for me. If you do pick up a dryer and ever plan on printing some specialty filaments like Nylon, make sure to get one that will hit the temps you need. I think most go to 70 degrees and while you could dry nylon at that temp, it will take a long time.


Some people use a four spool dryer to keep the filament in there and print directly from the dryer, if the filament + environment requires it. Some filaments pick up moisture pretty quickly.
Today 04:47 PM
8 Posts
Joined Nov 2024
stingy-cheapskateToday 04:47 PM
8 Posts
Quote from PantherCat1 :

So are you saying to never let humidity hit your filiment in the first place because once that happens it will have broken molecular bonds?
Not exactly. The video states that PLA and PETG have such negligible water absorption properties that you can basically ignore it. Excessive nozzle temperature causing stringing is the main culprit that people attribute to water absorption.
Today 05:31 PM
283 Posts
Joined Jan 2008
ws2112Today 05:31 PM
283 Posts
My experience has not been good with sunlu petg. All 4 spools that got from Amazon exhibit stringing, and constant clogging even after 8hrs of drying in the my Anycubic AMS. Whereas, the kingroon spools that I had in the same AMS (2 sunlu & 2 kingroon), worked fine after drying. I also have sunlu matte pla, silk, their sister brand jayo matte and pla+, none of them has clogging issues. But for the sunlu petg spools, they just clog constantly.

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