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frontpagegabe23111 posted Oct 30, 2025 01:55 PM
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frontpagegabe23111 posted Oct 30, 2025 01:55 PM

4-Pack 1kg SUNLU PETG 1.75mm 3D Printer Filament Spool Bundle (Black)

+ Free S/H

$36

$47

23% off
Amazon
32 Comments 11,121 Views
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Deal Details
SUNLU Industry via Amazon has 4-Pack 1kg SUNLU PETG 1.75mm 3D Printer Filament Spool Bundle (Black) on sale for $39.99 - Extra 10% Off ($4) (automatically applied at checkout) = $35.99. Shipping is free.

Thanks to community member gabe23111 for finding this deal

Note, product will be sold by SUNLU Industry and fulfilled by Amazon.

Subscribe & Save is available as an alternative shipping option.

About the Product
  • Strong Layer Adhesion
  • Smooth Prints/Toughness
  • High Impact Strength Prints
  • Robust Durability
  • Less Stringing/No Blocking

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this bundle is roughly $8.99/spool (23.41% savings); higher quality/minimizing stringing printing
  • About the Deal
    • Compatible in both PLA and ABS 3D printing w/ recommended snozzle temperature of 240-260°C, bed temperature of 60-70°C, printing speed of 50-200mm/s
    • Pricing/discount is available only in the black colorway
    • Product is eligible for refund/replacement within 30-days of purchase
    • Offer valid while additional savings/supplies last
  • Additional Details

Original Post

Written by gabe23111
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
SUNLU Industry via Amazon has 4-Pack 1kg SUNLU PETG 1.75mm 3D Printer Filament Spool Bundle (Black) on sale for $39.99 - Extra 10% Off ($4) (automatically applied at checkout) = $35.99. Shipping is free.

Thanks to community member gabe23111 for finding this deal

Note, product will be sold by SUNLU Industry and fulfilled by Amazon.

Subscribe & Save is available as an alternative shipping option.

About the Product
  • Strong Layer Adhesion
  • Smooth Prints/Toughness
  • High Impact Strength Prints
  • Robust Durability
  • Less Stringing/No Blocking

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this bundle is roughly $8.99/spool (23.41% savings); higher quality/minimizing stringing printing
  • About the Deal
    • Compatible in both PLA and ABS 3D printing w/ recommended snozzle temperature of 240-260°C, bed temperature of 60-70°C, printing speed of 50-200mm/s
    • Pricing/discount is available only in the black colorway
    • Product is eligible for refund/replacement within 30-days of purchase
    • Offer valid while additional savings/supplies last
  • Additional Details

Original Post

Written by gabe23111

Community Voting

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Top Comments

stingy-cheapskate
9 Posts
10 Reputation
PushPlastics, a US-based filament manufacturer, gave a tour of their facility and did a Q&A. 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. They mentioned that running filament through a dryer does make it print better, but not because it removed the moisture. 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?t=58
NickB3364
1457 Posts
883 Reputation
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.

32 Comments

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Oct 30, 2025 01:57 PM
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TekkenLord
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Oct 30, 2025 01:57 PM
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Is this official Gundam product?
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Oct 30, 2025 02:15 PM
56 Posts
Joined Apr 2021
JollyReward8938Oct 30, 2025 02:15 PM
56 Posts
Make sure to dry this stuff before use
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Oct 30, 2025 02:18 PM
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NickB3364Oct 30, 2025 02:18 PM
1,457 Posts

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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.
2
Oct 30, 2025 03:32 PM
377 Posts
Joined Dec 2007
SimplykindOct 30, 2025 03:32 PM
377 Posts
Any recommendation on a cheap yet usefull 4 spool dryer? Or would you only need a single or double and just dry occasionally?
1
Oct 30, 2025 03:33 PM
147 Posts
Joined Oct 2013
duthehustle93Oct 30, 2025 03:33 PM
147 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.
Oct 30, 2025 03:37 PM
147 Posts
Joined Oct 2013
duthehustle93Oct 30, 2025 03:37 PM
147 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.
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Oct 30, 2025 03:50 PM
9 Posts
Joined Nov 2024
stingy-cheapskateOct 30, 2025 03:50 PM
9 Posts

Our community has rated this post as helpful. If you agree, why not thank stingy-cheapskate

Quote from JollyReward8938 :
Make sure to dry this stuff before use
PushPlastics, a US-based filament manufacturer, gave a tour of their facility and did a Q&A. 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. They mentioned that running filament through a dryer does make it print better, but not because it removed the moisture. 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?t=58
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Oct 30, 2025 04:09 PM
269 Posts
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PantherCat1Oct 30, 2025 04:09 PM
269 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?
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Oct 30, 2025 04:14 PM
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gabe23111Oct 30, 2025 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.
Oct 30, 2025 04:47 PM
9 Posts
Joined Nov 2024
stingy-cheapskateOct 30, 2025 04:47 PM
9 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.
1
Oct 30, 2025 05:31 PM
291 Posts
Joined Jan 2008
ws2112Oct 30, 2025 05:31 PM
291 Posts

Our community has rated this post as helpful. If you agree, why not thank ws2112

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.
1
Oct 30, 2025 07:59 PM
269 Posts
Joined Mar 2023
PantherCat1Oct 30, 2025 07:59 PM
269 Posts
Quote from stingy-cheapskate :
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.
Got it. So experiment with the nozzle temperature with this brand petg in order to get good print.
Oct 30, 2025 08:06 PM
1,009 Posts
Joined Jul 2007
zachary80Oct 30, 2025 08:06 PM
1,009 Posts
Is this roughly as strong as regular PETG? My experience with PLA is that the matte versions' prints are substantially more fragile.
1
Oct 30, 2025 09:12 PM
730 Posts
Joined Mar 2006
tyggerOct 30, 2025 09:12 PM
730 Posts
Quote from JollyReward8938 :
Make sure to dry this stuff before use
Are you referring specifically to Sunlu brand petg or all petg?

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Oct 30, 2025 09:29 PM
574 Posts
Joined Oct 2017
MyDogSassyOct 30, 2025 09:29 PM
574 Posts
Quote from tygger :
Are you referring specifically to Sunlu brand petg or all petg?
You should dry all your petg, it absorbs humidity and doesn't melt very good when it's humid.
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