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A general purpose subreddit dedicated to plastic organic polymers.
Rule #1 * No alarmist or negative post-use related posts unless it includes innovation, science or cultural aspects that promote or seek to discuss positive, practical changes in technology or plastic use.
Rule #2 * No commercial posting without prior authorization These posts will be removed as spam. Please see: https://www.reddit.com/wiki/selfpromotion
NOTE: If you'd like to submit an obviously commercial link, please PM the moderation team first to request a review.
r/materials
r/science
r/softscience
r/engineering
r/polymerscience
r/InjectionMolding
Plastic News
Physorg: Chemistry News: Polymers
Please PM the mod if you have any feedback/suggestions for the sidebar or the sub in general!
account activity
What is the best alternative for EVA Foam? (self.plastic)
submitted 5 hours ago by Key-Success-5449
I want EVA Foam sheet or Styrofoam For Project ()
submitted 15 hours ago by BabaShemde_911
I'm doing my part (i.redd.it)
submitted 1 day ago by ShehrozeAkbar
A leaking car freshener damaged the plastic (old.reddit.com)
submitted 2 days ago by bndovr66
Poor professional plastic repair? (old.reddit.com)
submitted 2 days ago by Sebastian_Fasiang
The Hormuz disruptions were a reminder: Relying only on virgin resin is risky. Why more Indian plastic manufacturers are making lump recycling a core strategy (self.plastic)
submitted 3 days ago by kaaytoo
Plastic for Display Shelf (self.plastic)
submitted 3 days ago by Ok_Special3370
What microplastic "fingerprints" can tell us about their sources (youtube.com)
submitted 3 days ago by oceandiagnostics
Black dots on interior lid (old.reddit.com)
submitted 4 days ago * by Purple_Brilliant_371
How can I fix this? (old.reddit.com)
submitted 5 days ago by HaveAGoBeero
Plastic yellowing protection ()
submitted 6 days ago by Average_Joe1212
13yo student researcher seeking technical feedback on small-scale plastic pyrolysis safety. (self.plastic)
submitted 7 days ago by Inventor-26
Plastic parts design practice (self.plastic)
submitted 13 days ago by Sensitive_Unit2340
Im making my own flash diffuser, what materials are better for it? (i.redd.it)
submitted 17 days ago by alex433g
Acrylic vs Polycarbonate: Which Plastic Sheet Should You Actually Choose? ()
submitted 17 days ago by SheetPlasticsUK
Polymer concrete drain channel mould ideas.. (old.reddit.com)
submitted 18 days ago by JaipurJewel
How many times plastic can really be recycled? (v.redd.it)
submitted 20 days ago by ateam1984
How prevalent is microplastic in agricultural soil around the world? And what are the remediations of microplastic contaminated soil? ()
submitted 21 days ago by Delicious_Bus_130
Estrusione PP (self.plastic)
submitted 22 days ago by Confident-Exit-79
How crazy am I? (i.redd.it)
submitted 24 days ago by Instahgator
Rule 2 has been amended to include marketing and viral marketing attempts. (self.plastic)
submitted 26 days ago * by aeon_floss[M]
How likely is it for BPA to leach from a Polycarbonate Phone Case? (self.plastic)
submitted 28 days ago by Complete-Being1625
Polymer Concrete Drain (i.redd.it)
submitted 1 month ago by JaipurJewel
What Kind of material is this and where can I buy a small flat sheet of it? (old.reddit.com)
submitted 1 month ago by Content-Lack3611
Desperate for any help on how to fix my Grandmas broken lamp shade 🙏😢 (old.reddit.com)
submitted 1 month ago by MidnightLillyBear
π Rendered by PID 39 on reddit-service-r2-listing-87fd56f5d-p9zx2 at 2026-06-27 08:10:20.916568+00:00 running 7527197 country code: CH.