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plastic
Plastics are a wide range of synthetic or semi-synthetic organic compounds that are malleable and so can be molded into solid objects.
Plasticity is the general property of all materials which can deform irreversibly without breaking but, in the class of moldable polymers, this occurs to such a degree that their actual name derives from this specific ability.
Plastics are typically organic polymers of high molecular mass and often contain other substances. They are usually synthetic, most commonly derived from petrochemicals, however, an array of variants are made from renewable materials such as polylactic acid from corn or cellulosics from cotton linters.Due to their low cost, ease of manufacture, versatility, and imperviousness to water, plastics are used in a multitude of products of different scale, including paper clips and spacecraft. They have prevailed over traditional materials, such as wood, stone, horn and bone, leather, metal, glass, and ceramic, in some products previously left to natural materials.
In developed economies, about a third of plastic is used in packaging and roughly the same in buildings in applications such as piping, plumbing or vinyl siding. Other uses include automobiles (up to 20% plastic), furniture, and toys. In the developing world, the applications of plastic may differ—42% of India's consumption is used in packaging. Worldwide, about 50 kg of plastic is produced annually per person, with production doubling every ten years.
Plastics have many uses in the medical field as well, with the introduction of polymer implants and other medical devices derived at least partially from plastic. The field of plastic surgery is not named for use of plastic materials, but rather the meaning of the word plasticity, with regard to the reshaping of flesh.
The world's first fully synthetic plastic was bakelite, invented in New York in 1907, by Leo Baekeland who coined the term 'plastics'. Many chemists have contributed to the materials science of plastics, including Nobel laureate Hermann Staudinger who has been called "the father of polymer chemistry" and Herman Mark, known as "the father of polymer physics".The success and dominance of plastics starting in the early 20th century led to environmental concerns regarding its slow decomposition rate after being discarded as trash due to its composition of large molecules. Toward the end of the century, one approach to this problem was met with wide efforts toward recycling.
Hello-
I don't remember where or why I ended up with these. I think I was looking hard at a Shrike (which never happened), but I digress.
Perfect LARPing accessory for yourself or squad (Real steel or airsoft). I'd like to say you could clean them out and drink from them at your next Keg...
First their was the zip .22. Widely proclaimed to be the worst gun every made.
Then they made the thunderstruck which made the top five of worst guns available for many reviewers.
Then they made the switchback which is a zimak pock marked piece of utter bubblegum.
Now this. Can you say plastic...
First there was the zip .22. Widely proclaimed to be the worst gun ever made.
Then they made the thunderstruck which made the top five of worst guns available for many reviewers.
Then they made the switchback which is a zimak pock-marked piece of utter bubblegum.
Now this. Can you say plastic...
I have the following for sale.
Never used them, found ammocans to be more convenient.
$20/set
trade for:
.380acp ammo
.32acp ammo
12ga ammo
.45LC Reloading Components
1911 magazines
5x .223 (or similar sized) 50rnd flip top boxes
and
5x .308 (or similar sized) 20rnd slip top boxes...
If you have upgraded your Benelli M4 handguards, I'd like to buy the OEM plastic ones you removed.
Not interested in M4 clone parts.
Please PM the price and condition.
Thanks
Hello All,
Selling 1000rds of East German 7.62x39 62gr plastic core training rounds in 10rd blister packs (M43UB). This is cool unusual ammo, long out of production. These are all in the original import 10rd blister packs. Very light recoiling. This ammo hasn't been made in a couple decades and...
I have a couple thousand 45ACP brass for reloading. They are in plastic boxes as shown in the picture. 100 pieces per box or 50 pieces per box.
Large Primer. The cases have been polished and are clean.
$89 per 1,000 boxed. FTF cash. Shipping available - you pay actual shipping cost's.
PM if...
I got these in a trade and have never used them. I don't own a Beretta so haven't even tried them on a firearm.
This is the discontinued model and is hard molded plastic vs the newer rubber over mold variety.
Please call rather than pm. I'll consider all trade offers as well but will want trades...
I got these in a trade and have never used them. I don't own a Ruger SP101 so haven't even tried them on a firearm.
This is the discontinued model and is hard molded plastic vs the newer rubber over mold variety.
Please call rather than pm. I'll consider all trade offers as well but will want...
Moving forward with technology I guess.
I introduce the bolt action of the future.
I can see this taking off if it works really well.
https://www.thefirearmblog.com/blog/2023/02/17/hera-arms-h6/