How many factories are in the developed world and have these high standards. I live in China and work in the area of plastics recycling and I can tell you right now that many factories are not meeting standards and there is no “formal” recycling system in place. Since the plastic import ban (which btw makes localised solutions even more important) this is beginning to change in more economically thriving areas of the country e.g. Shanghai, Shenzhen etc. but there is a lot of work to do. Note: Very good and highly developed factories do exist in China and if navigated correctly it is a wonderful place to produce.

On another note, the above comments in this section prove exactly what is wrong with the sustainability community, people spend so much time talking about what’s better or worse that no one actually does anything. Emissions in X vs. emissions in Y. Frankly, no one cares about emissions and the big companies and starts ups that use these materials don’t wait around calculating if one options emits 0.00001 CO2e than another. They start, the fail, they redo, they prototype and the achieve success. That’s why I love precious plastics, they have launched a community and I guarantee the product in 10 years will be so much more advanced than the current MVP. If he had sat around having conversations like the above he would probably still be calculating the lifecycle analysis and debating the difference between boat vs. truck logistics costs to the environment….. but I guess a lot of people are paid to chat and not to do.

MarketBeat keeps track of Wall Street's top-rated and best performing research analysts and the stocks they recommend to their clients on a daily basis. MarketBeat has identified the five stocks that top analysts are quietly whispering to their clients to buy now before the broader market catches on... and Core Molding Technologies wasn't on the list.

Once you’ve designed your mold on the computer, you need to turn it into a physical object. If you’ve got a CNC capable of milling aluminum then you’re all set, but if not, you’ll need to outsource it. [Precious Plastic] found somebody to mill the molds through 3DHubs, though they mention in the video that asking around at local machine shops isn’t a bad idea either.

First, let me say, this does not in any way mean I am against the idea. I love the concept of encouraging individuals to make more stuff themselves. I very much think that encouraging making over consumerism will give us a much more creative, knowledgeable and self sufficient population that ultimately will do greater things and make a better world.

Best bet is to gather a bunch of them and drop them off in the entryway of your nearest Wal-mart. They have a collection bin.

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Hedge funds and other institutional investors have recently bought and sold shares of the company. BNP Paribas Financial Markets grew its position in Core Molding Technologies by 4.9% in the 1st quarter. BNP Paribas Financial Markets now owns 12,593 shares of the industrial products company's stock worth $238,000 after purchasing an additional 593 shares during the last quarter. Rhumbline Advisers grew its position in Core Molding Technologies by 8.4% in the 2nd quarter. Rhumbline Advisers now owns 11,174 shares of the industrial products company's stock worth $178,000 after purchasing an additional 866 shares during the last quarter. National Bank of Canada FI acquired a new stake in Core Molding Technologies in the 4th quarter worth $27,000. Ashton Thomas Private Wealth LLC acquired a new stake in Core Molding Technologies in the 2nd quarter worth $27,000. Finally, Bank of New York Mellon Corp grew its position in Core Molding Technologies by 5.3% in the 2nd quarter. Bank of New York Mellon Corp now owns 36,724 shares of the industrial products company's stock worth $585,000 after purchasing an additional 1,856 shares during the last quarter. 58.79% of the stock is currently owned by institutional investors and hedge funds.

With the mold completed, all that’s left is to bolt the two sides together and inject the liquid plastic. Here [Precious Plastic] shows off a rather interesting approach where they attach the mold to a contraption that allows them to inject plastic with human power. Probably not something you’d want to do if you’re trying to make thousands of these cases, but it does show that you don’t necessarily need a high tech production facility to make good-looking injection molded parts.

We regularly buy H2O2 for the pool and several other stuff in blue ones (we had also acetone and HCl in blue ones). I have uncolored for water, one also contained H2O2 before. I also have black and orange ones for gasoline. So there seems no color code.

https://hackaday.com/2016/06/11/new-cnc-machine-diy-machinable-wax/ , https://hackaday.com/2017/12/30/fresh-baked-plastic-tiles-for-all/ , https://hackaday.com/2015/02/21/turning-plastic-milk-jugs-into-a-useful-tool/ , https://hackaday.com/2010/08/05/recyclebot-digests-milk-jugs-to-feed-makerbot/

Shares of CMT traded down $0.08 during mid-day trading on Wednesday, hitting $18.00. 55,886 shares of the company's stock were exchanged, compared to its average volume of 46,171. Core Molding Technologies has a twelve month low of $14.64 and a twelve month high of $30.09. The firm has a market cap of $157.68 million, a price-to-earnings ratio of 8.65 and a beta of 1.67. The company has a quick ratio of 1.86, a current ratio of 2.28 and a debt-to-equity ratio of 0.14.

This project reminds us of the tiles made of HDPE plastic with nothing more exotic than what you’d find in the average kitchen. Projects like these really drive home the idea that with the right hardware individuals can turn trash into usable products.

That’s why for a backyard aluminum foundry melting cans you need something to crush many cans together into blocks. That way the metal inside the block will heat and melt with minimal air to oxidize it. Adding to the problem is any leftovers of the contents, especially if still wet. Cleaning and drying lots of pop or beer cans takes lots of time and effort.

In order to reclaim the value of the plastic, it’s often not even useful to collect it, because the collection costs resources. That’s a good way to gauge whether the recycling is worth it: if they pay you money, the material must be worth more than the money. If they demand you to sort/collect/return the items for nothing, it’s probably not worth recycling and should be burned with regular trash.

The greater cost to produce the item then translates into greater energy and resource use as translated through the economy, which means by recycling the object you actually consume more than you save.

None of the above is a big problem for commercial foundries because they use electric arc furnaces with inert gas and synthetic cryolite flux to keep the aluminum from oxidizing.

But… before I can be convinced that home plastic recycling can be a useful tool for helping the environment I would need to have a couple of questions answered. First, how does the energy efficiency of some guy in his garage recycling plastic compare to that of a high volume factory? I suspect it’s pretty poor. Second, how about emissions? Factories (in the developed world) are regulated, regularly inspected and usually employ high tech scrubbing technologies on their emissions. The garage maker who blows air through a box of aquarium charcoal is probably ahead of the curve when it comes to non-professionals.

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We imagine you’ve heard this already, but waste plastic is a problem for the environment. We wrap nearly everything we buy, eat, or drink in plastic packaging, and yet very little of it ends up getting recycled. Worse, it doesn’t take a huge industrial process to melt down a lot of this plastic and reuse it, you can do it at home if you were so inclined. So why aren’t there more localized projects to turn all this plastic trash into usable items?

That’s because, you need to make money to cover the time and upkeep of yourself and the tools. You make that money through the economy. Since the economy is services-based (>80%) it means your efforts are largely not producing new value but consuming it, because the way you make money is by helping other people consume resources.

Separately, StockNews.com upgraded shares of Core Molding Technologies from a "buy" rating to a "strong-buy" rating in a research note on Monday, July 29th.

While Core Molding Technologies currently has a "Buy" rating among analysts, top-rated analysts believe these five stocks are better buys.

Core Molding Technologies, Inc, together with its subsidiaries, operates as a molder of thermoplastic and thermoset structural products. The company offers a range of manufacturing processes that include compression molding of sheet molding compound, resin transfer molding, liquid molding of dicyclopentadiene, spray-up and hand-lay-up, direct long-fiber thermoplastics, and structural foam and structural web injection molding.Recommended StoriesFive stocks we like better than Core Molding Technologies3 Healthcare Dividend Stocks to BuyThis Is the Top Large-Cap Stock Insiders Are BuyingStock Market Sectors: What Are They and How Many Are There? Capitalize on Micron’s 24% Drop—Wall Street Eyes Major UpsideWhat is the Australian Securities Exchange (ASX) Stocks to Take Advantage of Rising Gold Prices→ 10X More Profitable Than Physical Gold? (From Monument Traders Alliance) (Ad)Should you invest $1,000 in Core Molding Technologies right now?Before you consider Core Molding Technologies, you'll want to hear this.MarketBeat keeps track of Wall Street's top-rated and best performing research analysts and the stocks they recommend to their clients on a daily basis. MarketBeat has identified the five stocks that top analysts are quietly whispering to their clients to buy now before the broader market catches on... and Core Molding Technologies wasn't on the list.While Core Molding Technologies currently has a "Buy" rating among analysts, top-rated analysts believe these five stocks are better buys.View The Five Stocks Here Beginner's Guide to Pot Stock InvestingClick the link below and we'll send you MarketBeat's guide to pot stock investing and which pot companies show the most promise. Get This Free Report

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That the question that [Precious Plastic] asks, and by providing a centralized resource for individuals and communities looking to get into the plastic recycling game, they hope to put a dent in the worldwide plastic crisis. One of their latest projects is showing how plastic trash can be turned into functional iPhone cases with small-scale injection molding.

The video after the break goes into intricate detail about the process involved in creating the 3D CAD files necessary to make the injection molds. Even if you don’t plan on recycling milk jugs at home, the information and tips covered in the video are extremely helpful if you’ve ever contemplated having something injection molded. The video even demonstrates a neat feature in SolidWorks that lets you simulate how molten plastic will move through your mold to help check for problem areas.

Also the Aluminium oxides are the same as the raw material used to make it in the first place. If you just chuck all your scrap Aluminium into the smelter it goes through the process much faster using less energy. The purity doesn’t matter that much.

Also, lets not forget the duality of sustainable vs durable. On the one hand you have biodegradable plastics, which wont last hundreds of years if left in the environment, but these are also much more prone to falling appart during heating. And on the other hand you have the plastics that you can recycle, but which will last forever in the scrapheap.

Arguably small scale aluminum recycling has similar drawbacks to plastic recycling w/o virgin material added. Cans/thin sheet are notoriously bad since they have all that surface area to oxidize without some process controls most backyard foundries ignore. It’s just that aluminum impurities are insoluble in the melt making it easier to retain material properties if you’re willing to accept comparatively high waste losses.

Those bags don’t seem very UV stable (tend to go brittle and crumble when left out in the sun), but maybe useful indoors or if kept in a dark area.

One more thing – you can identify the aluminium alloy with an XRF machine (expensive, but labs have them), good luck IDing what the composition of a plastic polymer is :P

“Factories (in the developed world) are regulated, regularly inspected and usually employ high tech scrubbing technologies on their emissions.”

So again, I am all for encouraging people to do this. I just don’t think selling the idea as ‘saving the environment’ is necessarily honest or correct.

Nope. The UK and the rest of the EU has the same color/usage regulations as us. Red for leaded gas, green for unleaded, etc.

The plastic waste have to be sorted, PE, PET, etc. so the right temperature can be used and you don’t mix chlorated plastics in there like Nylon. Undyed PE, like used in plastic Jerry cans and the likes, is quite pure. Black plastics have usually already been recycled once. So the trick is to find the right mix of undyed higrade and lower grade plastic to grt satifactory properties. The problem with plastics, even if they are not heated to more than their recomended temperature for casting, is that some of the polymers breaks up, and the material gets a little more brittle. If a correct amount of virgin material is used and time and temperature is observed, satisfactory results can be achieved.

Core Molding Technologies (NYSEAMERICAN:CMT - Get Free Report) last posted its earnings results on Tuesday, August 6th. The industrial products company reported $0.73 earnings per share (EPS) for the quarter, beating analysts' consensus estimates of $0.42 by $0.31. Core Molding Technologies had a net margin of 5.11% and a return on equity of 12.14%. The business had revenue of $88.74 million for the quarter, compared to analyst estimates of $78.75 million. Equities analysts expect that Core Molding Technologies will post 1.53 EPS for the current fiscal year.

In other Core Molding Technologies news, CEO David L. Duvall sold 11,000 shares of the stock in a transaction that occurred on Tuesday, August 20th. The shares were sold at an average price of $17.94, for a total value of $197,340.00. Following the completion of the sale, the chief executive officer now owns 376,377 shares in the company, valued at approximately $6,752,203.38. The transaction was disclosed in a legal filing with the SEC, which can be accessed through this link. In other Core Molding Technologies news, EVP Renee R. Anderson sold 13,282 shares of the stock in a transaction that occurred on Thursday, August 15th. The shares were sold at an average price of $18.17, for a total value of $241,333.94. Following the completion of the sale, the executive vice president now owns 64,517 shares in the company, valued at approximately $1,172,273.89. The transaction was disclosed in a legal filing with the SEC, which can be accessed through this link. Also, CEO David L. Duvall sold 11,000 shares of the stock in a transaction that occurred on Tuesday, August 20th. The stock was sold at an average price of $17.94, for a total transaction of $197,340.00. Following the completion of the sale, the chief executive officer now owns 376,377 shares of the company's stock, valued at approximately $6,752,203.38. The disclosure for this sale can be found here. In the last 90 days, insiders sold 73,411 shares of company stock worth $1,333,020. 13.10% of the stock is owned by corporate insiders.

There are many problems with plastic recycling. I wanted to make 3D filament from recycling and that is when the problems hit you in the face. 1)Our current system for identifying the type of plastic is totally inadequate. #5 plastic is a wide variety of plastics 2)Unlike Consumer food grade Aluminum, most plastics are blends. The same additives that give plastics some very beneficial properties also cause problems when you try to recycle them. 3)The plastic degrades when you heat it. The additives cause problems when you heat them and as a result you don’t always end up with what you start out with. 4)Outgassing from the heated plastic is a real crap shoot. What chemicals are you subjecting yourself to when you heat these up?

etc etc etc. the jist of most of the articles I’ve seen posted around here is that what you’ll end up with is some pretty inferior stock. if you where concerned about upcycling the materials you’d be doing so at a loss because you’d have to mix in higher quality stock and properly mix it in with the mulch so it blended adequately. with all the inks pigments and general discrepancies between any two shopping bag though you’ll end up with densities that wouldn’t be very good for much of anything- well aside from a plastic mallet made of milk jugs but that’s already covered.

Main reason is, the labor and other expenses going to make an iphone case from scrap are greater than the value of the product.

Core Molding Technologies, Inc. (NYSEAMERICAN:CMT - Get Free Report) was the target of a large decrease in short interest in August. As of August 31st, there was short interest totalling 178,800 shares, a decrease of 7.2% from the August 15th total of 192,700 shares. Currently, 2.3% of the company's shares are short sold. Based on an average trading volume of 42,600 shares, the days-to-cover ratio is currently 4.2 days.

He, that’s me! Thanks for sharing :D Feel free to ask questions here or here: https://davehakkens.nl/community/forums/topic/make-a-plastic-phone-cover-using-cnc-milling/