Making Recycled HDPE Plastic Bowls
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- Опубліковано 20 лип 2024
- It's been a while since I did an HDPE recycling video, but this is something people have been asking about for a while now.
Here's a method for making recycled plastic bowls. It needs a bit of refinement, but the principle is there. - Навчання та стиль
"...one or two failures along the way.." Sir, if there's one thing I've learned it's that nothing worth doing ever comes along easily. Thanks for the upload!
In the dystopian future all these recycling guys will be kings!
I love this channel so much
This is really helpful. We have made some bowls in our project using HDPE and had similar problems with thin walls. We decided to use different sizes for the inside and outside mould and so the wall was thicker and worked really well. We have plans to make a video of our version of HDPE bowl making.
Finally!!! A GREAT idea of something to make with all the hdpe plastic! I look forward to more of your projects!
Thanks for this! It's nice to see that we can do that with basic household items.
I think that I will make a plastic slab that can either be used to measure oversized letter mail via Canada Post, or a cutting board. The versatility will reach a wider market.
Thanks, this is exactly what I want to do! You have worked out some of the kinks for me!
Very nice ideas keep them coming you have got me interested in recycling HDPE as well Thank you..
Maybe you should use silicone gloves so you can peel it off easier and place it so it doesn't stretch so thin in certain places. Fantastic effort and grit! Keep up the great work!
They would make nice little planters. :)
I like your work.
I’ve made a similar bowl molds as well as billet shapes for boards, gears, and blocks for turning. I install 4 bolts in the wood clamp (heads inset and epoxied) and tighten nuts with fender washers quickly to thickness stops with a gyro cordless screwdriver. Get good results.
can you try leaving the paper on to see how it goes?
Your awesome! Thx for the video. I love what u are doing!
what a great idea, thanks for sharing!
Amazing. It's so great you've managed to find a perfect heater, the toaster does its job perfectly. I hope to find something like that, too. So far I'm only using heat gun, but the results are nowhere near this perfect.
Artificial ice for skating or curling on is made with HDPE. It then has a lubricant sprayed onto it that last until the surface needs to be cleaned.
To join the flat pieces together you use a dovetail joint.
I would love to see more plastic recycling content if you've innovated some new techniques or methods recently!
very awesome, nice work m8
Thank you very much !!!! This helps my school project
Hello I love your videos, they remind me of a time and place where everything I loved was within arms reach, while stress and dysfunction were a very unknown life factor... Thank you for that.
I know you have probably walked away from this project, but might I interject a few changes in your workflow that may help?
1. The non-stick paper that you use, would it be possible to give them a wipe down with the very lightest coating of oil, just enough that the HDPE won't stick to it.
2. Alternately a light dusting of corn starch may give your glove slight anti-stick protection for a second or so while you align the plastic onto the bottom mold.
3. If somehow you could distribute the pressure of the clamps more evenly, in similar fashion as we do the lug nuts on our automobile tires... meaning every clamp directly across from each other, which I know would be almost impossible considering the setting time of the plastic as it normalizes in temperature.
4. If only there were a way to build up the center of the HDPE material, so that when the material is pressed you will have more to extrude down the sides of the bowl from the top, causing less stretch and a thicker more uniform sidewall.
I am no engineer or anything, but I do LOVE projects like this. (and those were just my thoughts)
Thank you again for the videos, they make me very happy, and I learn quite alot from every one of them.
Johnathan Static
You have done well, the best way to learn is by trial and error, the only thing you need to do is not to clamp your mould down to hard, you are right about more plastic just make sure you have an even layer all the way round, you can control this by using a smaller board in this way you can see how evenly the board is clamped, when it is uneven you get thick and thin sides. keep trying, and think outside the box, curling wonds that women use to straiten there hair, if you take the hinge pin out you can use the nonstick faces to join HDPE together, have a think about it and see what you can come up with. ( PS, go bye a hear straightener don't use your misses one, you will never hear the end of it if you do. )
Yes, good effort. Practice makes better as well as lots of patience and perseverance,
There's a Dutch guy who has built a hand operated injection molder for making small parts. It would possibly be able to be upsized to make those bowls quicker.
He cools the mold after injecting with cold water and a rag.
Good idea!
I would like to know how you crushed the plastic. Did you do it manually or with a machine? Could you make a video of that? Do you beliefe that is it possible to use PET Thank you!
Hope you get better soon
You’ve probably shown it in the past but how are you grinding your resin?
nice trick, thank you for recycling
Brilliant!
Im going to use a different plastic so this might *not work for my type of plastic but this is a really great idea. Im going to use the metal containers you use as a mold but Im skipping the pressing part because Im using a more brittle plastic.
Make sure you check the safe melting point of other plastics - melting HDPE is very benign - no fumes are produced at the lower end of the melt range - this is not true for all plastics
With a plaster mold, you could make a set of plates too.
So, I have a question for you on mold release and recycling the prototypes. Would you have to scrub the vegetable oil off first if you want to recycle the first two plastic bowls?
I'd probably just wash it off with dish soap and water - I expect that would be fine.
Try blowing a fan across the top of the bowl to help dissipate the heat and make cooling faster. Just a thought.
Once the HDPE cools in your desired shape, is it fragile? If the bowl is dropped will it shatter? If so, can something be added to the process to make the hdpe material unbreakable?
Raymond Berry once it has fully cooled, its incredibly tough. You couldn't break this bowl with bare hands. It would split somewhere if it was run over by a car, but it would not shatter into many pieces
great work,melting plastic looks like fun..
It's like making confectionery, without the calories
I'm sorry, my English is not good, but it is a very nice project! Very cool. I also try times
You're a bit clumsy but you do have some patience. Keep it up
I am thrilled with your video. ( Sorry for my english)
perfect english?
Maybe a couple hinges joining the plywood ring to the base on one side would reduce the need to clamp both sides. That would speed the time to get the project clamped.
That could work - I think I'd have to extend out the boards so that the hinge action isn't turning the top so much as it meets . If I was going to make a lot of these though, I would probably go for some sort of bayonet arrangement where I press down the top board and give it a slight turn to lock it under some bolts or tabs or something.
So how you doing mate? haven't seen much from you for a while
If you don’t mind me asking...what type of sandwich 🥪 press is that? For example make and model possibly.
It's a brand called cookworks. I don't know much more about it
Brilliant
Great , fantastic.
How much time we should keep the clamps on.?
I keep them on until I feel that it has completely cooled, and then a bit longer. Maybe 20 minutes?
@@AtomicShrimp thanx sir
Thanks verte good
Third time is always the charm.
I read that pyrex glass is better than steel no stick and product comes out shiny
When I do this it sticks to the parchment. Do you suggest a higher quality parchment? My temp is around 150-160° C and its also scorching the paper a little.
The stuff I am using is a woven reusable nonstick baking sheet
Atomic Shrimp thanks for your reply! I bought a higher quality baking paper and it's working perfectly!
Maybe you should make some kind of fast clamping apparatus that can be thighten with a drill. For example you can make something like a pressure chamber has on its rim, those threaded arms.
Anyway, keep up the good work :)
I was thinking of putting slots in the wooden board that engage with overhanging retaining brackets - sort of like a bayonet coupling - so I would just have to press down the board and rotate it to lock it in place.
That's a great idea.
But if you do that, you should make it work the way, the more you twist it, the higher the pressure will be.
It also occurred to me that if I want to make two bowls in one session - I only need one more metal bowl - I can mould the second bowl onto the outside of the top mould for the first - as long as I have clamps big enough to accommodate the extra thickness
But then you gonna need another sandwich toaster, aren't you :)
At the end you will have more bowls, than you need. You can start you own bowl business :)
Anyway, I'm cuirous about how much electricity do you use up for making one bowl?
I reckon the first bowl should have done most of its shrinking by the time the second piece is melted, so maybe the clamp can be taken off for a moment.I did the math on the electricity consumption in the comments on a different video - it cost pennies to run. About 30 pence per hour.
makes me laugh every time you get melted HDPE stuck to your glove haha keep up the good work.
Back when I was doing a lot more of this HDPE recycling, my hands just sort of toughened up and I found that I was able to (briefly) move it about without the gloves at all. It only works if you have dry, callused fingers, and I wouldn't recommend it though.
will defiantly be looking into methods of moving melted plastics without my fingers haha would really like to see more things you can make though. Will be trialing some k mart presses myself soon.
I am saving my plastic for a future project and want to know what is the largest piece you have made? I am looking to make a cylinder about 8 inches in diameter and 12 inches long, I intend to make an apple scratter with it. Any thoughts?
I can melt up to about 500 grammes of plastic this way - the largest piece I've made is a flat plate about 30cm square and 7 or 8mm thick - making large, thick solid pieces is a challenge for me - if I was going to make a cylinder like you describe, I probably wouldn't make it solid - I'd make it from a set of stacked circular plates
Thanks for the info and advice. I may try and find a suitable piece of oak and mill it down. I don't think I will save enough plastic before the apple season.
Simon Farmer: In my town they have a recycling bins(looks like huge dumpsters) where people can dump there plastic bottles, cans, and glass items. That's where I get my HDPE. You might want to ask local restaurants or diners if they would save their bottles for you. Also check out laundromats, people throw away detergent bottles which I find is good HDPE. Good luck, the way people throw things away you should have all of the plastic you need in one day, just a thought.😀😉
Leave parchment paper ON...... do not press. Just hand press. Won’t stick and be slight thicker. Enjoyed video. 7-2020
I would leave the one sheet on when forming . This will peel off when it's cool.??
It will, but I think it will cause the plastic to pucker as it shrinks on cooling
You rock ✌
Have you tried to preheat the bowls?
Yes, but they're pretty thin metal so they have very little thermal mass
What kind of sandwich press do you use
This one is a brand called CookWorks
AtomicShrimp
I am in Canada and found a Toastess at Amazon
What temp do I need
Probably about 150C - at least for HDPE
Very, very nice, this is the idea, RECICLING. Search "Precious Plastic" the channel is "davehakkens" in UA-cam, and find help for the next step.
What kind of paper do you use?
These are nonstick reusable baking sheets - if you search for that, you should find it (it can be bought on a roll I think
👏👏👏👏👏👏👏👏👏👏
would that just be called release paper?
how clever! i love this
Those are sort of nice looking, they remind me of art glass only in plastic and not transparent.
what is the name of that paper?
It's a reusable nonstick baking sheet
I want some
brave!!
Does this stuff smoke even a little bit .
If it is overheated, it will produce fumes that are approximately the same toxicity as burning oil
@@AtomicShrimp thank you for replying back
Seeing that you're using stainless steel bowls, why not try heat gunning the bowls to help with the working time of the HDPE?
I have a little gas camping stove right there in the garage - I was thinking about using that - I am a little cautious that heating them directly may distort them if it isn't really even. I think I need an oven in my workshop
Very
Why not just leave the wax paper on the heated plastic when placing on the metal bowl and form over top of it.
Could do - it will wrinkle and pucker though, and this will imprint marks into to the surface of the plastic
You might pour water on the mould to cool it.
There's another video where I demonstrated that. Rapid cooling causes the HDPE to distort wildly
cant u just put a brick on top?
No - it would just lift it as the plastic contracts - significant clamping force is required
I wonder what the neighbours think.
Why bother with taking off the second sheet of wax paper when you lay the hot plastic over the bowel? seems to me you could save time and just press everything with that wax paper on. Then taking it off when its all done and cool to the touch.
Mike Truby it will wrinkle and leave indentations in the surface of the plastic
Thanks for the reply, i take it you've tried this already? lol
Mike Truby yeah. The nonstick sheets have no elasticity at all so they gather and wrinkle if left on the melted plastic
I enjoy these recycling into useful objects videos but your wobbly table disturbs me
هههههههه .. معلم
For the love of humanity: Do NOT try to use this to make of mold of your private parts! (You know someone in the world will try it - YIKES!)
Dunno, I'm sometimes inclined to think that anyone dumb enough to believe that's a good idea, should be encouraged to try it out.
The scream heard 'round the world. The gene pool needs a bit of cleansing now and then.
what kind of paper are you using?
It's nonstick reusable baking liner