Javier (Singular MARS)
Forum Replies Created
Does anybody have any tips to avoid burning / charring / browning when using the oven? The plastic doesn’t really melt or flow but it gets a bit brown..
I’m launching t-shirts, hoodies and bags too ! check them out: https://singularmars.teemill.com/collection/precious-plastic/
– Made with 100% certified organic cotton,
– made in a factory powered by renewable energy 🙂
– I already donate monthly to PP Patreon + commissions from the Bazar, but I will share part of the profits I make with these products back to the community
– International delivery to many countries (not all sadly)
– I have only designed them, the fulfillment is done by Teemill
– I take requests and can draw more original designs.. let me know!
@flo-2 your message inspired me to make this one! https://singularmars.teemill.com/product/pp-shredder-men-t-shirt/
I’m launching t-shirts, hoodies and bags too ! check them out: https://singularmars.teemill.com/collection/precious-plastic/
And don’t worry, @mattia-io these products are 100% certified organic cotton, made in a factory powered by renewable energy 🙂
I already donate monthly to PP Patreon + commissions from the Bazar, but I will share part of the profits I make with these products back to the community
International delivery to many countries (not all sadly)
I have only designed them, the fulfillment is done by Teemill
I take requests and can draw more original designs.. let me know!
It all depends on your location and the market then !
I work in a machine shop so have easy/cheap access to CNC mill, whereas the welders would charge £50 /h so for me it makes sense to avoid welding! 🙂
Plus I don’t like the design of the 3mm sideplates, many parts, more sanding, hassle to fit together, not robust enough, asymetric..
good thing these are open source and everyone (that knows) can tweak them to their requirements
No problem, I just added the .f3d file to the grabcad model, but with the second one that I’m designing we’d save the 4 square bars, and instead use thicker side plates.. always a tradeoff.. no welding, but CNC required!
@pporg the countersinking of the side plates is something else that requires a quite powerful machine to do. I wasn’t able with industrial drill press or hobby mill/drill press, had to be done with a mill and coolant. Thicker sideplates can be threaded so no need to countersink.
You also don’t need to buy a CNC mill but just outsource that to a machine shop that can do it for you. It will depend of what you have around you obviously or your skills
I’m not worried about ‘skewing’ (if by that you mean the shredder trying to twist respective to the gearbox when there’s a jam?) as both shredder and gearbox are bolted to a 10 mm steel plate that keeps it rigid.
Sure, here you go: https://grabcad.com/library/shredder-not-welded-prototype-1 have a look
that’s the one from the pictures, but I’ll be designing another one in the next few weeks, and building a few units to sell, something like this:
Hey, just to leave this here somewhere.. in case this info is useful to anyone
I’m working on a human powered shredder, hand crank (for now), see link:
Gear reduction is 25:1
Throughput for ABS different thicknesses up to ~4 mm was 0.5 kg/h
Didn’t measure torque but it wasn’t hugely hard to turn.
I made this modification to the design to avoid welding.. but then it needs some precision machining.. use what you have available..
Dave you are dutch and you guys know how to create land if you can’t find one. How about creating land from scratch? A floating structure made of recycled plastic buoys?
There’s a lot of ocean out there waiting to be colonized.. (in an environmentally friendly way..)
Hey Dave, great to see you keep tackling big problems
electric cars are still better overall than petrol, if we switched all the infrastructure we’d be better off.
Other technologies could be cleaner, for example hydrogen. But they require heavy tanks and doesn’t make sense in cars. Will make sense in big shipping boats for example.
Self driving cars will be a massive disruption when they are implemented. The need to own a car will decrease and ‘summon’ a car and pay only for the distance you travel will make more sense and be as convenient as getting a taxi and hopefully as cheap as public transport. The tech is almost there now we need the government support.
This is something I’ve also been thinking about, trying to use what we learned from Precious Plastic to do the same with ‘car waste’ (Precious Cars? :P). All around the world there are car cemeteries with valuable materials sitting there rusting. How could we create a DIY car recycling program? It’s not as ‘easy’ as plastic because it requires a big space to store and process the products.. Maybe car scrap yards run by volunteers or robots.
Pedal powered is great but won’t get you far or fast and in this day an age we want everything right now. If we had all the time in the world yes, if we didn’t have to work so much we could spend more time on this. A pedal powered car, a pedal powered train.. A fleet of cyclist couriers that deliver parcels and letters so effectively get paid to cycle. It’s so weird that people actually PAY to cycle when they go to a gym. (pedal powered shredders..)
Anyway I may be digressing but hopefully it will inspire some ideas, let’s see how we can solve this problem! 🙂
do you know about muzzi cycles? http://www.muzzicycles.com.br/muzzicycles-English/
Also the way you have the 2 wheels on the back I thought it could be interesting to nest a few bikes together? If the 2nd bike has its front wheel on top of the 2 back wheels of the 1st bike, that way you only need one rider and it can transport a few bikes at once. Like detachable tandem
Also check this out: a boat in the Thames in London made out of plastic to collect plastic waste from the river…
Very cool !
Reminds me of the plastiki, does anyone remember it? It was about 10 years ago.. http://static.dezeen.com/uploads/2010/07/dzn_Plastiki-Expedition-boat-by-Exploration-Architecture-for-Adventure-Ecology-6_1000.gif
The forum is very simple and minimalistic but at the same time hard and confusing to navigate. The search button doesn’t work very well, if you’re looking for something in particular, something interesting that you remember seeing a few months ago, it’s hard to find it again.
Every now and then there are very interesting messages that we should find a way to keep track of, it could be just a list of links to make sure we don’t lose them, but something to think for the future would be to have a separate wiki where the best posts, research, or articles get posted. Or a mention of these interesting post on the monthly news? Or improving the search engine?
my feedback 🙂
Hey @siemenb, I started one for a similar project, have a look and maybe it serves as inspiration: https://docs.google.com/document/d/1v2XAgP_fJmx0_-IS46720IO8SzLUf3Tvg3DqNCURtS8/edit
Talking with the organizers we’ve come up with this potential idea: make these ‘medals’/keyrings for people who take part in the walk, make them from recycled plastic injection moulded.
What do you think? any other ideas? anyone who wants to help? (design mould, cnc it or with an injection moulder in the uk?)
Hey everyone ! Thanks a lot for the feedback and the new supporters coming along!
As I want to keep you in the loop, here’s an update on the ‘plasticBUSters’ project.
A first draft of the project concept was shared and with the feedback received it looks like getting a bus would be difficult and a big liability to start with, so a much affordable and softer way to launch this is being explored: no need for a vehicle or permanent workshop. A gazebo to ‘set up camp’ in a public space or panels and counters to set it indoors in rented venues like community halls and similar. Even the machines can be rented initially to make this project cheaper to start with.
Anyway, please click here (http://plastic.singularmars.com/plasticbusters) to have a look at the brochure we’ve prepared and feel free to give us any feedback. If you’d like to help, you’re more than welcome to share it with whoever you think might find it interesting, but more importantly if you have any contacts in councils, organizations, CICs, museums, makerspaces, art schools, etc. Getting their feedback is essential now to know if there’s demand for such a project. If you share it you can keep track of who’s been contacted in our google doc (https://docs.google.com/spreadsheets/d/1pg-t4Yrtf4ZLDBd4ffXNGM7fnov-0uMH0EpYw43LUVo/edit#gid=1231783838) on the tab ‘external contacts’. Please find below the text I’ve been using, feel free to copy or write your own.
“Hello there xxxxxxxxxxx,
I have a project proposal for a national campaign that I’d like to share with you to see if it’s interesting and hopefully get your support.
We are a group of entrepreneurs, artists and above all, environmentalists that have come up with this project for a mobile plastic recycling workshop in the UK, a social enterprise whose goal is to educate people about the problem of plastics, the recycling process and how to make useful things and crafts out of them.
We are finalising the business plan, but wanted to share with you this executive summary that explains the concept. If you could have a look and give us any kind of feedback that’d be very welcome. Please click in the link below:
Feel free to contact me with any questions”
If you don’t share it that’s okay, only if you can spare a minute and want to help ! No worries !
More developments coming soon !!
with what you’re saying I imagine that the plastic may fill the bottom part of the die, solidify, and then more plastic would fill the top side.. you may create those interesting textures from the video
experiment ! 🙂
I had a very similar idea and we’re working on the business plan: https://davehakkens.nl/community/forums/topic/uk-project-to-build-and-run-ppv3-container
also have a look at the map https://map.preciousplastic.com and contact to try and visit workspaces in london
There are some screws in the bazar, but we also have in the UK these people, check them out: http://www.noztek.com/product/replacement-barrel-and-screw/
Good luck and keep us informed !
Mm maybe not really that big, 50 mm may be enough, theoretically:
(Again, not talking from experience, this is how I think it works) You want a section of 80 x 20 mm square, that’s 1600 mm^2 so you’d want a similar area for your circular nozzle. 50 mm diameter is 25 mm radius and the area would be πr^2, 1960 mm^2
That should be just enough, but it will all be down to experiment.
If the nozzle area is bigger than your die, you’ll be pressuring the plastic to pass through a smaller gap, and creating some pressure, which may give you the texture dave shows in the beams video, which looks like lava flowing and stretching. This may be what you want
On the other hand if your nozzle area is smaller than your die, then the plastic fills the die only partially and if the die is not very deep you might end up with a plank like 70 x 15 mm
If anyone who’s tried can confirm this.. 😛
I don’t speak from experience cause I haven’t tried this yet, but I think extruding a beam inside a whole length of steel puts a lot of pressure in the motor which is not necessary.
If you have a look at how it’s done at an industrial scale, the tool, the mould with the shape that you want to get, it’s only a few centimeters long, and then you let the beam cool with air or water, using rollers if needed to keep it straight. See here: https://www.youtube.com/watch?v=smXycgOT8ok
But let it fill an entire few meters of steel tube must put a lot of stress in the system, is basically like a few meters long injection moulding !
pictures not uploading, see here:
If you’re using imperial (which by the way should be erased from the face of the earth :P) then keep it consistent and use the hex shaft and any other dimensions in imperial, not mm. i.e, the bearings could be imperial too (3/4″?) instead of 20 mm.
If you can export the 3d files to .stp or .iges, they are more standard file types so that other people can open the design
There are some interferences between the sideplates, something not aligned correctly, there’s a difference of 0.1 mm between the tabs (see picture)
did a 2D drawing of the shaft as it is but may need some revision. As standard I’d machine it with a keyseat for a key, a plain coupling will slip.
see drawing attached or download pdf here:
good work !! thanks for sharing olivier
Hey @khalidkhames thanks for your enthusiasm and good luck,
but I’d be very worried about this kind of thing:
When you mix unknown plastics plus other elements like dirt, you’ll be making something that will be even harder to recycle in the future, when it’s life cycle has ended.
It’s like with earthships, they look cool, they fill tyres with dirt, walls with glass bottles, etc. And you’re making a difference in the present as you’re recycling materials and given them an use, but what will happen when they demolish the house? How to recycle all that mixed stuff? it’s even harder.
I’d suggest to get in touch with https://wasteaid.org.uk/toolkit/ I have a contact there, they do something similar in developing countries
Also see the uk company http://www.plaswoodgroup.com/ they make cool planks of plastic, but only from one type of plastic, that’d keep it fully recyclable.