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Hi @ellieewart !
Yes I surfed them exclusivly since one month, and I gave the other to friends and to a surfschool. I got quiet good feedbacks, as they are thin, they are very easy to swim with.
On these handplanes specifically I don’t think this system and handle would work as they are too small. But on longer ones, i should be feasible.
If I somehow understand and agree with some points you raise, I want to add a detail based on my usual paid job (that I want to leave, but this is not the subject).
They spoke about CE certification on the machines, which is mandatory if you want to use them with workers, in a business society. And amongst other boring thing in my previous job, I was in charge on CE certificate for our builded machine (far far bigger than PP machine, but still). You have to make your plan approved by a third part (BV, Lloyds…), then you can then not change them, even just for a small additional drill. The same for construction, that should be done according to specific procedures and controls.
Therefore if using approved plans and builders go a bit outside the open source concept, it is mandatory for CE certificates. In my point of view, both can existing in parallel : open source construction and experimentation for fab-lab & CE built machine for business man with a plan in our world system.
Here is my first batch, to be tested with friends this week-end 🙂
Hi @chelbig, on the top I posted a youtube video, if you go to 1’11, you will see the coupling system doing it’s job.
Also I made a short video about the plastic shredding : https://www.youtube.com/watch?v=hJ-Sz77CdfQ
You will see that it is extremly low, I wanted to use the less energy possible, so this is a 0.22kW motor rotation at 8rpm. Maybe to slow, it would be interesting to see is going 4 time faster would make me shred 4 time faster also ?
I have a second motor, I will do some comparison.
I bought the complete shredder box on the bazar (laser cut parts, axis, bearing & screws). All in stainless steel, for 350€ delivered. So I would not say cheap, but for sure cheaper than if I bought it in a local laser cutter (and I have no acces to a metal turing machine for the axis). For the other element fo the shredder, I managed from a scrap yard.
It is still not finished, but I hope to start shredding plastic at the end of the week, I will post more interesting pictures at this moment.
I finally quit my boring job and I now intend to spend all my time on this project, at least for the following months.
We managed to get install in my father workshop, it is not that big, but 50 square meters will largly do the job, so if some people around Nantes want to come and play with us, just contact me.
We started to assemble the shredder. We then have a motor and a oven to repair, a TIG welding machine to set-up for aluminum, find a way to attache the plastic plates on aluminium beams and seal them (we also have a machine that should weld the plastic, but to be tested).
We want to built a small motor boat for rivers. As an alternative traveling ways in city crossed by rivers or canals. I will open a topic as soon as we start (probably mid of May).
Our fist intent was to built flat and thin sheets with a press to cover an aluminium structure. But this extruded planks seams incredible, almost like wood on the video. Do you know if they made it with PP extruder ? Do you have pictures of the extrusion die ?
Also how the etancheity is achieved ? Normally with wood planks you assemble them wery dry and humidity expense them sealing everything, but I don’t think it would work with plastic planks.
Wow ! This is clearly amazing ! We also want to buit a boat from plastic waste, but on a far smaller scale 🙂
Here if I understood well, the beams are made with melted plastic on a moult, then the pannels are made from flip flop glued together ? Do you add wood somewhere for structure integrity or etancheity ?
Thank you a lot for this topic, with so much information and ideas !
We also plan to start making recylcling plastic plates with the final goal of building a complete boat with it (on an aluminium structure).
I was first thinking of extruding thin panels as done in plastic industry to built sheet (sheet extrusion process).
On your last try, how do you do to be sure to optain the required thickness ? Do you use some kind of wedge to stop the press ? If then, how are you sure the pressure is sufficiant to remove all the bubbles ?
Thank you for your answer !