Thanks for compliment about quality, that’s what I try to do, but it is quiet hard to get something which is not only nice looking but on what you can also rely on. Hopefully, it should happend soon 😉
I agree with you on books, you need to document first. And you need to try also, as most of the documentation comes for industrial…[Read more]
As it is a comment I regularly have, here is my point of view on the subject :
Fins are not a single use product or assimilate, you barely broke them, and if you do, it is generally in water, which means that regarless of the way you built it, it is a waste, so it is best to build them as strong as possible.
Currently, they are made that way,…[Read more]
I didn’t properly checked, but it looks like there is no immediate damage visible. It might cause a premature wear of the blade I guess, which imply more maintenance or differente steel type.
There was some great improvements these two weeks. I figure out a better method to mix PP and fiber glass together :
1- Shred pp
2- Shred fiber glass (with scisor before finding a better solution) – average lengh around 10mm
3- Mix it together
4- Extrude this mix
5- Shred it again
6- Inject this new mix !
It doesn’t cause any trouble duri…[Read more]
Some new testing during christmas vacation !
– 270, 280 & 300°C : seems to inject quiet well even at 270°C but need more speed than PP tho.
– The bright sound of PS make the fins feel cheaper will in hand
– Doesn’t really change the flexibility, still far too flex
– 280°C : not fully injected, not brittle
– 290 & 300°C : not fully inj…[Read more]
I started fine tuning of the injection to find the right paramteres, some parts of the fins are very thin and then tricky to inject.
First trial on top of the picture with HDPE :
– 200°C for the rose one : absolutly not fully injected + cold cut on the jonction point.
– 270°C for the two yellows : fully injected but still this cold cut
Then I w…[Read more]
I was also thinking about injecting the plastic around the blade, but I somehow find it less esthetical. I didn’t think about multiple mold though, that would be a crazy idea, I might rethink it 🙂
To continue on my path to surfboard products, I will try to produce some surfboard fins. I will go for a thruster set, as they are the most comon ones and also the smaller (more or less) so they take less strain.
I built a first mould of the central fin with V4 workspace CNC. There is two injection points as my first was that as this mould in…[Read more]
With my friend knifes maker (@rougeforge) we decided to try to produce a knife where the handle would me made out of plastic.
To make the first prototype we :
– cut a piece of plastic to the outline of the handle (a bit too big)
– drilled the coresponding holes
– bolted it on the blade with a coupling nut (one bolt on each side, the coupling nut…[Read more]
I recently find my definitive shape, then cut the central par of the mould out of stainless steel. It works far better than with plywood, and nothing get stuck on it.
I am currently preparing a detailed documentation, but you can find under some picture to understand how the mould is built :
As I have some questions from time to time about what we would use the rope for. Basically everything you would use a normal rope !
Here some application already under testing : hanging clothes, lacet, bike luggage rack attachment, dog leash.
Also, we can use the strip directly to make various construction. Here an example on attaching a paddle…[Read more]
A little bit more information on how the ropes are done.
First GIF :
Frist of all you must obtain some strip out of a PET bottle. As said on the post above, the thiner the strip is the better outcome you will get. Also using ungrooved bottle simplify the process. Out current cutting maching is a cutter blade placed on top of a calibrated cut on a…[Read more]
Hi guys !
Yann here, I already posted on “Finding a solution for PET” topic, but as the rope making takes a lot of experiement by itself, we decided to create a separate topic. So this part is a copy/paste from last one, and I will a some new imformation shortly !
First there is some parameters that are mandatory during the process :
– Keep e…[Read more]
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