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dedicated
23/07/2019 at 20:41
0

yes, that’s a tricky one; please create a fixture to simulate the end position and tie them up. I didn’t cover this particular case but here some inspiration.

In reply to: forum software buggy

dedicated
23/07/2019 at 20:39
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@davehakkens, please at least remove personal names; there was no consensus, again.

In reply to: forum software buggy

dedicated
23/07/2019 at 20:35
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@davehakkens, is there any particular reason you still abuse your power and keep violating basic rights like privacy for your own gains ? in case you don’t know; the last time PP Catalonia had layoff 3 people, a number of clients and partners with this kids-play.

It’s also weird you popping up after years and play the police when we do here the most of the user support; at our expense.

I am aware some of you can’t deal with facts but dirty tricks like this, really ?

dedicated
12/07/2019 at 17:47
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@mrking; I had some more thought on this and searching the net told me it’s a pretty complex story. It’s hard to make prediction on this machine(s). I remember from my visits in older textile factories that even those old machines are very sensitive to the yarn you feed them with. It requires an engineer in the field to set this up right. However, it seems that the process is first the creation kind of PET filament and then pull it as seen in the videos (link) through various processes. I’d say for 10000 and 2-3 months labor you could probably build a prove of concept machine but it won’t hold up long nor produce much. So if you could please give some context, budget, location, workforce, etc… eventually I can narrow the options down for you.

dedicated
12/07/2019 at 14:05
1

New cool devices out there

Handheld device to cut plastic like butter
Another handheld device which leaves me speechless for a while

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dedicated
12/07/2019 at 00:25
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that would be great; i tried hard; normally on the lathe this is an easy thing to do but let’s see how this could work without. thanks a lot.

dedicated
11/07/2019 at 19:16
1

good point. It’s not something you can really feel like micro drilling on a lathe but I know that weak welds or improper mounts will just break apart easily already if you have longer screws (good for consistency / beams) and a slight taper angle of 5-10 degree; Nonetheless, the wood auger is normally brutally hard; luckily the barrel keeps it in place I guess. I don’t know the grade of a SDS drill; I think it will hold up enough with this application; clients will tell 🙁
for now I’m considering this only as experiment and I’d say adding at least a taper to 20% of the auger length should improve already the result.

In reply to: Ask Me Anything

dedicated
11/07/2019 at 17:51
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Why you don’t just grab the rest of the money, buy a nice house, pick up some some awesome training, have a nice and healthy life with a nice wife and some kids whilst the PP community works out the missing parts of the project ? It doesn’t need that much; a good WordPress setup and a few custom addons; some bounties on new & better machines via vouching, PP crowd funding, etc… In latest 10 years you gonna be super happy not to end up in another broke eco – village experiment. You deserve it !

In reply to: V4 Beam Production

dedicated
10/07/2019 at 20:10
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@timslab; you have any recommendation for the v4 screw parameters (pitch, diameter ,… ) ? I do the next days new footage on how to make extrusions screws as part of the ‘PP CE Academy v4.1 program’ (advanced level); also adding outstanding wood auger hacks to add compression in v3.1 CE. Happy to have some input. Currently I know only of 3-4 Kw 3phase at ~1:40 and a screw diameter of around 3-4 cm. target beams are 5×5 or 8×4 if possible.

thanks in advance

dedicated
10/07/2019 at 16:59
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hi,
thanks for sharing. after having visited a few workspaces/artisanal productions in this regard I also recon here the more weak point is collection and publishing of research data, subject to  collaborative community efforts for further refinement of the process. Apparently there is an increase of competence joining PP worldwide but blocked by lacking tools to interact.
Other than that; are there open tasks or machines missing for this process ? I still have a project untouched in the drawer; called the food shredder from plastic. I am happy to pull this one out; thanks to s2019’s efforts there is light 🙂

good work and thanks again.

dedicated
10/07/2019 at 13:07
1

ah, sorry forgot to add : not sure what the specs of your machine are but for down-scaled version I can recommend the composition below. It can be archived mostly with machine shop cut offs / scrap – yard stuff and enables height adjustments as well re-configuration for plastic injection.
btw, let us know the link to your book; happy to promote it 🙂

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dedicated
10/07/2019 at 12:32
1

the tools required for this machine don’t seem to be much different from the all-time star oxtoolco‘s build. please check his work on the subject.

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dedicated
10/07/2019 at 01:42
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– ‘tackle the plastic pollution’ : no, there are however good efforts since decades to keep at least a few beaches clean and thanks to added awareness coming from PP and other projects, it’s increasing but likely too late. Please let’s not forget that this activity needs a lot of time and resources .. see also recent mentioned papers on recycling & waste management
– ‘onearmy’ : with the chosen design & tooling & promotion efforts, etc.. in place it’s unlikely to fulfil it’s promises in the next years. I am saying this after a careful review of stuff and code as well a few attempts to contribute. Unfortunately the worst sit back is that a traditional app – ECO system has been also denied; enabling skilled engineers to add their magic, in their language,… I am trying to fix this adding this on my own… There are plenty of apps needed: PP search, PP space, PP academy, PP connect, PP explorer, PP coin, PP Workshop and PP Studio (pro version to document research, tutorials, lab work and possibly product documentation); just a few coming to mind.
– make money: also after careful observations, this may apply only to the more skilled and resourceful; My estimate is 1-5 in 1000 can evtl. can make this as full employment. Machine builders may have a little more luck and even though, I consider this a little kamikaze as well, depends on your quality and yield expectations I guess 😉

feel free to correct. i am finishing the dossier (a little more fancy)

dedicated
09/07/2019 at 20:29
1

well, other than that I am happy to see PP Eindhoven recognizes their role in the DIY world and shows better examples using ecological and recycle friendly welds 🙂 Stan is right about; those presses are stupid cheap and easy to mod; for machine builders there is also some basic work done to get this legally sold.

dedicated
08/07/2019 at 17:40
1

Great, thank you. We started compiling a special section on filament meets PP. I don’t know the specifics of PP v4 or PP v5 but we think it’s best to workout a library about reproducible machines & components; independently of the owners of PP have on mind… However, more or less this is the format. You can document it there on this page if you like; it’s the PP vault so your data and work is safe 🙂 PM me for details. Otherwise; we can host a complete a new page for your project, eg: precious-plastic.org/filament-spain ;
besos de cataluña

dedicated
08/07/2019 at 13:08
1

I haven’t send this yet through the simulator and perhaps it’s a stupid idea but thinking longer about, it seems that 90% of the support and addon material for the framework can come from within the PP community, in plastic. The base and side plate(s) as well the legs can be done in plastic but some parts require enforcement sheets of around 2-3 mm thickness. The joinery of the legs to the base plate can be done with M12 ACME threads. That should work at least for the extrusion.

I see 80% in weight reduction as well a lion part of heavy duty tools being removed from the build. The overall price for this machine should also lower by a significant amount; not too much but at least PP can stand better on it’s own and possible proved a few of the project’s points 🙂

dedicated
08/07/2019 at 11:02
1

interesting; thanks for sharing. Can I ask what materials can be recycled with this machines ? thanks again

In reply to: Fiber from PET bottles

dedicated
07/07/2019 at 19:17
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I’m no expert in this either but I know our ocean is filled up with PET and I think whatever the outcome is, it’s going on the list of banned products.

In reply to: Removing labels

dedicated
07/07/2019 at 10:53
1

@timberstar; interesting; evtl. you can get more options by opening a dedicated topic. I’d say a drill-press (always buy them big and old as possible) can be converted in an injection but also into a lathe; otherwise a cheap servo driven 4th axis and a cross slide vise may do the job too:-)

dedicated
07/07/2019 at 10:48
1

thanks all; @friedrich, i will try it out. At the end I’d like to have a complete ready-to go controller (with enclosure) for shredder and extrusion; So yes, if it can be done without a sensor but also without adjusting code (POTs are ok) then fine with me.

dedicated
07/07/2019 at 10:44
1

Here are more papers about. Reminds to speed up ‘PP Explorer’ and ‘PP Search’ 😉

In reply to: Extrusion v3.1

dedicated
06/07/2019 at 19:38
2

the entire procedure of doing an aligned screw mount can be much shorter if the barrel fits in the motor shaft (we use 35 mm); in the picture below I use the motor as rest and just level the end as well the the screw mount block (90 mins) is the same size as the barrel, easy. Next next gen to be evaluated is how to recycle old and larger bearing balls to make a thrust bearing incl. mount from scrap.
see you in a bit.

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In reply to: Project to save nature

dedicated
06/07/2019 at 17:43
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The more I look at the data; recycling isn’t saving the nature; that’s a known fact which should be printed in bold on the front – page; among the other things which also could gain more success for PP and other projects, more suited in this regards ….

A great start would be rather managing global wide events that makes people collecting their trash. I am shocked how rubbish people are even in the western world. Looking at what even more educated and wealthy people eat may also unveil the work ahead to prevent trash happening in the first place; hopeless.

dedicated
06/07/2019 at 16:56
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I think @andyn will be busy for a while finishing the T800. Eventually it can decrypt your text. You can also just write in dutch, please.

In reply to: Removing labels

dedicated
06/07/2019 at 12:52
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@timberstar, @offtopic : Not knowing your budget and I guess you already know but Stan made excellent work in the desktop injection topic which provided enough input for me to create a getting-started page (in progress); aka ‘PP mini workshop’. More or less a drill-press (min. and basic tool ) which can act as injection and a 200-300 $ paper shredder does magic. I don’t know the prices in the UK exactly but I know there is good bang for little buck to get in the stores. Other than that; small toast ovens and a some clamping/20$ vices have also excellent outcomes. Youtube as always covers this entry level very well.

dedicated
06/07/2019 at 08:24
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Excellent channel ‘Applied Science‘, actually one of the best around; In particular a video about corrosion (shredder from mild steel).

please check also : science of roundness and flatness

In reply to: Removing labels

dedicated
05/07/2019 at 22:33
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@s2019 5 more ways

dedicated
05/07/2019 at 19:51
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@s2019, I think i placed a link to the only data we have about in the v3 shredder’s resource section, although the data seems to have little noise. And as far I recon, they are still fighting with flake size, to a degree that comparison isn’t exactly possibly, yet.

dedicated
05/07/2019 at 19:17
1

yeah, I would be interested too. Regarding stall/overtorque signal: after testing my variant against a few inverters I am now switching to an optical encoder too. I couldn’t get a clean signal out of them all, despite I’ve done my best sorting Arduino analogue-reference issues though. Makes the hole thing more generic; a one-for-all solution 🙂

dedicated
05/07/2019 at 16:42
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yeah; the downside is that PET at that size is easy to destroy; our oceans are mainly filled up with PET ..

I think i’ve got an idea how to make it. You could extrude the PET flakes, through a die, then cool it down to a perfect temp to slice it up with ultra sharp knifes like on a lathe; it seems to happen extreme fast. I think the next steps are far more complicated; for this you need a little genius to build a suited machine.

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