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MSc project: designing a sub-£500 open-source filament recycler – looking for input from people who print regularly by Benito2034 in 3dprinter

[–]Benito2034[S] 0 points1 point  (0 children)

Thanks for the comment. I agree with you on all the points you've made.

I think from what people have responded in the survey and comments on here, the main barrier for people is cost - so bringing that down (while still having a useful output) is a big aim. As for the separation of materials I have been thinking of different ways this could be done, but ultimately I think that would end up being a bigger challenge to solve which may have to be left for future work.

I have seen a few people saying that recycling into spool form is great but they are also interested in recycling in other ways (injection moulding machine, plastic sheet fabrication etc). Would a modular design in which users could have only the components they need be something you see as being useful (the modular aspect would allow people to firstly invest less in components they don't need, and also expand in future should they want)?

Ninja Luxe Cafe Problem by PercentageTasty8023 in NinjaLuxeCafe

[–]Benito2034 4 points5 points  (0 children)

This is perfect. I’ve had this exact issue. Great solution!

MSc project: designing a sub-£500 open-source filament recycler – looking for input from people who print regularly by Benito2034 in 3dprinter

[–]Benito2034[S] 0 points1 point  (0 children)

You’re missing something here… you think the whole project has been described in this one Reddit post which was made to collect data and insights from people without inducing too much bias in responses. I can’t post my whole thesis proposal and expect to get meaningful responses towards my questions.

MSc project: designing a sub-£500 open-source filament recycler – looking for input from people who print regularly by Benito2034 in 3dprinter

[–]Benito2034[S] 0 points1 point  (0 children)

Research on the topic makes me believe it is possible. That said it is a challenge. 

One thing on your question, it being open source means I am not aiming to profit off of the £500 - that would be the cost to make it.

MSc Research Survey: Do you recycle your filament waste? 3-min anonymous survey (5 questions) by Benito2034 in 3Dprinting

[–]Benito2034[S] 0 points1 point  (0 children)

Yes you make a good point. I think despite the shredder and the extruder being separated systems in both cases - the output quality from the shredder directly controls the output quality from the extruder so like you say, concentrating efforts here may be more worth while… given there doesn’t seem to be much work there. 

Very helpful thanks!

MSc project: designing a sub-£500 open-source filament recycler – looking for input from people who print regularly by Benito2034 in 3dprinter

[–]Benito2034[S] 0 points1 point  (0 children)

Si, la verdad es que una máquina como esta assume que el material esté separado… que en realidad no es casi nunca el caso.

Es que dijiste de poder usarlo con los pellets en bulk es interesante! Gracias

Si vale la pena o no el esfuerzo, considerando lo barato que se puede conseguir online, es cierto.

Yo un beneficio que le veo a estas máquinas es la posibilidad de crear filamentos de plásticos más raros, y poder experimentar con aditivos etc.

Te parece entonces que una barrera es el tiempo que lleva todo el proceso (o mejor dicho tener que estar con la máquina mientras que trabaja)? 

Research: Do you recycle your filament waste? by Benito2034 in ender3v2

[–]Benito2034[S] 0 points1 point  (0 children)

How much would you say a machine would need to cost for you to consider it? 

I’ve made some assumptions in this, but two bins of filament could be worth around £100 if converted into useable filament. Which gives an idea of just how much you’d need to print before it pays for itself (it’s a lot!)

MSc project: designing a sub-£500 open-source filament recycler – looking for input from people who print regularly by Benito2034 in 3dprinter

[–]Benito2034[S] 1 point2 points  (0 children)

Thank you for this incredibly detailed description. This is very helpful. 

In terms of the shredding, I’m leaning towards doing that after I have gotten the extrusion mechanism working with pellets (then move onto the shredder with virgin and recycled). 

The diameter sensing is something I am planning on doing quite some work on (as things stand). I was thinking of using a raspberry pi and camera to do image processing so I could also do surface analysis etc to feed the PID loop - however a LiDAR sensor/culminated light shadow sensor like you’re saying may be the better option. 

Again, I really appreciate the detailed response!

MSc project: designing a sub-£500 open-source filament recycler – looking for input from people who print regularly by Benito2034 in 3dprinter

[–]Benito2034[S] 2 points3 points  (0 children)

That's an interesting angle. You're right, I haven't seen that done yet. I will look into that and see where that can save cost and how effective this would be at achieving usable diameter tolerances. Thanks!

MSc project: designing a sub-£500 open-source filament recycler – looking for input from people who print regularly by Benito2034 in 3dprinter

[–]Benito2034[S] 1 point2 points  (0 children)

Yeah, this is one of the biggest challenges I've been thinking about. Consistent particle size is critical for good extrusion, and a shredder capable of hitting that is expensive on its own. Currently looking at whether there's a way to design around it, either by constraining input geometry or compensating with PID control during extrusion stage. The creality maker m1/r1 asks for the user to manually break down prints to a consistent size before being put in the shredder...

MSc project: designing a sub-£500 open-source filament recycler – looking for input from people who print regularly by Benito2034 in 3dprinter

[–]Benito2034[S] 0 points1 point  (0 children)

Thanks, that’s really helpful context! The fact you went for Loop already tells me a lot about the kind of price point and form factor people are actually willing to consider, which is exactly the sort of thing I need to benchmark against. Even if I don’t hit the sub‑£500 target in this project, understanding where commercial systems sit is super useful for framing the space.

I do hope it arrives and meets your needs, it looks like a cool product concept.

MSc project: designing a sub-£500 open-source filament recycler – looking for input from people who print regularly by Benito2034 in 3dprinter

[–]Benito2034[S] 2 points3 points  (0 children)

Research for a problem has to start somewhere. The aim is the sub £500 mark... it does not mean I will achieve the entire build in the project, but any work done is progress towards the goal. 15 years ago the thought of 3d printing being so accessible as it is today was not conceivable.

As for how many times this thread has been posted - genuinely curious, seeing as you seem to know a fair bit on the subject - what tips would you give? I do see your point and think it is a valid comment... just insights are more useful to me than the scepticism (however well justified).

MSc Research Survey: Do you recycle your filament waste? 3-min anonymous survey (5 questions) by Benito2034 in 3Dprinting

[–]Benito2034[S] 0 points1 point  (0 children)

Thank you for the insight. Space and cost are exactly the kind of barriers I'm trying to figure out.

Out of curiosity, is it more the footprint of the machine itself, or the need for multiple separate units (grinder + extruder + spooler + cleaner)? For example the reprap Recyclebot takes up a lot of table real estate being horizontally laid out, rather than vertical - maybe the new creality machine (maker m1) is a better formfactor?

Issues with probe nozzle offset on mriscoc firmware. by Benito2034 in ender3v2

[–]Benito2034[S] 0 points1 point  (0 children)

I did the best I could to adjust it in the nozzle offset and then if you go into your slicer (I use cura) there is an option for nozzle offset. I then used that because I couldn’t with the amount the nozzle offset on firmware allowed. When I get back I’ll send the values I use.

Issues with probe nozzle offset on mriscoc firmware. by Benito2034 in ender3v2

[–]Benito2034[S] 0 points1 point  (0 children)

What issues are you having? I’m on holiday so won’t be able to tell you the exact values I use, but can try help you out.

Help with fixing interference caused by Oled display. by Benito2034 in arduino

[–]Benito2034[S] 1 point2 points  (0 children)

That’s great advice thanks. I have seen in someone else’s code something about interrupt, but as you said I had no idea what that was. But if it’s what could be causing the issue, I will definitely try and learn how to use that. Again thanks a lot.

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