I did this fairly recently with some heart shaped silicone chocolate moulds, made them in to really pretty necklaces for my girlfriend. A few tips -firstly your temperature is way too high! 205c is the temp needed to push through a nozzle, but I used about 100c for 40-50 minutes and it melted fine - NO BUBBLES! It's not a race. Also, you don't need any oil. I keep my plastic waste separated by colour, I think it looks much nicer when it's only 2-3 colours.

Something I only learned very recently - spray oils contain dimethyl silicon (anti-foaming) that can break down at least some silicone rubbers. Check your molds to see if they start getting sticky after a while. You could always use plain bottled oil with a paper towel if you have issues. Cool video!

I have to say. This is one of the best videos for recycling waste pla that I’ve seen. Great job.

Just ordered the LEGO molds and a $25 toaster oven. Can’t wait thanks again.

Loved those time lapses! I’m definitely going to save my waste!

I haven’t used my 3D pen yet. I love that it can be recycled like this!!! I can make things as gifts this way or make something for my daughter. Thanks!!!

Finally I can do something with all the waste that I can't bring myself to throw out! Brilliant and thanks for doing all the testing too 👍

Loved this video. The time lapses are amazingly relaxing to watch and great idea too.

Great tip! Thanks.

Life hack for 3d pens: if u cant get a wood burner just use the end of your 3d pen with out dispersing any filament the tip it hot enough to smooth out the plastic.

I have been 3d printing for almost a year. What a great way to use all my pla. Something to think about I saw a KZfaq video on making silicone molds. Thanks for the great video.

Ive n Been 3d penning for a couple of years now and ive never thought to try this with my waste. I love this, defo some fridge magnets gonna be appearing in my furture now. Thanks for all the great vids, huge fan!!!

When smashing the pieces down, the first thing that comes to mind is... Will it Blend?

I always keeping filment scraps, but i dont know why, and this what i saw in video best way to use it! Thanks!

Well this did not dissapoint and them time-lapse WOW this is amazing i need to try this. Great work mate as always really want to try sculpting a solid block.

Awesome to know i can repurpose failed/ test print filament ,btw I just got into 3d making , got a 3d pen a few days ago for my birthday and i must say your videos have been verry helpful! :)

I swear the first time I heard you say "flush cutter" I thought you said "flesh cutter" and was like "what?!"

Hi, thanks for the video. I just bought a 3d pen 1 week ago. 😀

Awesome! ^^

Nice technique. I am curious tho if you can eliminate the bubbles by shredding the plastic into powder with a blender to cover more density inside the form.

Why not use a small food processor that has a coffee bean or whole nut setting to finely grind the waste into a semi fine texture. For me coffee bean setting works great to create a fine texture with less air. You can tamp the fibers too in a mold. I also seperate my colors as best as I can. But I rarely use multiple colors. I prefer to paint on a neutral color. I also use 3d doodler pro pen.

These videos are very inspiring! You might find it useful to build a paper hopper above the cavity of the mold to hold extra filament waste chips. Have you ever used a household iron to smooth larger flat areas?

This channel is underrated man you deserve more views and subs. I watch all of you're videos

Really amazing you know

Thanks! All I can say is BLAAAAAAAADE!

Great video

would it be okay to do this with ABS filament?

I think if you trim the material even smaller, less bubble will be made.

If you were to use a blender or grinder of some kind to break the waste into smell pellets I bet you could pack alot more into each mould, perhaps have less air bubbles

I wonder if starting with a small amount of plastic in the mold would make it easier for the bubbles to escape, then adding more and melting again.

You are really a motivation to others

Nice Video, its good to know that PLA can be recycled like this, just a thought to try and stop the bubbling, try a smithing approach, melt the PLA down into a melting pot and pour it into the moulds?

Amazing 👏 where did you get those star wars mods

it's really better than throwing it in the trash

u should have at least 1 million subs you are doing great so far i’ll try this technique when i will get a 3d pen😞

I already have a dedicated toaster oven for my polymer clay work... and well, that's just another form of plastic, right? I've also been keeping the scraps and shreds of not only my 3D pen, but my less -than-a-month-old 3D printer as well. Hmm... and I already have and know how to use oven-safe mold putty... Oh the ideas, the things I can play with... =broad grin=

I usually just use the leftovers for a simple skeleton

The only reason my mom bought a 3D pen is cuz I need to use it for school😅 but I did not know how to use it and your video taught me a lot and now I'm excited to make more the things with it. Thanks!

Nice video! Yeah, I honestly wouldn't feel comfortable mixing food and plastic either... I just don't like it lol

the first darth vader has eyebrows

What I do with my 3D pen waist is if I have a hole and I could take some of it and then just melt it onto that hole using the tip of my pen

I just want to say when you use things that small there is going to be a lot of air inbetween the pieces

cool

Haha i also keep all my 3d pen waste and just melt it with a wood burning tool

Maybe could be done with hdpe plastics

👍

I don't have a oven☹️☹️

😍

Отлично! Теперь знаю куда деть отходы. К сожалению мне неведомо то где взять эти самые формы, и что за спрей ты используешь. Сообщи пожалуйста где взять формы и спрей? Спасибо за сотрудничество. К сожалению из за незнания языка мне непонятно ни одно сказанное слово. Пиши пожалцста на русском и гралри ро пусски. Мы не враги вам....

consider melting down the plastic with acetone instead of heat.

it looks like a cheese. good dea~^^

I save mine. Those coils weren't to small for 3d pen. And your going to make me, to make a vid.

use a cheap coffe grinder dude

From garbage to molded garbage ;)