The drill bit is scraping the pipe surface inside and thus you find the shiny metal pieces in the filament. Just requires an alignment effort and then it should be ok. Great work.

Hey, whether it works or needs improvements is secondary to the fact you are trying to make something. I totally commend you for that. That is quite the undertaking and shows that by using your brain to try stuff out is a really great exercise at growing your knowledge base. Anyone here who criticizes is most likely doing so from their couch or puter chair. "I have not failed. I've just found 10,000 ways that won't work." -Thomas A. Edison

Its really cool seeing these desktop extruders

great vid, here is a good tip on drilling that brass plug. find a drill to same size as the inside, and drill a fraction out, just enough to see a bit of the brass come up the drill bit, this has 2 benefits. 1st it will smooth out the inside and secondly it creates a centre so you can then add the 1.8mm drill bit into the drill and then make your hole from inside the plug/bung as the drill bit will also find its center amd the drill hole will have a micro spiral the right way. hint if you make a few types with bigger and smaller size holes you then can swap/change to suite for the types of plastic, or if a good engineer/metal worker, one could make a nozzle governor

Congratulations on making the filament. Once you have a water bath it will not be sticking anymore. When I worked in a plastic plant we went directly from the extruder to the water bath. Keep on keeping on.

Sometimes it is interesting to put right after the nozzle a small water container to solidify the PET, as it has a fast cooling rate to do so. Then you just hook it up to your winding hardware. Nice project, congrats!

A tip. If you use low expansion foam for windows and doors and place it inside of your fram tubes, you will eliminate the echo. Even loosely stuff the tubes with insulation. Rubber undercoating spray on the outside of the hopper will eliminate some decibels from your auger bit.. hope it helps. Cheers

Great project! Some suggestions, you can ignore if you want to. :-) Put a cooling fan under the hot end, and it will cool of faster and not stick on everything. Also you might want to print a nozzle for the fan that can cool down to filament more efficient. You might want to put the drill bit in the lace and make a short tip on the drill bit and a hole into the inner part of hot end center, not going through. That way your drill bit will not go of center and scratch the tube. The output of the filament could go a bit off center from the center hole you made previous. I don't think it has to go out in the middle.

thank you for the video. can you explain how to make the heat generation ? and how to connect the pid contoller ?

muy interesante video, gracias por transmitirnos tus conocimientos, Saludos desde venezuela

cool video but you probably want to use a larger diameter hole for your extruder nozzel as the plastic cools at a smaller diameter. Awesome work though, I cant wait to try to build one of these.

Hi there, What nozzle hole size have you converged to to optimize speed? Would you recommend going bigger than 1.75mm and pull to the correct diameter or stick with the 1.75mm hole? I was thinking that maybe a bigger hole could increase the production of filament per second. What are your thoughts on this? Thanks

Great video. Any idea about making one of these machines with a porthole die so that it can extract tubing?

Hello, Thanks for this video series. As you very rightly chose the tapered copper bolt because it is tapered, instead of trying to hit the center from the external face with a lathe and drill at 5:30 , I would recommend doing the same but starting drilling from the inside. The tapered angle would guide your drill, also all copper burrs would end up on the outside and can easily be shaved. This serie to build an extruder as a DIY project was done 3 years ago from what I see, with some trials and errors. As much as the venture can be fun, would you consider making a new series going straight to how to build one right from first try, using your lessons learned? Also very interested in the schematics and code used for the controlling electronic for the stepper, heater, and so on.. Thanks!

do you have a video explaining how to ser up the pid temp controller?

can you show the schematics for the pid controller? I am attempting the project and am having trouble hooking multiple band heaters to the pipe and need some assistance..

hi, what is the screw/auger bit speed? we made one, for our mechanical design project..

cool. The filistruder i put together did the same contaminating thing. They say to run a pound of plastic to clean it out and after that should be ok. The inside of the pipe is rough and does get drilled out from the spinning bit that's most likely where the metal shavings come from. Filistruder also sells a super fine stainless steel wire mesh screen that traps the metal but there kinda pricey.

Making Stuff Excellent Job ! What are the characteristics of the engine (power, voltage) ? thank you.

Try extruding vertically instead of horizontally. Down into a cold bath, under a roller and then under and over rollers to change to the horizontal.

Hello, good job! How many watts are needed for a single band heater to reach > 160 °C ? Thanks.

Excelente el diseño, muy buenos los principios utilizados.

I just made a machine similar to this and it looks to me like you're heating band wires are connected to the 1 and 2 posts of your solid state relay. Is that correct.

I worked in a conduit production plant where at the end of the extruder the various sorts of plastic were cooled in a waterbed. At the end of this waterbed was an automatic winding system. It could wind with an adjustable strength. Maybe the next project?

Cana kit UK still in Business and your controller is $69.95 Nice to know we can buy this kit here in the UK great videos many thanks

Beautiful work man. Can you list the electronic components you used and their serial numbers ?

Great!. It is exactly what I was looking for.

Hi, What exactly are the engine features you are using? If you share the speed of rotation and engine power you have set, and so on, I am very happy.

This is an old video... and you are obviously a very knowledgeable man... with the capability to choose, design, and implement every mechanical and electrical aspect of anything you set your mind to.. .. I am inexperienced in this topic... very very much so... I'd like to ask you: why not gravity feed the filament and cool it on the drop as with continuous casting steel? thanks to anyone who'd like to share on the topic... and thanks for sharing your adventure with recycling plastic from the home shop.

Sir pls explain the heating take place and also where we use the heater

I used to work in a factory making plastic rolls and bags. We would start the round extruder which faced vertically and pull it as a 'lump' at the speed of the machine. We would take it up stairs and wind it through a system of rollers. It would loop over the top one and then down through another set of rollers and eventually onto a cardboard roll at ground level. We would then adjust the air pressure inside the ring until the balloon was 'stable' The trash would be rolling onto the first cardboard tube. Once the knife was set to cut one side of the balloon, (if it was going to be a continuous roll). and the plastic was running flat and at correct width we would spin the roller over onto the second roller and discard the trash roll for recycling. The machines operated 24/7 and only stopped when being maintained or if a different colour or size was required.

Was kinda thinking to introduce a mini extruder of this kind on the home built 3dP very intutive

i really want to make this , so did it work?

How far the drill need to stay to the nozzle? and the hole need to be 1.5 to get a 1.75 filament? thanks

you may want try a little lapping compound on the smooth end of your drill bit to increase size of your hole in your nozzle.

tem como vc por a lista dos matérias que usou ?

Hi, I am building this machine, but I have some problems with the heating band. Which did you use?

Hi Bob, Nice video ! I would like to make myself an extruder, but i can't find a good heater... Can you please give me the reference of your heater band ? Thx !

Hi there where do u get the metal and nozzle from bud thanks

how about using compressed air and some small nozzles to create a vortex that both cools and holds the filament from falling on the extruder nozzle?

hi ,it was awesome! Now I want to work on my project, but I do not know what kind of motor (with how much torque) I use. If you help me in this, I've been greatly gratified to you. Thank you for the video.

What is the temperature setting on heating element?

What do you use the filament for?

por donde sale el filamento el orificio de cuanto debe de ser y que clase de motor utilizas

Black specs are from burned plastic that accumulates at tip of drill bit screw. Use the angle grinder to make a sharper tip on the front to make the dead zone as small as possible.

Is the drill bit heated? or is the only thing heated the nozzle, and how strong does the motor need to be, what if I'm using fine powder instead of pellets? Planning on building my own thanks for the info and well done on the video!

You need a bucket of water underneath to cool the plastick so it does not stick. It also helps with consistancy because it's the 0lasticks not cooked off it can change size and go off of 1.75mm

I have a question why a heating are you using a thermocouple and a heating band I made a similar machine I got my auger bit at the flee market too.

how much temperature did you set and which type of plastic did you use

Very smart! I like it! Do not put drill bit in sandblaster because it will dull it. Consider configuring output facing down so that filament will self feed.

Awesome work. Im going to make one.

Specifications of temperature controler?

Hi man. What do you use to heater?

Add a cooling fan or two at the nozzle end, that'll solidify the filament much faster so it won't stick to the table

can someone explain to me why the filament didnt contain air bubble?, since there must be air bubble in the system, right?

Awesome job one thing I'm wondering is how well a drill bit instead of an an auger bit would work

Serious question for those of us that aren't able to build one would you be intrested in making on for someone

Good job. I am thinking to a new kind of it.

Still working after 3 years, have improvements?

Excellent work! Do you think with this setup can be possible inject into a (small) mold? Thanks!

VOCÊ ME DEU MUITAS IDEIAS PARA FAZER UMA DESSAS OBRIGADO

Thank you for your video and could you please tell me the diameter of the nozzle to ensure that the size of the filament is 1.75 mm? Thank you very much

Does the drill auger go all the way to end cap or is there a space?

One heating point isn't good. On the middle of the pipe you can adding second pre-heater with lower temperature than on the die (the best is a 3 point heating 80-120-165°C). The produced material can goes to moving belt, if you change speed of the belt you can control diameter of the filaments. If you pulling material faster you produce a thinner filament.

Which must be the distance between nuzzles inside and the end of the drill

you need a cooling fan as it comes out so it doesn't stick. Also a V channel made from a nonstick material will help too.

Marking staff Very nice video channel Thank you upload video

exactly what engine did you use here

what size of heater band that you use? where can i ordered it online?

What is the price of this small extruder

Great little project. Have you considered making a machine that will recycle/process thin plastic bags. That is the ability to feed them in, melt them into something reusable as a feed stock etc.

can you give me the link where you hand bougth your heat emelent

hello.. nice work done here. please can i have a blueprint of the design and approximate cost estimation in africa?

che plastica usi ?

which motor did you use ? can you put the link? .. can you put the curcuit schematic ?

Great project! , Hi, what is that heater? , please give me idea where can I buy that. Thanks!

From where I can get this machine, price?

Link for heating band, pls 🙏

Specification of motor

how much did it cost

What is the use of that filament...??

Save up all your old milk jugs, chop em up, blitz them in a blender and run that through the 'struder. That'll probably clear out any crap left in the pipe. Coming along nicely! :D

Hey what kind of heater is that? cant seem to find something similar from google searching, thanks for the video

Awesome video! Thanks so much for making this!

wicked man

Have you tried using any of your homemade filament as weedeater line yet?

at about 5:40 you tried to use the center finding drill bit on your bench top lathe... but i didn't understand why the center marking attempt failed? i'm very new to making things, appreciate any teachings from all the generosity from you guys! Thanks.

Mastercraft vernier ! Hi from a Canadian !

Try adding a shallow water bath beneath the filament as it's extruded. If nothing else it'll prevent sticking to your table.

sir can u provide me the material required material for this machine this one is the piece for which i was searching for

Cool video! People like you are pioneers in at home filament recycling which is truly the way of the future. A 3D printer isn't very useful if we have to get our filament from china. I've heard the size of the filament has to do with the volume and pressure behind the extruder nozzle and not so much with the size of the hole on the extruder nozzle. If you've ever done any caulking you'll know what I'm talking about. Something to think about before drilling a larger hole!

lowering the heating temp and adding a small cooling fan would reduce the sticking.

I am a university student and I am a filament extruder for my project. Can I get a full list of the materials you use? I'm very happy if I can answer

good work but u need add water will cool down

what is rpm and wattage of motor

So hard to find the first parts. Still didn't find the first two

I wish I had found your channel years ago. I subscribed on the 1st one I watched.

nice job bro you are amazing

What is this wire

That looks great man. I wonder why you missed the center on your lathe? Is your chuck centered up with your tail stock?