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Cos

YALFE - YET ANOTHER LYMAN'S FILAMENT EXTRUDER

by Cos Mar 16, 2013
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Good day.

I would like to know if you can tell me if the plastic hopper gets hot from the heat that flows back from the hot nozzle? also though of just printing one and if the temp is fine then I will otherwise I will make the hopper from wood.

Hi
Check yalfe 3
Please see link below

If you see the picture, I have installed a fan right below the hopper. Anyway, this hopper design is obsolete, I replaced it with a 2liter hopper, made from a coke bottle

Hi
Check yalfe 3
Please see link below

If you see the picture, I have installed a fan right below the hopper. Anyway, this hopper design is obsolete, I replaced it with a 2liter hopper, made from a coke bottle

whats with the 404 error?

i dont understand you....

anyway, check yalfe 3 !

it is here!
http://www.thingiverse.com/thing:951240

MO.RE.SYS. 3D (YALFE 3)
by Cos

???? ????! ?????? ?? ???????? ?? ?? ??????

YALFE V2 - YET ANOTHER LYMAN'S FILAMENT EXTRUDER V2
by Cos

To make wood filament you need to mix very fine wood dust and some plastic (i think). However, sometime in the future someone will release the secret recipe to make wood filament..
Concerning the shredder BOM ..i need first to make the filament production working from chick to toe..
check my new YALFE V2 http://www.thingiverse.com/thing:212894http://www.thingiverse.com/thi...

When i will be successful, then i will release the shredder part. After all, what can you do with the shredder if you cannot make the filament?

YALFE V2 - YET ANOTHER LYMAN'S FILAMENT EXTRUDER V2
by Cos

if they can make wood filament, will we get hemp too? please post a BOM when you work out the shredder part

To make wood filament you need to
mix very fine wood dust and some plastic. However, sometime
in the future someone will release the secret recipe to make wood
filament..
Concerning the shredder BOM ..i need first to make the filament production working from chick to toe..
check my new YALFE V2 http://www.thingiverse.com/thing:212894http://www.thingiverse.com/thi...

When i will be successful, then i will release the shredder part.
After all, what can you do with the shredder if you cannot make the
filament?

YALFE V2 - YET ANOTHER LYMAN'S FILAMENT EXTRUDER V2
by Cos

is there a way to grind/cut up or melt scrap plastic from extruding and remake filament with it. instead of just buying pellets?

I am working on a mini shredder powered by the extruder s motor. Keep in touch. Of course if you intend to work on scrap prints you need first to clean them

so when you start making it for sale and it can re-melt used ABS into 1.75mm exact filament let me know how much I can buy one for as this will save lots of wasted plastic like the powder type 3D printers do. then only draw back with extruded over powder type is no suport needed with powder type. as size and waste will be same

nice setup and nice results after the first trials :)

so for us metric guys you used a 16mm auger inside a 1/2 inch pipe? did it fit well ? Is there any play associated with those two elements not matching exactly??

and can you give us any specifics on the heating element you constructed?

The auger bit fits perfectly into the 1/2 Pipe.you don't need to fit Perfectly because the auger Needs to have some space to rotate. Concerning the heating element is custom made I put an order to an industrial equipment shop quoting only power Input, consumption and dimentions

Congrats on your work. Still I am stuck at making good quality filament. I think I have the same problem like you with air bubbles and motor stops extrude. Would you mind telling me your wiper motor's specification? What is its torque, power?
Mine is 7Nm, do you think it is strong enough?

Thanks for your kind words.
If you see bubbles along with fumes accompanied with stop of extrusion but the motor is rotating, then you are certainly baking the plastic! lower the core temp by 20 or 30 C immediately!
If the motor stops moving, then you need a stronger one. Mine is a loot from a car motor wiper, these are very strong.
If you have only bubbles then you have to remove moisture from the granules. see my instructions.

What's the best viscosity to extrude of abs filament or other plastic?? Lower or higher?

I am not a chemical engineer, nor do i work in the plastic extrusion industry, but what can you do with it if you know it? temperature controls viscosity, so you only need to know your extrusion temp. I use the extrusion temp for printing, lowering it by a factor of 10C since i want the extruded plastic a bit harder in order to keep its shape and cool faster at the exit. Of course, as i mentioned in the issues paragraph, i still did not manage to extrude quality filament due to temp variations while extruding...

Don't blame me! i could not find thinner threaded flange!!! :-)
That's where it all begun!

Fantastic! How's the filament? Printed with it yet?

Yes i did!Check the photos!

Not yet. I realised that i used a step-up voltage regulator instead of step-down. Thats why i cannot lower motor voltage. I am waiting for the right one to come from china.... The RPMs that correspond to 12 volts are too much for a good filament quality