Here’s a great low cost filament extruder solution. It uses basic parts available from any hardware store, and a few 3D printed ones — estimated cost is well under $100.
It’s very similar to the Lyman Filament Extruder, but can be built for even less money. By using 200C set-point heaters, his setup requires absolutely no electronics — although a cheap PID controller from China could give him more extrusion capabilities with temperature control… Regardless, the system appears to make good filament and he uses it exclusively for his personal filament consumption in his Delta printer. He’s even hacked up the ABS casing of a refrigerator, ground it down, and turned it into filament using this machine! If you’re hungry for more details, the full build log and discussion can be found on the RepRap forums.
He also has a guide on making your own ABS color masterbatch to make your own filament colors!
27 thoughts on “Low Cost Filament Extruder”
industrial crosscut paper shredders work great at turning sheets of ABS from trash into bits..
Now strip one of those down to the bare essentials and then mount it above the pellet “silo”.
Could something like this be used for injection moulding?
Something like it, yes. This? No.
Perhaps with a heated mold?
you need a lot of pressure to make plastic “runny” enough
Very cool, might try to make it!
I’m getting a redirect loop error with the link. :/
Just tested them all… not seeing any redirect error? Try copying target?
Just don’t forget to vent any fumes. Very very few 3d printer related articles talk about the dangers of breathing in all that gooey plastic goodness.
Mmmm! gooey plastic goodness.
Just like Mom used to make ! (when forgetting to take the loaf of bread in a plastic bag off of the toaster)
Or attempting to keep waffles warm on a plastic plate on top of said toaster. -.-
Wow. This 3d printering is getting to where a brat like me might be able to do it.
Remember – you can verbalize a noun as long as you grammerize it properly. One of the basic tenents of my CS course (nmt.edu). Used to great effect many times over the years.
So is anyone going to close the loop and make a 3D printer that runs on pellets with no intermediate filament stage?
Or even better, one that you feed junk plastic into directly?
I need to watch that movie again sometime.
“The Future” will be 2 years away on the 12th.
Man, time flies.
I won’t go as far to say it is impossible, however the biggest problem I see with this is consistency. Even with slight variations in filament diameter and air bubbles, your print quality will be effected. Substitute the relatively controlled filament with moving pellets or random plastic and I don’t see that working well without an unnecessarily complicated and expensive extruder setup. Filament is easy to store and work with. It does add a step as well as increase cost, however I would take that any day over having an unreliable or inconsistent printer.
well… not if you add a buffer. If you melt the plastic into a heated buffer container and then (somehow) send the molten plastic from the buffer container to the extruder, then it should be plausible.
On a youtube there is video of well working granular extruders:
However video with regularly working automatic platform in it too for the present is – blip(dot)tv(slash)makerbot(slash)makerbot-innovation-makerbot-automated-build-platform-4134498, and here the platform and the trace caught a cold :) I think a problem here not in technical difficulties, as usual. For example why not to use for thread production the same extruder, as for the printing, only with larger nozzle (1.5mm for example)? Air bubbles, non regular size of extruded filament? Ok, it should be modified so that it could accept the plastic processed in fine enough powder (it easy to make for example by means of an small electric meat grinder) and pass it to hotend by means of the worm screw. Then to pass the leaving thread which hasn’t stiffened yet completely through rollers which will give it the exact sizes. And then this filament will be cooled with the fan and to arrive at once in the second usual extruder.
Simply situation when both large and small producers of the equipment for the 3D-print prefer to overprice rather cheap plastic and to earn on it, instead of on further development of printers to any development of equipment won’t lead. It is stagnation. And here if the prices of materials for the press return from speculative levels to the real values which on orders it is less, and the structure of the equipment will include cheap tools for recycling of a material, it will give larger acceleration to development of 3D-printers. To producers will be compelled to get profit at the expense of strengthening of sales of the equipment instead of beautifully packed raw materials which from their inaction instead of a renewable recirculated material becomes a source of additional wasting only because consumers have no simple enough simple agents of processing of this material.
Besides long ago it is time to printers to become and completely automated and modular that users could update easily them in parts, replacing in them old modules on newer or to unite in automatic clusters (it can look the same as organizers for different details, only instead of boxes there will be printers which will be able to print for example different materials).
Well, generally, it isn’t surprising that it doesn’t occur yet and business goes as slowly, as well as with modular phones even if Makerbot throws out such focuses which differently as sabotage and you won’t call. But this quite obvious direction of further development of equipment for the 3D-printing and cheap household appliances for the 3D-print after all contacts sooner or later him.
Were still getting RIPPED OFF!!
CAN SOME ONE PUT A KIT TOGETHER FOR THE RIGHT PRICE 50-100 ISH NOT 2K AS ITS CLEARLY 20BUCKS WORTH OF PARTS FFS. CHEAPER TO BUY A PLASMA CUTTER, WELDER AND A FEW 3D PRONTERS FFS
Buy the cheapest possible paper shredder and modify it
Filament is so low cost and such high quality, why bother trying to make your own? I am typically buying 2# rolls of quality filament for $7 a pound!
Where are you finding it for $7?
amazon. your average kilo roll goes for 20ish, a kilo is a bit more than 2 pounds, so a bit less than 10ish bucks per pound. checks out if you use annoying units :P
Please be kind and respectful to help make the comments section excellent. (Comment Policy)