Hello!
Some of you may remember when I posted here my design of watercooled extruder. Well in the end I didn’t like the design and designed new one. I gave up with the double pinch wheel system also. It is still watercooled There is also PTFE tubing that I didn’t want in earlier build (and either in this build, but its really hard to drill 2mm hole to stainless steel)
Main features of this extruder:
-Machined from aluminum
-Watercooled
-Driven by flexible driveshaft
-Stainles steel filament pulleys
-Lightweight (160grams with hotend)
-1:25 worm gearing
Filament pulleys are hobbed with M3 tap. They have incredible gripping force! I did measurements with fishing scale and got pulling force of 25.2kg until worm screw bearing slipped down a bit. They are only glued to place so I didn’t continue testing. I think that is enough and there is really no need for double pinch pulleys!
Watercooling works also well. There is no radiator yet, but it still keeps temperature on about 40 degrees of celcius. I’ll add later radiator with 80mm fan on it.
Cool, excellent idea. It would be interesting to try to do the same. Can you share your drawings? On which machine you made processing? My hat’s off to you!
+Vladislav Kislovski Thank you! Yes that is possible, though there is a lot of work to do in them. If you know when you are doing something for yourself, plans never be true Changes are always needed. But yes, maybe I can share them in some point. Can’t really guarantee that they are correct…
Parts are made with old mazak slant turn 20 ATC. It’s three axis lathe with power tools. And drilling machine. Thanks again!
@Mark_Rehorst Thanks! Printer sits on wooden table that amplifies sound a lot! So if I lift printer up in the air, it’s way more quiter!
I use machined steel wheels, so I have no experience about nylon wheels. But I assume that there isn’t really significant wear.
@Mike_Kelly_Mike_Make Thanks for nice words! I’ll share the files at some point. I need to fix them first since they aren’t fully correct. I didn’t realize that there is so many people who wants to see the files!
Nope, I forgot to add pictures of it But it’s nothing special. You can see two holes from pictures where hoses are attached to it(second to last pic). They are connected via third hole so there is U-shaped cavity surrounding heatbreak. And that third hole is plugged so there is no visible hole.
There is also PTFE tubing that I didn’t want in earlier build (and either in this build, but its really hard to drill 2mm hole to stainless steel)
Changes are always needed. But yes, maybe I can share them in some point. Can’t really guarantee that they are correct…
But it’s nothing special. You can see two holes from pictures where hoses are attached to it(second to last pic). They are connected via third hole so there is U-shaped cavity surrounding heatbreak. And that third hole is plugged so there is no visible hole.
