Diamond 3 in 1 out nozzel setup for multispool prints

deckingman

@fma said in Diamond 3 in 1 out nozzel setup for multispool prints:

Why don't you just set the mixer to 1/3-1/3-1/3?

He could do that - it's one of the options I set out above. The downside is that all 3 spools would need to be changed at the same time and after the first print, one would need to "guestimate" if there is enough filament left on the 3 reels to complete the next print. By using each reel sequentially, one has the option of fitting a new reel whenever it runs out and while the printer is using a different reel.

fma

This can be solve by using a ratio r1-r2-r3 not too far from 1/3-1/3-1/3, so each spool will end at a different timing.

deckingman

@fma said in Diamond 3 in 1 out nozzel setup for multispool prints:

This can be solve by using a ratio r1-r2-r3 not too far from 1/3-1/3-1/3, so each spool will end at a different timing.

Yes that would work too. So we can add this to my other 4 alternative methods.

fma

BTW, is there a simple, manual, tool to fuse 2 filaments, like the Palette does?

CNCModeller

Thanks very much for all the info. Im going to read the blog next. Some initial thoughts below.

I'm planning on printing with ABS but I expect that'll degrade just like PLA if exposed to extended time at print temperature.

So I really like the idea of tracking filament length so I can print out each spool one at a time. I've been looking into a filament alarm that tracks consumed filament against extruder steps as a print quality metric, it'd only take a tweak to alarm out the filament with a small percentage left.

This all needs some more thought but I also like the idea of simultaneous equal printing from each spool as I imagine the combined melt paths would act like a high flow nozzle giving me a higher print speed.

Food for thought...

Many thanks again!
Barry M

CNCModeller

It's also worth saying that my print style is effectively a complex vase mode print so I have very few retracts in a print...

CNC Modeller: Spiral 3D Print with Integral Structure
https://youtu.be/MQ3f92hDAdY

Thanks again!

Phaedrux

@fma said in Diamond 3 in 1 out nozzel setup for multispool prints:

BTW, is there a simple, manual, tool to fuse 2 filaments, like the Palette does?

I've seen it done with a hair straightener and a piece of PTFE tube.

deckingman

@cncmodeller said in Diamond 3 in 1 out nozzel setup for multispool prints:

This all needs some more thought but I also like the idea of simultaneous equal printing from each spool as I imagine the combined melt paths would act like a high flow nozzle giving me a higher print speed.

Oh yes! You get 3 times the melt chamber volume but also, each filament moves at 1/3rd speed of a "normal" hot end. So the time in contact with the hot surface is also increased 3 fold. The net result is very high melt rates as I have demonstrated here https://somei3deas.wordpress.com/2018/10/14/real-3d-printing-at-high-speeds-and-even-higher-melt-rates-with-a-large-nozzle/

T3P3Tony

@fma said in Diamond 3 in 1 out nozzel setup for multispool prints:

BTW, is there a simple, manual, tool to fuse 2 filaments, like the Palette does?

Predating the palette is @RichRap3D's filament fusing design:
https://richrap.blogspot.com/2011_06_01_archive.html
This works well and is relatively easy to make.

(as an aside, 2011! almost 8 years ago, where does the time go!)

fma

Thanks for the link!