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Kryssie
(@kryssie)
Trusted Member
3mm filament?

Hi,

I am curious whether the multi-material setup can be modified to take 3mm filament? Obviously the cooling and PTFE tubes would need to be changed, but what about the printed parts? And is 3mm filament still a common size?

Thanks,
K

Fair farren

Posted : 22/09/2017 12:14 am
AJS
 AJS
(@ajs)
Noble Member
Re: 3mm filament?

It would be a major modification. Y tubes, extruder gears, heat break, nozzle, Festos, hotend, ...

Currently 1.75mm is more commonly available than 2.85mm (although both are readily available).

Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage or loss. If you solve your problem, please post the solution…

Posted : 22/09/2017 12:32 am
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: 3mm filament?

the minimum layer height with 1.75mm filament is 0.07 mm if you used 3mm filament with the direct drive gears that are currently in service, the minimum layer height would be nearer 0.2mm
that would be a distinct disadvantage in most instances
regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 22/09/2017 1:39 am
Kryssie
(@kryssie)
Trusted Member
Topic starter answered:
Re: 3mm filament?

Thanks for your replies. The reason for my question is I have a large-bed printer (560x560x600) that I'm in the process of building/modifying, so layer height would not be so critical as with average bed-size.

Fair farren

Posted : 22/09/2017 7:39 am
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: 3mm filament?

Hi Kryss,

with a large bed printer you need to consider a more capable extruder and larger nozzle too... the E3d V6 probably wouldn't melt sufficient filament effectively to return acceptable build times for large models. the size you mention has more than 8 times the build volume of the original Prusa i3

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 22/09/2017 11:37 am
PJR
 PJR
(@pjr)
Antient Member Moderator
Re: 3mm filament?


the size you mention has more than 8 times the build volume of the original Prusa i3

My calculator says almost 18 times the volume of the Mk2 and almost 24 times that of the original Prusa i3 😉

Peter

Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…

Posted : 22/09/2017 11:42 am
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: 3mm filament?

I didn't say how much more than 8 times as big... 🙂

But i am pretty sure an E3D v6 extruder would be a poor choice.
And the heated bed would be something of a room heater... certainly more than a prusa psu could support via the rambo...
Nema17's will probably be inadequate...
Kryss has a big project on hand.

Lots of design considerations to take into account!

I would be interested to see the finished item in service

I did consider making a longer bed for the prusa... but so far that is just an idea... the diagonal length has sufficed to date...

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 22/09/2017 1:50 pm
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