3mm vs 1.75mm Filament?

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nai1ed
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3mm vs 1.75mm Filament?

Post by nai1ed » Wed May 31, 2017 5:29 pm

I'm building a Prusa i2 with a j-head 3mm hotend. I see lots of great deals on Ebay for 3mm Filament, but my questions is how does it compare with 1.75mm when printing?

Brian

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PartTimeRonin
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Re: 3mm vs 1.75mm Filament?

Post by PartTimeRonin » Wed May 31, 2017 6:07 pm

Hhmm, unless I plan to use flexible filament with Bowden extruder, I will go with 1.75mm since it might be hard to find some type of filaments in 3mm.

Ariel
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Re: 3mm vs 1.75mm Filament?

Post by Ariel » Thu Jun 15, 2017 2:37 am

As stated above, unless youre gonna do bowden with flexible or you buy your filament by length, there's no real difference between the two, 1.75 seems to be more common though...
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divbyzero
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Re: 3mm vs 1.75mm Filament?

Post by divbyzero » Tue Jun 20, 2017 8:34 pm

As far as I have researched: 1.75mm diameter has an advantage if you have a filament that
a) needs a lot of heat
b) you want to print fast

The reason is that heat reaches the center of a thinner filament quicker.

Other considerations for me to go 1.75 rather than 3mm were a bigger choice in materials and colours and sometimes a cheaper price on 1.75mm filaments. However, this may not be the case for you.
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Moorviper
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Re: 3mm vs 1.75mm Filament?

Post by Moorviper » Tue Jun 20, 2017 11:06 pm

@ 3mm you need more pressure to push it trough the nozzle.

nai1ed
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Re: 3mm vs 1.75mm Filament?

Post by nai1ed » Wed Jun 21, 2017 10:42 pm

I just started printer 3mm filament with my newly built Prusa i2. So far it's working pretty good. I'm wondering if 3mm filament jams up less, since there would be less chance of it swelling? Also, some of the best 3D printers like the Ultimaker use 3mm filament, so there must be something to it.

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