Changing a M2 from 1.75 to 3.0 mm Filament

[jimc]

nothing for the m2 has ever been produced in 3mm. the v4 isnt gonna come in a 3mm version. you would need to convert to a different mfg hot end. you can get an e3dv6 in 3mm. many of us run those in 1.75 on our m2 instead of the v4.

[wmgeorge]

Impressed. How many changes are needed and is the thermistor compatible with the electronics? I thought I saw a listing online for the V4 in 3 mm.

[jimc]

the v4 is only available from here or shipped on new machines. def not avail in 3mm.


http://www.makergear.com/products/m2-upgrades

the e3d you can get from here.

www.printedsolid.com

the e3d you just need to use the #5 thermistor table in the firmware which takes 2 min to change. other than that you can just print yourself the filament drive and thats about it i think. you will prob have to mod one of the e3dv6 filament drives on thingiverse for 3mm. just open the bore of the filament path up. here is a link to my set up but its 1.75.

http://www.thingiverse.com/thing:344950

[insta]

The 3mm "v4" you keep finding online is a generic hotend from Arcol.hu. He is coincidentally up to his 4th version as well. It has nothing to do with the M2 in any way and is not going to bolt up at all. I've actually used it on another machine, it works pretty well, but that's incidental.

I say sell the plastic, take what you can get for it, and replace it with eSUN's stuff. In the grand scheme of things, 10 spools isn't that much, and you can almost get 10 spools from intservo for the extra $100 you're willing to pay for the 3mm hotend! 1.75 is the way to go, embrace it.



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[Jules]

The 3mm "v4" you keep finding online is a generic hotend from Arcol.hu. He is coincidentally up to his 4th version as well. It has nothing to do with the M2 in any way and is not going to bolt up at all. I've actually used it on another machine, it works pretty well, but that's incidental.

I say sell the plastic, take what you can get for it, and replace it with eSUN's stuff. In the grand scheme of things, 10 spools isn't that much, and you can almost get 10 spools from intservo for the extra $100 you're willing to pay for the 3mm hotend! 1.75 is the way to go, embrace it.



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Sensible. Eminently practical. And more than a little freaky with the brain-washing thing.

[wmgeorge]

The 3mm "v4" you keep finding online is a generic hotend from Arcol.hu. He is coincidentally up to his 4th version as well. It has nothing to do with the M2 in any way and is not going to bolt up at all. I've actually used it on another machine, it works pretty well, but that's incidental.

I say sell the plastic, take what you can get for it, and replace it with eSUN's stuff. In the grand scheme of things, 10 spools isn't that much, and you can almost get 10 spools from intservo for the extra $100 you're willing to pay for the 3mm hotend! 1.75 is the way to go, embrace it.
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And that does make sense. I personally would think the 3 mm would be easier to feed because of its larger diameter giving more area for the hobbed bolt or gear to hang onto. But the change over suggested for the hotend just a couple posts up looked interesting and well designed. Thanks guys I will be ending up with a M2 as soon as I can sell the TAZ. Its a good machine, new in June this year, but I think the M2 would be easier for me to pack up and take on trips.

[Matt_Sharkey]

And that does make sense. I personally would think the 3 mm would be easier to feed because of its larger diameter giving more area for the hobbed bolt or gear to hang onto.

That's about where the benefits end. If you think about the volumetric precision, the 1.75mm filament is much more accurate than 3mm because you can use more steps in the motor to fine control the volumetric output. the 3mm will put out effectively double the volume for each step compared to 1.75, so that is half of the precision available.

The only point that you MUST consider 3mm would be for a Bowden style extruder. Can you push a rope?

[wmgeorge]

And that does make sense. I personally would think the 3 mm would be easier to feed because of its larger diameter giving more area for the hobbed bolt or gear to hang onto.

That's about where the benefits end. If you think about the volumetric precision, the 1.75mm filament is much more accurate than 3mm because you can use more steps in the motor to fine control the volumetric output. the 3mm will put out effectively double the volume for each step compared to 1.75, so that is half of the precision available.

The only point that you MUST consider 3mm would be for a Bowden style extruder. Can you push a rope?

MakerGear must have it pretty well down as you can not argue with success and you can design the feeder to grip 1.75 probably just about as well as the 3 mm. Sure I can look it up after I get done posting but what size nozzle is standard with the M2?

[Matt_Sharkey]

MakerGear must have it pretty well down as you can not argue with success and you can design the feeder to grip 1.75 probably just about as well as the 3 mm. Sure I can look it up after I get done posting but what size nozzle is standard with the M2?

.35mm is the standard. many also buy a .50mm as there may be filaments that play nicer with a wider extrusion.

[jcspball13]

Are there any advantages or disadvantages to using 3mm filament?