1.75mm or 3mm filament and nozzle size?

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1.75mm or 3mm filament and nozzle size?

Postby Gijs » Mon Feb 27, 2012 1:47 pm

title says it all. Which filament will you be using and why+ which nozzle size?

I see that the quantum prototype is using 1.75mm

1.75mm : requires less torque, higher feed rates, therefore more control over feed rate (?), better for small parts (?)
3mm: cheaper, lower feed rate, so potentially higher extrusion speed (?), better for larger parts (?)

nozzle size: smaller means better (potential) resolution. What is the current optimum?
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Re: 1.75mm or 3mm filament and nozzle size?

Postby Enraged » Mon Feb 27, 2012 4:02 pm

I'll be using 1.75, for the benefits you mention.

The price isn't really much different between the sizes, as most shops sell by weight rather than by length.

Don't know about nozzle size yet, I haven't decided on which extruder I want to use.
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Re: 1.75mm or 3mm filament and nozzle size?

Postby Zat German » Mon Feb 27, 2012 5:06 pm

Both 1.75mm and 3mm with a .35 nozzle. I ordered some Impact Modified PLA in 3mm from New Zealand for some tougher stuff I want to make but I using 1.75mm for everything else.
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Re: 1.75mm or 3mm filament and nozzle size?

Postby butterfingers » Mon Feb 27, 2012 5:27 pm

Zat German wrote:Both 1.75mm and 3mm with a .35 nozzle. I ordered some Impact Modified PLA in 3mm from New Zealand for some tougher stuff I want to make but I using 1.75mm for everything
else.


May I ask who you ordered from? I'm in NZ.
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Re: 1.75mm or 3mm filament and nozzle size?

Postby Zat German » Mon Feb 27, 2012 5:41 pm

butterfingers wrote:May I ask who you ordered from? I'm in NZ.

http://diamondage.co.nz The owner hangs out in the #reprap channel and was very helpful.
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Re: 1.75mm or 3mm filament and nozzle size?

Postby butterfingers » Mon Feb 27, 2012 11:41 pm

Zat German wrote:
butterfingers wrote:May I ask who you ordered from? I'm in NZ.

http://diamondage.co.nz The owner hangs out in the #reprap channel and was very helpful.


Cheers - I'll try that.

I just ordered an Extruder here in NZ, so just to close the loop I'm going for 3mm rather than 1.75. Filament's cheaper and I can't see how it makes much difference. Nozzle size, sure, but not much for filament.
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Re: 1.75mm or 3mm filament and nozzle size?

Postby Gijs » Tue Feb 28, 2012 1:21 pm

just came across this one: http://www.lulzbot.com/en/96-budaschnozzle-11.html

Seems to be quite a good option, as it can take both 1.75 and 3 with a simple change of tube. And the nozzles can be changed/replaced easily as well

anyone that has experience with it?
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Re: 1.75mm or 3mm filament and nozzle size?

Postby bjoerngiesler » Tue Feb 28, 2012 2:15 pm

Gijs wrote:just came across this one: http://www.lulzbot.com/en/96-budaschnozzle-11.html


It's derived from the arcol.hu hot end, basically (from what I've read) the same thing plus a Wade-compatible mounting plate. Should be quite good.
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Re: 1.75mm or 3mm filament and nozzle size?

Postby WhiteB0rd » Wed Feb 29, 2012 1:58 am

The Budaschnozzle does indeed look good, and quite flexible as it has orifices which can easily be changed, and can switch easily between filament sizes.

It is compatible with Wades and family, but the dimensions may be a problem for us. Their site states the diameter at 40mm, and from what I can see of the specs, the cutout in the extruder mount looks to be 36mm. Since Bart says the parts are already on order, I'm guessing getting the extra 4+mm in the carriage ain't gonna happen for the initial orders.

I have an email dialog going with them to talk about mounting options, but it looks like a little customization might be necessary. Not sure yet if that means touching up the carriage assy with the dremel, or printing an adaptor, but the speeds that thing achieves while extruding combined with the apparent speed of the ORDbot XYZ make it very attractive in my mind.



WB
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budaschnozzle adapter

Postby Gijs » Thu Mar 01, 2012 3:42 pm

I just downloaded the source files of the budaschnozzle and placed it in the hadron drawing. If this is possible, it would require a simple metal adapter plate, which then replaces one of the triangular plates in the design. The nozzle then sits in the circular cutout. Of course the black plate where the extruder sits on could be replaced with one that extends to the extruder platform, but I wonder if that's stiff enough?

See this drawing:

ORD-budaschnozzle-adapter.JPG
ORD budaschozzle adapter plate
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