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Can I use 3mm nozzle?

Posted by bianchi 
Can I use 3mm nozzle?
November 08, 2015 11:20PM
Guys, can I use 3mm nozzle on my reprap I3? Currently it s using 1.75mm? How to swap it? Any clues? Thx
Re: Can I use 3mm nozzle?
November 09, 2015 04:06AM
Depends on your printer... Mostly yes, how depends on specifics of your machine

you need to replace the hot end with a 3mm version
you probably need to replace extruder with 3mm version

If you have a direct drive extruder, replace it with a geared system, 99% of direct drive are crap for 3mm (despite the adverting)

If you have a hobbed bolt, you may need to replace that also.. (some aren’t deep enough for 3mm)

Edited 1 time(s). Last edit at 11/09/2015 04:11AM by Dust.
Re: Can I use 3mm nozzle?
November 09, 2015 07:34AM
Can I print directly to the bed without a mask ?
I'm using PLA filament and heated bed...

Thanks
Re: Can I use 3mm nozzle?
November 09, 2015 08:36AM
Hi,

1.75mm is the actual standard, most of manufacturers uses it
because it have less friction and melt faster.
Moving 1mm3 of filament requires more motor steps so the resolution is better.
There's no benefits to use 3mm filament, except if you print with a vulcano hotend and a nozzle over 1mm.
Just a question, why would you swap to 3mm ?

++JM
Re: Can I use 3mm nozzle?
November 09, 2015 09:55AM
I just want to know....because I bought the wrong PLA filament with the diameter of 3mm....anyway I'm going to return it because I can not use it...
Can I use kapton 200mm for printing ? thanks
Re: Can I use 3mm nozzle?
November 09, 2015 12:58PM
Hi,

Sell or resend your 3mm filament, it will be much expensive to update your printer anyways.

You can use Kapton tape but it's fragile.
There's two long lasting solutions :
- A polyimide plate instead of the glass plate
- A BuildTak plate over any surface.

++JM
Re: Can I use 3mm nozzle?
November 09, 2015 03:14PM
What's the brand for polymide plate ? is it expensive?

Which one is better between polymide plate and BuildTak plate ? thanks
Re: Can I use 3mm nozzle?
November 09, 2015 03:30PM
Hi,

Sorry, I would say Polyetherimid (PEI).

There's no brand, except BuildTak (AFAIK a PEI film over polymer sheet).
Generaly it's a polymer raw material avalable in large boards.
Some resellers offers some piece of hard PEI plates as buildplates. It's generaly a bit expensive.
French PEI reseller, sometimes you can find some on Ebay.
I'm a BuildTak user, you can find it worldwide and it's less expensive. (And more fragile too...)

++JM
Re: Can I use 3mm nozzle?
November 09, 2015 04:57PM
can I use a layer of glass with polyamide tape glued on it ?
Re: Can I use 3mm nozzle?
November 09, 2015 05:03PM
Is this what you're talking about ?
BuildTak
How to use it ? Stick on my plate ? Is it some kind of tape as well ?
Thanks

Edited 1 time(s). Last edit at 11/09/2015 05:04PM by bianchi.
Re: Can I use 3mm nozzle?
November 09, 2015 05:06PM
When I remove the object.....I don't have to peel BuildTak off right ? so I only peel the object ?
Re: Can I use 3mm nozzle?
November 10, 2015 01:10AM
Yes. And it's probably held down with double sided tape. Check the "General" topics section and read the post for "New build platform material". Can't find it now. Here is there link.
[www.mutley3d.com]

Edited 1 time(s). Last edit at 11/10/2015 01:16AM by elwood127.
Re: Can I use 3mm nozzle?
November 10, 2015 05:33AM
Hi J-Max,

How can you use BuildTak ? sticking into the plate ?
Thanks
Re: Can I use 3mm nozzle?
November 11, 2015 11:46AM
Hi,

Buildtak is a self adhesive sheet that covers any surface.
But don't stick it directly on your heatbed, you would not be able to replace it without damaging the bed !
Stick it to glass or preferabily a thick aluminium plate.

++JM
Re: Can I use 3mm nozzle?
November 11, 2015 04:25PM
Hi
J-Max....
So I need to clamp the aluminium plate for sticking BuildTak then....
Something like :
Spring clamp
How thick is the alumunium ?
will 2mm be ok ?

Thanks
Re: Can I use 3mm nozzle?
November 12, 2015 09:31AM
Hi,

I'm affraid you won't get a flat surface with aluminum under 5mm thick.
A too thin aluminium plate will bend and twist easily.
You can't use plastic clamps, they will melt.
Try a search with "buldog clips".
You need the thickness of the aluminium plate + heatbed as opening for the clips.

++JM
Re: Can I use 3mm nozzle?
November 12, 2015 09:44AM
How about 2mm galvanized iron ?
Re: Can I use 3mm nozzle?
November 12, 2015 11:19AM
Quote
bianchi
How about 2mm galvanized iron ?

I Would recommend a piece of Cast Aluminium Tool plate of 5-6 mm thickness this is the only way to ensure it is flat

Doug
Re: Can I use 3mm nozzle?
November 12, 2015 04:32PM
I see, where do you suggest me finding it ?
Re: Can I use 3mm nozzle?
November 12, 2015 04:34PM
Like this one ?
Cast alumunium tool plate
Expensive...Where can I find cheaper one ?
Thanks

Edited 1 time(s). Last edit at 11/12/2015 04:38PM by bianchi.
Re: Can I use 3mm nozzle?
November 12, 2015 04:44PM
or can I use acrylic plate ?
Re: Can I use 3mm nozzle?
November 13, 2015 01:13AM
Can I use this ?metalbsheet
Re: Can I use 3mm nozzle?
November 13, 2015 02:52AM
Quote
bianchi
Like this one ?
Cast alumunium tool plate
Expensive...Where can I find cheaper one ?
Thanks

Didn't say it was cheap and as for getting it cheaper it would help to know what part of the world you are in in the UK you can get it from look at the Plate tab then ecocast
Re: Can I use 3mm nozzle?
November 13, 2015 04:07AM
I'm in Perth Australia, may be galvanized metal would be enough ? it's thin but hard....
Re: Can I use 3mm nozzle?
November 13, 2015 04:19AM
This one is hard...thin but hard...stiff
Mini Sheet 0.55 Galvabond 600x300mm
Re: Can I use 3mm nozzle?
November 13, 2015 10:32AM
Hi,

Perth is a big city.
You should have several metalwork resellers in town.
Or, as we reprappers don't need large surfaces,
maybe you could ask in a metalshop for a offcutt.
Probably people there will give it to you for nothing or a beer. winking smiley

++JM
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