Best settings to print this with?

[tasopoulos 40]

Could you please give me some input on the best settings to use for printing this?http://www.thingiverse.com/thing:561661

I had printed a similar pattern (Voronoi) for a bracelet, but I was a bit disappointed by the result (excessive stringing and some blobs):

So I would love your guys' input on this headphones stand before I begin. Thanks in advance.

Edited December 10, 2015 by Guest

[tommyph1208 55]

- As cold as possible

- That also means fairly slow

- Fine tuned retraction at that temp

- Good print cooling

- High(ish) travel speed

[tasopoulos 40]

Thanks @tommyph1208, I figured as much about speed and temperature (I was thinking of printing at around 190-200C and 30mm/s with Colorfabb PLA), but I think retraction is always the thorn in my side. Any recommendations about retraction settings (both in Cura and on the UM2)?

[tommyph1208 55]

I don't have an UM2, so its a bit hard to say and I think a lot of things factor in to the final result...

I think 4 mm. @ 40 mm/s is a safe default, and you can work your way from there...

What you could then do, is to print some test prints with different settings and see what you like best...:

- Get a model like this one: http://www.thingiverse.com/thing:1028352

- Use the "Tweak at z" plugin, to modify temperatures at the different heights and slice it with eg. the 4 mm. @ 40 mm./s retraction setting... Do a test print.

- Now tweak the retraction settings somewhat heavily (like 6 mm. @ 60 mm./s), slice and print again...

- Try the same to the other side (2 mm. @ 20 mm./s)...

With those 3 prints I think you should have a very good idea about what temp and retraction works best for your machine, brand of filament, climate etc. etc.

[tasopoulos 40]

It turned out much better than I expected retraction-wise, but for some reason I got a bit of underextrusion on the first half of the print (somehow it corrected itself on the way up, without me changing anything):

Edited December 21, 2015 by Guest

[yellowshark 153]

I do not see layer depth mentioned; personally I would use .1mm, but that is a matter of taste, and print speed of 20mm/s. Fans full on and print bed temp. as low as you can - certainly reduce it below 60 after layer 1. I suspect your "under extrusion" could be coming from the print bed heat, that is a guess. As already said, extruder as cool as possible; certainly with settings above I would not exceed 200 but it depends on your printer and the make/colour of the PLA.

[tasopoulos 40]

Layer height was 0.2mm, so I believe it was the speed thing (needed this a bit urgently, so I used something like 30-40mm/s, do not remember exactly). Guess that's way too fast, especially for 0.2mm layers.

[yellowshark 153]

Well as a general statement, no 30-40 mm/s is not too fast for .200 layer. Running as cool as possible will help you with the stringing on your bracelet. If I were printing something intricate like your bracelet then I would drop down to 20mm/s in search of a good quality finish, but I tend not to print those type of models so I have not done any testing on that subject. I do suspect that dropping to 20mm/s, irrespective of layer resolution, will improve your result - if you have the time

[Wynsome 0]

Hi,

New here, but I am wondering do the Voronoi bracelets need support? 

If they need support, what type?  JUst trying to learn about this bracelet design.

 

Thanks,

 

Wynsome

[gr5 2,268]

Usually not.  The one printed above had no support.

[Wynsome 0]

Thank you