Hi All,

Ender 3 has a build volume of 220 x 220 x 250 mm, I have never printed anything that was close to 250mm tall. With a 0.4mm nozzle, it would take days to print a functional model this tall.

Based on several youtube videos, 0.6 mm or 1mm nozzle are good options. So I bought both 0.6 and 1 mm nozzles for my Ender 3. To my surprise, cura does not have a proper profile for a 1mm nozzle. and none of the youtube videos has a good reference point to start.

In this instructable, I will share how I created a profile and learnings. This is not the best profile, but a great starting point to start tweaking

Supplies

Ender 3
1mm Nozzle
spanner set (6mm and 7mm)

Step 1: Changing Nozzle

From the menu, heat up the nozzle to 190 degrees
Using a spanner remove the original 0.4mm nozzle
Remove boden tube
Fix the new 1mm nozzle
Insert boden tube

Step 2: Cura Profile

Open Cura, select 1mm nozzle and select 0.32mm height default profile
Start editing the fields directly
Layer height: 0.5mm
50% of the nozzle width
Initial Layer Height: 0.5mm
50% of the nozzle width
Wall line count: 1
We do not want to have walls too thick and waste filament
1mm width is strong
Top Layers: 2
Bottom layers: 2
Printing temperature: 210 (for PLA)
We want the filament to melt faster, some might ask to increase this to 230 degrees
I found 210 as good starting point
Retraction: 4 mm
One will have to tweak this based on their printer.I found this value a good starting point
Print Speed: 40mm/s
Need time for the filament to melt, reduced speed helps
Infill: as low as possible, I used 5%

Step 3: Testing

Best way to test a new profile to its limits
I used a horse model to print
The print time was reduced from 1 day 12 hr to 7 hrs
Based on my observations
My initial retraction was set at 6mm, which caused gaps at the start of every layer
Stringing at 215, but at 210, was lesser
Good print quality with few under-extrusions and bubbles
the imperfectness of 3d printer are enlarged