Going big: Printing with a 1.5mm nozzle
Just thought I'd share some quick results for anybody curious about using oversized nozzles on the Prusa i3 Mk3. I picked up some cheap 1.2 and 1.5mm nozzles on AliExpress. As expected, they're not of great quality, and for some reason, they use an oblong shape that makes my M6 socket useless. Despite these annoyances, I created a 1st level calibration print, tuned my Live-Z for the new nozzle and proceeded to try some test prints:
The 20mm cube turned out remarkably well. Layers are a lot more consistent (no 602 extrusion issues!) that expected, even if they look like cake frosting.
Benchy came out looking like the disaster you'd expect for 27 minutes. Reminds me of some of the 3D printing pen models. Still, surprised it's recognizable as it is. Overhangs are obviously going to be a problem with extrusions of this width, but sticking to prints with appropriately-sized extrusions, it might be useful.
Oh, and maximum print speed is something like 6mm/s. Prints finish up very quickly though.
I'm going to try some additional prints using smaller layer heights. My goal is to be able to produce threaded parts at 0.40mm layer heights.
Re: Going big: Printing with a 1.5mm nozzle
if you got some proto pasta metal pla, I bet it would look neat.
I have a Prusa,therefore I research.
Re: Going big: Printing with a 1.5mm nozzle
I'm going to try some additional prints using smaller layer heights. My goal is to be able to produce threaded parts at 0.40mm layer heights.
What is the layer height you used for benchy?
Often linked posts:
Going small with MMU2
Real Multi Material
My prints on Instagram
Re: Going big: Printing with a 1.5mm nozzle
Ah, sorry. 1.2mm layer heights, 1.69mm extrusion width, ~5mm/s speed with generic PLA.
[...] What is the layer height you used for benchy?
Re: Going big: Printing with a 1.5mm nozzle
I've got some metals I haven't used yet. I'll have to look for a big piece to try with it.
if you got some proto pasta metal pla, I bet it would look neat.
Re: Going big: Printing with a 1.5mm nozzle
Ah, sorry. 1.2mm layer heights, 1.69mm extrusion width, ~5mm/s speed with generic PLA.
Ok. That explains this spaghetti 😀 . Try with 0.7 and you should get better results
Often linked posts:
Going small with MMU2
Real Multi Material
My prints on Instagram
Re: Going big: Printing with a 1.5mm nozzle
Ok. That explains this spaghetti 😀 . Try with 0.7 and you should get better results
The ultimate goal is to print strong, single-extrusion spans in a large print. I'm working on modular bird feeders. The top and bottom need to support large (75mm+) threads to interface with other parts, so need to be several perimeters thick. The middle is meant to be 1 extrusion wide at maximum layer height (pseudo-vase mode) to provide some translucency. I'm using Slic3r's variable layer heights to do this:
I've got great results using a 1.00mm nozzle with 0.40mm layer heights overall, and 0.80mm layers in the middle section. The part is designed with 1mm widths for the center part, but I want to try increasing it to 1.5mm and using 1.2mm layer heights with the new big nozzle.
Re: Going big: Printing with a 1.5mm nozzle
Understand that. Good idea.
You might want to eliminate the big gaps at the start/end of a line. Looks to me like coasting or retraction.
How well bond the layers with 1.2 layer height? Can you pull the benchy apart with your hands?
Often linked posts:
Going small with MMU2
Real Multi Material
My prints on Instagram
Re: Going big: Printing with a 1.5mm nozzle
Oh definitely. This was just a quick print with zero tuning from the 1.0mm nozzle settings. I was surprised it worked as well as it did.
You might want to eliminate the big gaps at the start/end of a line. Looks to me like coasting or retraction.
How well bond the layers with 1.2 layer height? Can you pull the benchy apart with your hands?
Good question! I stuck my thumb under the roof and gave it a good twist and I'm unable to snap it apart. Pressing on the side of the smokestack did snap it off, but I think that's more to do with the PLA. The stack is a single extrusion, so no real strength to it.
Re: Going big: Printing with a 1.5mm nozzle
Right, this is begging for a "Michelin Man" application.
Re: Going big: Printing with a 1.5mm nozzle
one thing that I have been wanting to print is a cali-cat at scale to max fit but i dont have the time
also do you have a e3d volcano heater block?
RE: Going big: Printing with a 1.5mm nozzle
Just thought I'd share some quick results for anybody curious about using [...] threaded parts at 0.40mm layer heights.
Do you mind sharing your experience/profile for the 1.2mm nozzle? Quick question about the bottom layer for the textured sheet: Usually it's not good if you can easily see the tool path, but for me it appears that getting the needed smush is like... impossible without the nozzle dragging through the filament, or do I need to overextrude instead of lowering the z?