3D Printing Forum

I am slowly cranking out pieces for a large project (BB-8)

I am thinking that large structural pieces could go quicker using a 0.6 or even 0.8 nozzle for these pieces.

For the exterior/detail pieces, use the 0.4 nozzle

Can someone give me any suggestions on what to use. where to get and experiences using nozzles larger than the stock 0.4?

Being a noob, I wanted to ask before trying anything!

I have a larger nozzle but haven't gotten round to use it yet, I'm hoping that when my course finishes in June I have a few weeks before the summer school week to have more of a play, but I also want to play with the smaller nozzles, as well as testing some materials and try getting an ABS setup testing....
Although I may have a need for some of the guys to print and test a product and provide feed back for my course project.

I'm going to be using ColorFabb PLA/PHA, nothing exotic this time

I agree, stick to a favourite material you know works then just a few parameters to play with

A lot of the structural pieces to BB-8 are large rings and various attachment pieces. At 10 hours a pop for many (50% infill and 0.4 nozzle), I'd love to speed that up some! I'm just curious about changes to printing temp, speeds and layer adhesion

It will be interesting to see your results.
Despite testing the cyclinder volume flow test and getting good results at 205C and 10mm3/s, for my normal printing I'm usually running at 200C with a 0.4 nozzle and 0.1 layer at 50mm/s, so really only running at 0.63mm3/s. Not pushing the machine very hard at all, usually taking about 35 minutes or so to print the std UM robot.

I really wish I had the funds for an Ultimaker 2+ Extended (or two) right now....so so many pieces to make!

I'm only using mine for personal hobby use so it's living idle at the moment due to my OU studies, but I'm going to be doing a little prototyping and testing soon for my project.
I've finished a hood for it now so I will be able to keep the internal temperature up to try ABS, I wanted to try some for a while now but last time I tried I didn't have a hood so poor results I also need to redo some tests as I threw away my sheet of paper with the results on and the spread sheet crashed without backing up

I use a 0.8mm nozzle a lot and greatly speeds up printing time.
infill is much stronger.

you do loose a little bit of the sharpness (0,4mm corner radius), but you only notice if you print small objects or objects with fine detail.
but for 95% of the prints it does not matter.

I have used 0.6 and 0.8 nozzles in the past for structural components like wall mounts and such. The only thing I really changed was the nozzle diameter in Cura. All the rest of my settings are the same, but I am not using very aggressive settings to begin with. If you normally print with speeds from the top end of what the printer can do, then you might want to scale back a little to allow the hotend to melt enough material fast enough. I think I tried with 40 and 50mm/s and had no issues at all.

Things to take care of: first layer is more difficult, especially when support is used, so go slow on the first layer (the fast travel of the head could rip off fresh lines). Bed calibration and first layer thickness could be adjusted. If possible use a large brim, this also helps calibrating the first layer, turning the bed screws on the fly. For models that are prone to warping, I usually tape the brim to the bed. The brim works as long there comes no air underneath it, when it starts to lift it will get worse over time.

Ultimaker Original (not +) can use the E3D V6 replacement nozzles, right?

I see PrintedSolid.com has them

LePaul wrote:Ultimaker Original (not +) can use the E3D V6 replacement nozzles, right?

Right, I use(d) them.

UMO (not +), UMO+ and UM2 with Anders' block use the same nozzles.
Original UM2 is different.

Amedee wrote:UMO (not +), UMO+ and UM2 with Anders' block use the same nozzles.
Original UM2 is different.

Andra of course UM2+ since it got the Olsson block factory mounted

The UMO is imho very well suited to printing with larger nozzles since it has a higher wattage heater than the UM2 and a powerful feeder, just buy some 0.6mm / 0.8mm / 1mm nozzles and start printing! (since they are shorter than the UMO nozzle you might have to adjust the height of your fan shrouds, but that is about it)