@Rene_Jurack Just got your Airbrush nozzle adapter and nozzles. Now the big questions: why isn’t everybody using them?!?! Why didn’t I tried them before?!?! The change in print quality is amazing! And for those that like to print PETG, it makes wonders!
Tell us more? Is there a link to this product?
Well, it’s the “classical” airbrush nozzle setup… I was struggling with retraction settings and blobs and stringing and quality issues. Now I get perfect results and with almost no extra tuning I also have perfect flat infill, which is said to be difficult to accomplish with such a nozzle type.
I am surprised it took so many years for people to realize this. When i released the Merlin hotend in 2014 few took notice. Now it has a steady number of users in europe, but outside it is still rare to see. So rare in fact that RepRap Discount decided to stop production. Thankfully it is not hard or expensive to produce it locally.
The difficulty of smooth surfaces is nothing more than correctly adjusting the amount of material. The sharp tipped airbrush nozzle is not as forgiving here like flat nozzles.
The strange thing is… I took a look at a professional 3d printer a while ago and noticed that the print-heads were like small inverted domes, with no flat edges, but covered completely in PTFE material or something similar with a hole in the middle. I guess this allows for printing width 2x nozzle diameter or even greater ratio if needed. But somehow for our use, a pointy nozzle makes more sense…
The very tips on the Stratasys machines are pointy though. The PTFE (or whatever that is) shield protects against radiated heat and resists nozzle huggers. Also, those machines don’t print PLA which melts very differently than a typical engineering plastic, and PLA stays softer longer, requiring aggressive cooling.
I’ve never understood E3D style nozzles with big flat tips. Makerbot style nozzles are pointier and I think give better quality. I can see the airbrush nozzles being good for the same reasons.
Are you guys using really small nozzle diameters with the airbrush nozzles, or sticking with ~0.4mm?
I ordered the 0.2, 0.3 and 0.5 nozzles. Unfortunately, @Rene_Jurack doesn’t have the 0.4 but I might buy it from somewhere else.
Now I am using the 0.3 and it’s perfect for what I have to print now.
Do you have an example of a petg print for comparison?
@Rene_Jurack Do you plan on having any 0.4mm nozzles available soon? When you do I’ll buy a couple adapters and 0.2, 0.3, and 0.4 nozzle from you to try out.
I already get fantastic prints from the stock ReliaBuild 3D pointy nozzles so I’d like to see what further benefit I can coax out of these needle ones.
@Romeo_Pavel I don’t think you will need 0.4 at all. The 0.3 prints just as fast for me, the problem is never the speed the nozzle can do but the rest of the printer. I use 0.5mm only for filament with additives (Copper, Wood, …) since those can and will clog a 0.3 nozzle.
@Rene_Jurack Just tried to order a nozzle and adapter, but failed in the shipping step. Seems Cyprus is an unknown, or is it something else?
@peter_rowser PETG with my 0.2mm nozzle.
Well that just made green with envy. Very detailed example, thank you. Wow
@Lykle_Schepers I added cyprus to the shipping-options. Sry about that.
All what @Bjorn_Marl stated above is very true about the airbrush-nozzles 
I hope, more people are able to test and enjoy them.