I've been playing around with printing Warhammer 40k models. FDM isn't going to give you resin quality, and definitely not going to give you Games Workshop quality. But at 25 cents per infantry model it's a great way to build out an army. I plan on using the printed models at first with my friends, and then slowly replace them with official models as ?I find them on ebay and Mindtaker Miniatures in Vancouver, WA.

All The models I have printed come from Cutls3d. Search their site and you can find all sorts of minis.

I picked the Dark Angels Chapter since that was the army I fielded back in high school for Second Edition. I had 2 tactical squads with the models below to start with.
This
is what peak performance looks like 

Printed Units (updated as new items are printed, and then painted)

Vehicles and Dreadnoughts.
Infantry
The Current Army, printed unites and offical units:




The models are all printed with Overture PLA bought off Amazon. I was able to get 2 rolls (1 Kg each) for $30 US.

Prusa Mini print settings: I am a bit impatient, so no .2 mm nozzle, and 9 hour print times. I print with a .4mm nozzle, using the mini's Input Shaper model, at .1 mm Fast Detail mode. infantry size models take about 2 hours and 30 minutes per model. You want to print them one at a time for improved quality and no stringing. Also the models should sit at about a 20 degree angle so there is no flat "bottom" layer. Just give them a bit of a lean in your slicer. I also use the "organic" tree supports with the "Top Contact Distance" set to .2 mm.


Painting PLA is fine. Not as smooth as painting models from Games Workshop, but once you get a good primer down, most of the lines and gaps get smoothed out. You can see on the Aggressors below, once the primer has been applied, the model appears smoother.


Here is a cost break down for each squad and vehicle I have 3d Printed. The cost of the model from GM, total saved, and the cost of filament (overture PLA) at this time.
Printed
GW Cost 1544.5
Dreadnought 62.5 Filament Cost 90
Rhino 60

Landraider 92 Total Saved 1454.5
Ballistus Drednought 70

Brutalis Drednought 80

primaris repulsor 78

Assualt intercessors 60

Assualt intercessors 60

Primaris Agressors 60

Primaris Agressors 60

Centurions Devastator 80

Heavy Intercessors 65

Primaris Eradicators 60

Inceptors 60

Inner Circle Compantions 60

Inner Circle Compantions 60

Asmodai 44

Azrael 45

Land Speer Vengeance 79

Predator Annihilator 75

Desoaltion Squad 60

Lieutenant 37

Lieutenant 37

Chaplain 40

Eliminators  60





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