For guides on using FreeCAD, CURA and 3D printers have a look on YouTube. Tons of tutorials on there. The best part, it the software is free, so try before you buy.
Cost wise, to repeat this build it would probably be £70-80 plus the cost of the 3D filament (under £20 per reel). CURA tells you how much filament each part uses.
If I did it again, this be the camera I use:Foxeer Cat3
The 3D printer has been good purchase.
I’ve printed all sorts of things for shooting and my other hobbies; things like back to back Piccatiny rails to make a torch mount out of two scope rings, a