Wow Andrea, congratulations and welcome!
It's good that you say about the stuttering, I also had noticed that, but I hadn't tracked it down. I'll try what you suggest, and maybe we should start talking about a more powerful platform...
About the J-Head, I had the same problems, a lot of force required to push the 1.75mm filament. I also had some leakage problems on the J-Head which I managed to solve, but it never worked as it should. I contacted Brian, and he tried to help me to solve the leakage, but never offered to change the extruder for the stuck extruder. So I gave up and I made an E3D and it has been working MUCH nicer! The one single thing that I have seen to improve results is the extruder orifice length, it should be around 0.5mm (the depth, not the diameter) if you have the slightest (0.5mm) more, it takes a lot more force to extrude. I think the E3D V6 will probably work very well too.
By the way, for me, the best way to measure the extruder orifice diameter, is to insert a small drill bit of the same size. But it is not very common to have a set of sub 1mm drills.
Cheers!
It's good that you say about the stuttering, I also had noticed that, but I hadn't tracked it down. I'll try what you suggest, and maybe we should start talking about a more powerful platform...
About the J-Head, I had the same problems, a lot of force required to push the 1.75mm filament. I also had some leakage problems on the J-Head which I managed to solve, but it never worked as it should. I contacted Brian, and he tried to help me to solve the leakage, but never offered to change the extruder for the stuck extruder. So I gave up and I made an E3D and it has been working MUCH nicer! The one single thing that I have seen to improve results is the extruder orifice length, it should be around 0.5mm (the depth, not the diameter) if you have the slightest (0.5mm) more, it takes a lot more force to extrude. I think the E3D V6 will probably work very well too.
By the way, for me, the best way to measure the extruder orifice diameter, is to insert a small drill bit of the same size. But it is not very common to have a set of sub 1mm drills.
Cheers!