When assembling the hotend nozzle and cobber barrel, it says that you have to use 3.5nm but as far as I know 3.5 is just with your fingers?? or am I totally mistaken.
Had one that leaked and had tightend it, so now just want to be sure.
Thanks
[quote=“Stigdk”]When assembling the hotend nozzle and cobber barrel, it says that you have to use 3.5nm but as far as I know 3.5 is just with your fingers?? or am I totally mistaken.
Had one that leaked and had tightend it, so now just want to be sure.
Thanks[/quote]
3.5 represents approximately 3.5 * .981 kg for a lever 10 inches
For this kind of torque it is better to use a torque wrench.
I created another post to see how the other pair should be tightened, it will return on the purchase of torque wrench;)
You might want to re-evaluate that formula. And the unit system, too.
You might want to re-evaluate that formula. And the unit system, too.[/quote]
so the formula is false. It is better to use a torque wrench 
I have tighten it as far it can till the springring goes flat. Unfortunaly the filament is still leaking trough the leath.
I’m going to look for other solutions.
If it helps others, I’ll report that I tightened mine to 3.5nm using a low-value torque wrench (accurate down to 20 inch pounds) and it didn’t break or leak.