Thin wire joinning

[potentillaCO32]

I promise not to suggest solderseal thingies.

I have reformed.

 

[Poignard]

I've used 'Bootlace Ferrules' successfully in conjunction with good - quality screw terminal blocks.

Bootlace ferrules

 

[Refueler]

Being in RC .. you get to know about fine wire connections !! You say Crimp is not possible ? Maybe - but if you have the gear for RC ... then I suggest JST have various connectors male and female based in various crimp pin sizes.
Just saying ...

 

[thinwater]

I've used 'Bootlace Ferrules' successfully in conjunction with good - quality screw terminal blocks.

Bootlace ferrules

View attachment 206558

"Good quality," as applicable to stranded wire (not solid or ferrules), means there must be a pressure plate, such that the screw does not bear dirrectly on the wire. This prevents strand mage. (ABYC requirement.)