I needed some track isolators for my N scale layout and while buying some was about 2€ the shipping costs were about 7€.
So I fired oneshape and created some.
They are maybe a bit bigger than needed, but better be safe than sorry.
I tested them and seem to work just fine.
I designed them for the following print settings:
In case you want to update just search in onshape for ‘spur N isolierverbinder’
Have fun with your trains!
The author marked this model as their own original creation.