mino said:Guys, you are really overcomplicating.
1) Ideally, you need an aluminum blade for your TS 55/TS 60 but an MDF/Chipboard blade will do wonderfully for a few cuts. Forget about the Kapex for now.
2) You needs to use a piece of offcut *), bout 8mm thick to support the rail (you will cut it placed upside down)
3) Take a square (GRS-16 works great, but any will do) and aligh your rail on the rail you want to cut (the "bottoms) of both rails will be in contact
*) if you had 3 rails, a better aproach is to use the second rail to "complete" the one you are cutting. Two rails upside down create an even board-like assembly and are a non-issue to cut with a tracksaw, no complications needed, and you can use your "standard" MDF/Chipboard blade for this if it is just a single cut ...
Brilliant - this makes life a lot easier.