Hi from eastern France !

[routerdriver]

You should have a big head start thanks to your previous experience.I would caution that a very large Z axis travel may be of limited value.Draw the motor you plan to use and include the longest feasible cutter.Then draw a line from the edge of the cutter and tangential to the motor body and this will give an idea of the steepest face that can be machined.It gets worse on the side of the motor that attaches to the Z axis.

[SGG70]

Thanks for the advice, for the router it's not so much the Z travel itself that needs to be long but the Z clearance, basically I need to able to machine at most about 75 mm deep (hence travel of 150 at least for tool clearance) but on parts that can be 100mm to 450mm thick (where the top gets machined) but I do not need to be able to do both at the same time, so a solution might be to have an adjustable table height or simply a high gantry style router and use table risers for the low parts to bring them up to the Z axis..
Definitely still a work in progress...

I'll probably start with the grinder though, kind of more urgent for me

Anyways I'm going to start on the grinder first because that's the one that is more urgent to my needs

[AndyGuid]

Welcome to the forum Serge.

Looking forward to the build threads that I hope you will be creating . . . .

It's a pity you don't live in the UK where a few of the guys could pop over to help you pickup that granite surface plate. ;-)

Andy

[SGG70]

Yeah I should be going to get that this week, I'm like a kid in a candy store about it