Slate bricks - Making a garden step

[motty]

Hi all, new to the forum, new to garden diy, so please take it easy.
can i be forward enough to ask a question.
i intend to build a small step into my garden about 1000Lx400Wx150D.mm
ive dug down and filled with 200mm of hardcore.
what mortar mixture do i use for the base and for joining the slate bricks.
if you're wondering why I'm doing this. The original owners built that part of the path/patio from slate but the step into the garden is too high so i want to add a step.
thanks all for the help.

[lutonlagerlout]

you should have concreted the base motty
6:1

the step should be built in 3:1 mortar

cheers LLL

[motty]

I have about 100mm left for a concrete base, should i dig more hard ore back out and make a thicker base?

[seanandruby]

100ml is fine.

[motty]

Ok made base 6:1 -think i made it a bit sloppy.
how long should it take to go off before i can work on it?

[lutonlagerlout]

tomorrow morning
LLL

[motty]

Its really weird
I'm 43yrs old and lime a kid wi new toys....
after work tomorrow new mix of mortar for tiling the slate....
Oooo its so exciting, even my wife is loving it.....