Hole saw 1.5m lecablock?

[Izze]

Hi there!
I have a stone-paved staircase built on 'lecablock'.
I would like to install a 50mm pipe through the staircase (lecablock).
I'm considering using a hole saw... but the staircase is about 1.5m deep, is it possible to drill that deep with a hole saw?
Grateful for tips

 

[NoOne2k]

I would have either rented a core drill with an extension or a regular concrete drill and hammer drill as it is such a small dimension and drilled without hammering.

 

[Izze]

I would either rent a core drill with an extension or a regular concrete drill and hammer drill as it's such a small dimension and drill without hammer.

Nice, and that's something I was thinking! But how does it work with the depth of the core drill since the hole will be quite deep? Do you drill bit by bit as deep as the core drill is, 'empty the drill', drill again, and continue until you're through?
I'm mostly used to the core drill being deeper than the wall you're trying to drill through

 

[NoOne2k]

Leca is so fragile

Nice, and that's something I've been thinking about! But what about the depth of the core drill since the hole gets quite deep? Do you drill piece by piece as deep as the core drill is, 'empty the drill', drill again, and continue until you're through?
I'm mostly used to the core drill being deeper than the wall you're trying to drill through

Leca is so fragile that there shouldn't be any major problem breaking the core, removing it, and continuing to drill.