Sorry Ducky, but there is absolutely no space for a lathe. I’d need to excavate another 16tonne of sandstone out from under the house plus redo all the piers & bares!  

So!!! What's the problem? That 16 isn't as bad under metric...

 Then rotate that picture 90 degree, 

Will not work... all these new sites correct photo rotation.

If your first cut is too short... Take the second cut from the longer end... LBD