Boring Bar Suggestions?

[mekanik]

Or previously described method but leaving a tad in the bore and see if anyone can loan you a delapena hone to true it up.
I made a boring bar to go between centres with a 6mm round piece of HSS set @ 45 deg ground with cutting edge and locked with a grub screw, job was clamped to cross slide.
Mike

[Washout]

Thanks guys,

The lathe is a Sieg SC4 and I have 410mm between centres, so can get a decent sized drill bit in there at least to start things off.

Luckily I have redesigned the part and only need to go in 140mm now, but of course its not going all the way through so will be boring blind.

I think I'll have to create a tool by the looks of it although I might be able to get away with a 2MT boring tool set like this one for most of it: http://www.ebay.co.uk/itm/RDGTOOLS-2...item43b0cad814

Oh I have a fixed steady which is at least one thing.