Advice Sought for Lathe

[Washout]

Quick update guys and firstly thanks for all the advice.

I had a look at what's out there and in the end went for a Sieg SC4 lathe, as a. it was in stock and b. whilst not as sturdy or precise as some of the bigger/more traditional makes and models does have some nice features i.e. T-Slotted cross feed/carriage etc.

It arrived yesterday and after bribing the wife and daughter to help lift it onto its stand (would not recommend this as its junk, but fixable and was available) I did a quick and dirty setup and started on my first piece. Not having used a lathe since I was at school (iirc Blondie or The Police were in the charts back then ;) ) I quickly got down to feeds and speeds - isn't it always?......

After a bit of digging about I grabbed some formulae from Wikipedia and came up with the attached spreadsheet and so far it has worked OK, but would like a second opinion if anyone has the knowledge and/or time and feedback if I've made a cockup. It maybe useful for someone else......

Off to start my second part and hopefully I'll see the results on a GT racing car in future, which is where all the CNC and engineering stuff is going towards :)

Later


Chris