To answer your question "What lathe and Why"?
For years had hankered after a lathe, and apart from the Dean Smith and Grace, and Edgwicks in the training school had little experience of centre lathes. Myford was the only name I knew for Model Engineering and small lathes.
A friend who did a bit of machine tool dealing had a ML7 and sold it to me, and gave me some tools for it.
So I started cutting metal, and refreshing my memory along the way (from some 20+ years before. )
Having used the Vertical Slide, was not impressed by a lack of rigidity, so added a Rodney milling attachment. Now the lack of rigidity in the lathe became more apparent.
So bought a Mill/Drill. The constraint was space, still is, more than budget, but still have it. Mostly it does what I want.
Eventually the constraints of having only a 2MT Headstock and Tailstock wore me down.
With retirement approaching looked at a new Myford Super 7 Sigma, with gearbox, steadies, chucks etc. But no Power Cross Feed. The cost, circa £8K put me off.
I had asked Warco for a quote for an Imperial BH600, without stand. Never received a reply. ETR replied within a week. Also offered free fitting of a VFD. All for a quarter of the cost of the Myford; delivered.
So, with VFD can only use 6 of the possible speeds, but it provides a range at each setting, instead of the standard 12 possibles.
The BH600 could have been Imperial or Metric versions., a Chester Craftsman (still available ) was only available as Metric.
The ETR BL12-24 was dual dialled, being essentially a Metric machine.
Why did I choose it?
It has: Power Feed for both Turning and Facing, a Norton gearbox and a 5MT Mandrel, (Plus 3MT / 5MT sleeve ) Induction Hardened Bed, came with 6" 3 and 8" 4 Jaw chucks, Faceplate, Steadies, and Centres, at a quarter of the cost of the 4MT Myford., delivered.
Screw on chucks, but with retaining dogs, so quite safe to run in reverse.
That was 17 years ago. Am I happy with it? Generally Yes.
Problems?
Noisy tumbler gears, replaced under Warranty, but still noisy so replaced (Cost £40+ ) with Nylon gears.
Thought I had severe belt slip. It was actually too small a dimple in the shaft for tensioning the secondary belt. Fairly easily rectified. No problems since. Original belts still going strong!
Mods / Add Ons? Yes
Modified the acrylic chuck guard to clear the Faceplate.
Removed the acrylic guard over the Toolpost, 'cos it got in the way without improving vision or access.
Moved the Thread Indicator Dial to the Tailstock side of the Apron (Modified the shape slightly to clear bearing block for the Leadscrew and Power Feed Shaft. The object was to maximise Saddle travel. By doing this, I made myself problems later!
Made a 80T gear to halve the feed rate. This meant destroying the knob when relocating the closure for the gear cover, and drilling and tapping anew hole for the stud..
Modified the Fixed Steady to keep the clamp bolt captive. A fairly simple job, well worth doing.
Made a Fourway indexing Rear Toolpost to match the Front Toolpost (Bolts nicely to the T slots in the Cross Slide and improves parting off )
Made a Cetrte Height Gauge. Essential since I have used Tangential Turning (Diamond ) Tools for several years.
Made a Micrometer Saddle stop. Useful.
Because of my carelessness, had to make and fit a new 13T gear for the Saddle drive. Modified the Rack to prevent recurrences. (Found out the hard way that the chart for HV6 Rotary Table contained errors! ).
What has it been used for?
Turning, Facing, Boring, Drilling, Reaming, Knurling, Screwcutting (Finest was 40 tpi, coarsest was 4 mm pitch) Flycutting / coordinate drilling reaming using a Vertical Slide intended for a Sieg SC6
Have never needed to remove the gap, although came close when swinging a piece of Cast iron, just over 6" diameter, 5" off centre.
Tooling used.
HSS in the Diamond Turning Tool, and for screw cutting, Carbide for roughing, (and hardened materials ) boring, spherical turning
If you have read this far without falling asleep, HTH
Howard