Posted by Frances IoM on 23/12/2016 21:44:28:
choice depends quite a bit on what you want to do with it
I have a Warco WM180 – fine, the belt drive has saved me a few times during the still protracted learning when dig ins has struck – it will screwcut RH threads fine but not easy to get it to do LH – there is no mounting mechanism (eg T-slots)on the cross slide thus using a boring bar between centres for aligning bores in mounts is not easy
– the leadscrew is not easily disengaged so you can't use a handle to do fine movement – the chuck is held by 3 x 8mm screws so can happily reverse but the single banjo restricts altering the fixed relationship between the chuck and leadscrew – however plain turning is fine – Warco generally include 3 + 4 jaw chucks + a few other tools
Sounds like a Chines lathe to me – in several respects.
Some models do have a sort of T slot arrangement but none as far as I am aware have a traditional one. Just 2 on the outer edges of the cross slide. Use them and the cross slide may distort and seize up or go loose unless parts are rather flat. Once upon a time Neil made one for his mini lathe – on it I believe. There can't be much call for them otherwise some one would be selling them. The traditional ones will reduce the max dia over the cross slide – bad for the numbers game.
The lack of a handle on the end of my none chinese lathe leadscrew has never caused me a problem. There is no scale on the rack feed, i don't generally use the screw cutting indicator to do a similar thing but it does have a micrometer bed stop. I usually just measure and then finalise the size one way or the other depending on how accurate it needs to be. A 6" rule is usually adequate. Sometimes it needs to be longer. Sometimes the scale on the end of the rule is more appropriate.
I have had lathes with a handle on the leadscrew including a Myford. Can't say that I miss them.
The absence of any sort of screw cutting gearbox even ones that can only cover a very limited range and need change wheels is as I see things a serious disadvantage because it's such a pain to change feed rates.
The alternative is a used traditional lathe but for many there is no saying what it will need doing to it if it needs to be in very good condition.
John
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