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Left Hand Trapezoidal Warco Lathe

Tail stock spindle

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Ian S C03/11/2015 09:18:33
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7468 forum posts
230 photos

Your problem is the length of the 2MT sleeve(Is your's one with a tang?), it should be an open one.

Ian S C

KWIL03/11/2015 09:34:49
3681 forum posts
70 photos

Trevorh, Nice to see that there are two of us who support the "insert" approach to trapezoidal threading and that you are joining us, if nothing else you will get consistency in thread shape which is more difficult to achieve in home made cutters without a shadow graph!

Good luck with your trial.

K

Trevorh03/11/2015 09:39:33
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316 forum posts
89 photos

Thanks Kwil, it will be a first on both accounts for me.

Ian, never thought of that and yes I use both types, typically when using a blacksmiths drill of say 20mm + ,the sleeve has the Tang

So I have actualy created the problem myself by lack of understanding, the tang is approx 20mm long and would definately be the cause of the ejecting early.....oh B*gger

cheers

Ajohnw03/11/2015 09:42:00
3631 forum posts
160 photos

See what you mean on the steady. I would have made a lot of noise about that. In some way warco have people by the short and curlies when they sell something like that. People may need a travelling steady at some point and probably wont find out until they come to use it. Warco will know about it so should organise replacements.

There is an answer to that sort of thing when it can be corrected. Small claims court for the work you had to put into it. This sort of thing could also result in more honesty relating to lathes - not much in the improvement line though as costs could only be pushed up so far before they wouldn't sell any. Small claims court? They wouldn't stand an earthly of winning a case like that.

Really steadies with flat blades are much better. Then people can do what I do. Every time I use one I think must get round to fitting ball races to the end and never get round to doing it. Some do and it results in a considerable improvement in usability.plus a reduction in capacity. I've only ever used one lathe where this had been done - probably when it was manufactured. There would be a need to think about threads on the travelling steady - maybe more than just one size of bearing.

John

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Trevorh03/11/2015 10:10:05
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316 forum posts
89 photos

Hi John,

Unfortunately I fell into the usual trap of not actually checking the parts until I needed them - just unpacked and stored, by the time I had use of them it was quite some time after the purchase of the the lathe.

I have since modified them to actually work now but as you state its not something i should have to do

Trevor

Ajohnw03/11/2015 11:24:00
3631 forum posts
160 photos

Sounds like it's another thing to check along with can the lathe turn up to a centre with the tool in the normal position.

angryI took a work friend up to chester m/c to help him choose a lathe and also look for myself. The centre aspect ruled out all of the machines they had which looked sensible and were the size I wanted. What people seem to be unaware of is that once they have sold a few retailers are fully aware of any problems with them. Probably earlier on actually.

laughFriend - I said no not a baby lathe. For what he wanted to do a mini would be minimum. What did he do? Buy a baby and then complained about it a few months later. He concluded that it was ok on plastics with some buts. A warco 180 would have done but he would probably have come to the conclusion that a 240 would have been a better option later given what he wanted to do with it.

John

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Trevorh05/11/2015 09:33:14
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316 forum posts
89 photos

Just a quick update - the inserts arrived yesterday - purchased 2.0mm and 3.0mm mainly because I haven't decided if I want to stay original on the screw yet and will need to make a nut anyway to go with it

So mounted a 1" bar for practice and machining away from the chuck for just a short distance to see how things went I was pleasantly surprised at the first time results, it actually looked like a lead screw....

Then noticed that the pitch didn't quite look right - Note to self first check that the gearing is set to match the insert....DOH had it set for 2.0mm pitch and used the 3.0mm insert

But at least I know I can now cut a LH Trapazodial Thread - Take that Warco..

Now to practice some more before working on the actual replacement blank shaft I made earlier

Good call about the inserts

cheers

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