[pikolo]

hello! Some days ago i went to tha jank jard so as to buy cheap metal...there was a lathe there the one shown in the picture and the guy told me that he would give it ot me for 400 euros...
so would you buy it ? is it worth it trying to clean it and make it work? Is the price good for what it is?thanks alot for your time .

[he1957]

It looks very rusty with missing parts (tailstock quill, tool holder). I'd guess the ways are pitted or will be when you get under the rust, along with the main spindle chuck.

If rust has found its way into the motor and electrics it may be somewhat hazardous to attempt to power on without a major clean-up.

I have no idea of pricing where you are but 400 euros sounds like a lot for a what it looks like.

What's the going price of scrap metal per kg - guessing it weighs about 400-500 kg?; that may be more than what it's worth - maybe?

Personally, I'd leave it where it is unless I was looking for some hard to find parts that _might_ be refurbishable :-)

[pikolo]

hi friend and thanks for your answere!i have a toolpost from another big lathe...i own a mini lathe so maybe i could make some of the parts?it is similar to this lathe https://www.blechzulieferer.com/prod...ed+21217/offer and in this listing it says it is 1300 kg.... https://www.machineseeker.com/Lathe-420-970-mm-EMAG-UMA17/i-1981348

[pikolo]

Hi there friends So i did it...i bought this lathe...i know i know....but it is a hobby for me and i love to rebuilt things...also i couldnt let it to to scrap...So with the transportation it cost me 350 euros....but the iron of the machine costs more so if i dont like it i can return it and for sure take my money back or more...I already started to derust it ith electrolysis...i also took it apart and i found that the thing attached to the gearbox has something broken in it,,,you can see the red arrow in the pics,...i found some kind of metal balls inside it. So i am thinking of converting it to cnc BUT i donw know how to do it...i have tried to find a walkthrough or something but couldnt....any help?Also if interested i may start a thread with the restoraton..

for the pictures scrol down in this page dissasembly - Album on Imgur

[hfjbuis]

I have converted my mini lathe (80 mm chuck) for about $100 to CNC (without pc). It works really great and I am now converting my second lathe (160 mm chuck) the same way. I documented the retrofit. Have a look at Mini lathe 100 $ CNC conversion and modifications - Metal Worker Tools

[pikolo]

Wow!!!!I will definately study this thread thanks alot ! I am a noob in lathe cnc and i think this is going to help me!Thanks alot!!!I see you did it this with three stepper motors! Even on the spindle howe much torque should the spindle has?cause the lathe i want to convert right now has 5.5 kw motor ith speed reducton...i should remove this and attach a stepper? A 425 oz stepper would be sufficient for this?

[he1957]

That second URL you posted for a working, (almost) ready to use machine looks like a better deal to me.


Although anything is fixable, it boils down to the time, effort and cost of fixing it and whether it's ultimately worth it to the fixer :-)

[pikolo]

i just read in some info i found that this lathe doesnt do threads,.,,,no threading can be done on this lathe :S this is the worse i thnk....even my mini lathe can do threads,,,why to have a lathe if you cant thread on it??

[victorofga]

think on to making parts for a machinetool can be timeconsuming, or very expenses if you try to order from machineshops

the first picture you posted, 100 percent sure cost way more than a same sized new one

the second picture , better looking but this is an old kind of lathe..
you can set up for seires..


I would say if oyu have job coming plenty.. make the math the go out for loan and buy a machine..

either way manual or cnc you can afford


heres a link

please note ocean freight is about 800 to your port


https://www.aliexpress.com/item/CQ62...AbTest=ae803_3

[pikolo]

thanks for your replies! i use a lathe as a hobby i dont earn money from it...more i would say i spend on it ...i though that from building a milling machine made of concrete or a lathe made of concrete this lthe maybe wouldbe better? but i have no way or tools to scrape the ways and alla the accesories for doing this are way too expensive..too pitty a cant do it with an angle grinder and something really flat :P

[ger21]

I wouldn't take that machine if they gave me 400 Euros with it.

[pikolo]

xaxa that was really funny :P liked it xexe!!a friend of mine told me the same thing more or less..

[deadlykitten]

so would you buy it ? is it worth it trying to clean it and make it work?

hi pikolo, if you wish to go this way, you have to be sure that you don't lose much, or at least you don't lose more then you expect

- if you don't have time & money, so to fix that machine, maybe is better to leave it there
- if you have time & money, and you wish to fix that machine, you may end up with it, unable to sell it to make profit, unless you find some hell-of-a-deal

- if you wish to fix it, think about what resources it requires : maybe you can spent your time & money with your friends, etc, and in time, you may find a better deal


no one complained about spending money on women, cars and alcohol

many complained about getting the wrong cnc / kindly

I wouldn't take that machine if they gave me 400 Euros with it.

i would gladly consider this offer; i will keep the $$$, and sell the machine back to the junkyard

that is easy money gerry

[pikolo]

well...i was thinking of making a concrete lathe so as to have something to remove metal fast with...i think this i way better tha a concrete lathe homemade and if the guygives it ot me to abetter price i may but it....i said may cause i would like to make some back gears so as to make it possible to cut threads..i have a cnc homemade one..momus with ballscrews much better ta momus now an it can cut aluminium gears...i also have an old very big toolpost

[pikolo]

Than could you maybe show me what sensor will i need to put ti the spindle?I can buy from www.ebay.co.uk I have built a cnc router that can mill aluminium too...but the cnc lathe is not something i know alot about and not much info on the web with how to do it with mach3 ...in a youtube video i found proposing this https://www.ebay.co.uk/itm/New-OMRON...v/121350357120 .The way you attached the spindle to the stepper motor when you need it is a great idea and i think i could maybe do this if i can make two aluminium gears in the cnc one for the stepper and one for the back of the spindle.the one on the spindle could have threads on it and screw on the threads of the spindle maybe? But if there is a more simple way to cut threads then i am all ears!!

[hfjbuis]

I don't know if mach3 can handle this 2000 PPR encoder output for threading, the inputs on Mach3 (BOB) are a limited. Because you have a heavy motor and gearbox, your spindle speed will not change a lot at the start of a thread so i think one simple index pulse will do. For this you can use a proximity switch. They come in different output options. But just for an idea, have a look at this one on eBay. It can be used on optocoupler inputs (- side) and logical inputs. If activated, it switches the input to GND https://www.ebay.nl/itm/NJK-5002C-Pr...uETz:rk:1:pf:0

[pikolo]

The machine is almost done and i am trying to convert it to an electronic gearbox so as to be alble to cut threads....Some questions that i would like to be answered if it is possible
Would a 8 Nm closed loop servo motor have enough power to drive the carriage? I am also thinking of connectng a ballscrew to the carriage and wondering will it be possible to move the carriage by the handwheel if a ballscrew is attached to it ?I mean i would like to use it as a manual lathe too

[wizard]

The only thing you can do here is to inspect the lathe. If there is enough functionality there then it might be worth a rebuild. The fundamental problem is the unknowns, take the time to find out the mahcines weight and don't pay more than scape metal prices for it.

[pikolo]

dear friend the machine weights 1300 kg...it is very heavy and the price is 0.3 euro for scrap metal ....so 390 euros and i arranged a price for 400 euros even less maybe i dont know..

[CNCKITMILL]

If it were free it would still not be a "good buy" Time is valuable and the number of hours it would take to fix this lathe is just not worth it.