pressbrake1
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I’ve got a Spencer
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Screwdriver
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Evaporust is a cocktail of chemicals which work on the principle of chelation. A specific type of modified iron ions(?) which is a different process to reduction with acid. This is way beyond my actual knowledge of chemistry so all I "know" is that it's different. Plus I am pretty sure I remember reading it is PH neutral so - not an acid!
Pete.
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I would have got all the ways of that lathe de-rusted and shiny in less time than it's taken to produce this thread, and without the use of any de-rusting chemicals or pickles too.
This is not complicated stuff. A dulled carbide scraper would take care of the majority of it and the remainder could be rubbed off with wire wool or fine scotchbrite.
This is not complicated stuff. A dulled carbide scraper would take care of the majority of it and the remainder could be rubbed off with wire wool or fine scotchbrite.
Barking Mat
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Scotchbrite, those green plastic ones, in oil, did mine a treat.
tflnemesis
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A lot of people have had really good results from using 3d printed gears, Mrpete222/Tubalcain printed a change wheel for one of his and purposely managed to stall the machine without breaking it.
This video:
3-D Printed Gears for Atlas Lathe
This video:
3-D Printed Gears for Atlas Lathe
Agroshield
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...whom you use for removing marks.
Seadog
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Screwdriver
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Yes, I certainly wouldn't be doing anything with it that involves plastering it with acid or strippers.
Knock it into a bucket then carefully restore each part individually. Having said that, I would definitely suggest not moving any of the controls or sliding parts until it had been taken apart. No telling what's under all that grime and rubbing those crusty dry surfaces together could do a tremendous amount of damage before you even start.
dieselsamurai
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It beginning to sound like its going to be another major project.....
Screwdriver
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You might get lucky and it needs little work but a cursory glance suggests it's been stored dry and without oil on the mating surfaces, bearings or bushings, operating those parts as it stands could cause damage. Then again, hose the thing down in WD40/ACF50/diesel/<whatever> and it might be fine as-is.
For £100 - nice problem to have...
Munkul
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It sounds like you need to get it shifted to your garage, and set-to with some scrapers and wire brushes!
You're not going to damage it more than it already has been, and it's a long way off "dead" like some lathes are.
dieselsamurai
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Ive just spoke to my friend and looks like it will be heading my way , apparently it wasnt rusty when he got it but its stored in a ex army workshop tent and the side blew up so it got wet 
Im thinking just to cobble it together for facing/turning I could just set up a belt drive from the main spindle to the gearbox until I get gears cut im not too bothered about screwcutting with it right now just so I can use it once its derusted good idea/bad idea ?
Im thinking just to cobble it together for facing/turning I could just set up a belt drive from the main spindle to the gearbox until I get gears cut im not too bothered about screwcutting with it right now just so I can use it once its derusted good idea/bad idea ?
Munkul
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Just take pete up on the offer of making a couple of gears 
Requires little effort on your part and will be a sound investment.
...assuming nothing's wrong with the gearbox internals... but if they spin freely in all gears then happy days!
Requires little effort on your part and will be a sound investment....assuming nothing's wrong with the gearbox internals... but if they spin freely in all gears then happy days!
Agroshield
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Once you have it, look at the screwcutting chart on it and work out what gear or gears are missing. If it happens to be one for the majority of common threads, an option is two timing pulleys and a toothed belt sized to give the same ratio (it might reverse the feed direction, but that's a minor problem).
dieselsamurai
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Well its been a while as I was trying to buy a better lathe he had but the tent blew off it this weekend so im taking delivery this week! Im sure I can clean up the lathe bed im just hoping there are no issues inside of the headstock or gearbox but will find out soon 
I found an manual for it in Hungarian so I guess thats a start
I found an manual for it in Hungarian so I guess thats a start
dieselsamurai
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If i strip it down and put bits through the citric acid tank do you think it will affect any surface hardening it has ?
Screwdriver
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Electrolysis would be safer but light surface rust should wipe off after a good soak in WD40/diesel/paraffin etc. Wipe it down with an oily rag.
There really shouldn't be anything worse than light surface rust. I think you've bagged yourself a diamond in the rough here.
Really all depends on the condition of the bedways and the spindle bearing(s).
<edit> citric won't attack hardened steel any more than it would regular mild steel but it is an acid so it will etch any surface eventually. Rust is easier for acid to remove (lit. reduce) but I would be wary of letting it eat away at a precision surface until you have exhausted less aggressive techniques.
There really shouldn't be anything worse than light surface rust. I think you've bagged yourself a diamond in the rough here.
Really all depends on the condition of the bedways and the spindle bearing(s).
<edit> citric won't attack hardened steel any more than it would regular mild steel but it is an acid so it will etch any surface eventually. Rust is easier for acid to remove (lit. reduce) but I would be wary of letting it eat away at a precision surface until you have exhausted less aggressive techniques.
dieselsamurai
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I did experiment with electrolysis a few years back but tends to be line of sight to the anode so citric acid worked better for me , I have a spare battery charger and can give it a go again. What about the chucks ? I tried one a few years back for my raglan Lathe and using citric it dissolved some of the surface of the main body the jaws were fine and it is accurate but looks terrible
400-ascona
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On hardened components you need to be worried about hydrogen embrittlement if you use electrolysis. This wont be much of an issue on large components however.
