Foo - Removal of rust on a semi delicate object
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phantomcow2
02-06-06, 02:58 PM
I got some beautiful ground ballscrew at my scrapyard today :D :D :D
But there are some spots of surface rust on it. Typically i would just sand it off, but I would like to preserve the surface shiny finish if at all possible. Can anybody give me some advice on how to remove the rust, without scratching the screw or anything?
Break out the grinder! :D
Cigarette ash & olive oil... make a thick poltice and apply it to the area run the nut over several times, wiping the rust off and thinning the poltice as you go.
Works like a charm.
EDIT: You might try toothpaste, not the gel kind but something like the good old fashioned white Colgate creamy stuff. Leaves your screw minty fresh. :)
phantomcow2
02-06-06, 04:10 PM
Yea steel wool was my thought. The past is a new idea to me though
phantomcow2
02-06-06, 04:16 PM
oh, paste. :)
sngltrackdufus
02-06-06, 04:21 PM
oh, paste. :)
that i guess will work too , i had the rust cleaned out of my pipes with that once :)
phantomcow2
02-06-06, 05:46 PM
toothpaste got most of it off, sure beautifies the screw though. Steel wool will not work because I cant get it into the grooves of the screw. I still have a few specks left that the toothpaste would not get off
brass wool won't mar the finish as much.
pc you should ask this in cranky and vintage they love this kind of stuff!
its what we live for.
phantomcow2
02-06-06, 06:01 PM
actually thats a very good idea! Thanks lotek
phantomcow2
02-06-06, 06:02 PM
I will just have to pretend its an old bike i am trying to repair :D
Use Naval Jelly, it's a mild chemical etch that will disolve the rust. Follow the directions on the bottle and it should take it off just fine. It was developed by the navy (hence the name) where rust is always a factor.
Michigander
02-06-06, 06:09 PM
Extra fine steel wool is a good bet for a delicate surface (along with the above mentioned solvents). I've used it on my car with good results.
DannoXYZ
02-06-06, 11:54 PM
I use naval-jelly all the time on auto-restorations. Works great on the rust only, it's not abrasive so it won't grind down any good metal.
phantomcow2
02-07-06, 04:38 AM
Naval Jelly, is this a hardware store item?
Cut a large onion in half and rub the onion over the rust. I learned this on "How clean is your house" and tried it....works like a miracle. Have half a lemon on hand to remove the onion juice smell...wipe with a clean cloth and all gone.
Naval Jelly, is this a hardware store item?
Well, I always use Navel Jelly in my...oh , wait a minute. :eek:
Yes, PC, it is a hardware store item. Comes in a Pepto-Bismal pink bottle.
halfbiked
02-08-06, 03:18 PM
PC2- do yourself a google search on removing rust with molasses (slow, but surprisingly effective) or via electrolysis (very very cool). The mr perfesser in you would really dig the electrolosys thing.
All you need is a large several hundred farad capacitor and a tank of nitric acid...
misteralz
02-10-06, 06:27 AM
Lemon juice, just wipe it off afterwards. T-cut or Brasso also kick arse.
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