Mystery rusty object found in Swildon’s
- Thread starter PeteHall
- Start date
Looks like a Rawl drill
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PeteHall
Moderator
That looks like it Ian. Thanks!Looks like a Rawl drill
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I'll maybe give it a clean up some time
Otherwise known as a Star DrillLooks like a Rawl drill
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alanw
Well-known member
I used this technique on a rusty knife I found a very long time ago in Ireby Fell
www.instructables.com
Electrolytic Rust Removal
Electrolytic Rust Removal: Electrolysis can remove rust like magic. I had read about this several times, and finally decided to give it a try on a recent project. I was restoring an older cuckoo clock and found that the battery had been left in, and severely corroded the bat…
www.instructables.com
PeteHall
Moderator
I was just going to tap the worst of the rust off with a hammer and cold-chisel, then attack it with a wire wheel on an angle grinder; the same way I treat my Land RoverI used this technique on a rusty knife I found a very long time ago in Ireby Fell
Electrolytic Rust Removal
Electrolytic Rust Removal: Electrolysis can remove rust like magic. I had read about this several times, and finally decided to give it a try on a recent project. I was restoring an older cuckoo clock and found that the battery had been left in, and severely corroded the bat…
I've had success on old tools by using molasses (aka black treacle), watered down 10:1. Just leave the part submerged in the solution and check daily, and give a swish around. Slow acting but easy and quite safe. Leaves a pleasing black/gunmetal finish.
You would still need to knock off the worst of the rust.
You would still need to knock off the worst of the rust.
JohnMCooper
Active member
Used to use this to insert 1/2 inch solid forged eye hangers. Think this was a size G drill. Rather rusty and unused nowadays!
Maj
Well-known member
White vinegar works really well. But you do need to oil it or protect it as soon as you take it out otherwise the moisture in the air will cause it get a fine rust layer.I was just going to tap the worst of the rust off with a hammer and cold-chisel, then attack it with a wire wheel on an angle grinder; the same way I treat my Land Rover
Citric acid is my go to for that kind of thing. Like vinegar, the part needs protection afterwards to prevent flash rusting.
@IanWalker do you still get problems with flash rusting using molasses, and does the black finish rub off?
@IanWalker do you still get problems with flash rusting using molasses, and does the black finish rub off?
I have not found flash rust to be a problem, but then I wash the parts and oil them. The black stuff seems to be a mix of treacle and converted rust products. Most washes off well, and I don't mind the patina that remains. I will see if I can get some photos
Caution though - if you forget about the part and leave it in for many weeks you may find it totally black, porous and thin! It is slow acting but still needs watching. I would say this is comparable to electrolysis and acid in that regard.
Best bet is to try it on a rusty nail, or bolt, or neglected file, and see what you think for your application
I have used black treacle from the supermarket with good results, but if doing large parts I would go to a farming or equestrian feed supplier as they sell molasses for animal fee in bulk
www.moleonline.com
Caution though - if you forget about the part and leave it in for many weeks you may find it totally black, porous and thin! It is slow acting but still needs watching. I would say this is comparable to electrolysis and acid in that regard.
Best bet is to try it on a rusty nail, or bolt, or neglected file, and see what you think for your application
I have used black treacle from the supermarket with good results, but if doing large parts I would go to a farming or equestrian feed supplier as they sell molasses for animal fee in bulk
MVF Molasses - 5L
MoleOnline.com is the new website of Mole Valley Farmers the Agricultural Supplies and Equipment Merchants
www.moleonline.com
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