How to remove cement?

NeXT Computer, Inc. -> NeXT Black Hardware

Title: How to remove cement?
Post by: Jenne on October 30, 2007, 10:53:10 AM
My Cube reminds me a bit of that Berners-Lee Cube because there once was a little label cemented atop of the front grill, some sort of very, very nasty cement indeed which left some marks. While trying to get rid of that cement I noticed that alcohol, lighter fluid and several other "regularly used" light to mid aggressive cleaning fluids did not work so the cement rests still where it is - and rubbing the case of the Cube too much destroys the silk touch.

So has anybody in here an idea how to remove that bugger?

This of course is in a direct row to the paint options mentioned in another thread ;-)

Thanks again!

J
Title: How to remove cement?
Post by: scarecrow on October 30, 2007, 12:01:29 PM
try steam
Title: How to remove cement?
Post by: helf on October 30, 2007, 03:26:41 PM
ok, thisll sound crazy... tried using a little bit of gasoline (petrol) on it?I've heard of people using that to get stuff off things that nothing else would work on.
Title: How to remove cement?
Post by: Jenne on October 31, 2007, 01:05:03 AM
Petrol? Isn't that more or less like zippo lighter fluid? But I will try that, maybe this works. I should close the garage door while sucking some drips of my BMW's tank  :lol:  :lol:  :lol:

Steam..... hmm....... maybe this will work, too. But I fear this will do much more harm to the case because the cement is somewhat "assimilized" to the case. I've tried to remove it with a sharp cutter tool and very little pieces broke off taking some paint with them. The odd thing about this cement is that it is hard as a rock, I can not squeeze it a little bit at all. How shall I describe it better?

Imagine yourself using one of those hot glue guns with these white glue sticks to put into. You can squeeze those sticks at least a bit. Now drop that hot cement on glass and wait about 20 years: You can't remove it, the cement has turned a bit yellowish, can't get removed from the glass plate. When using simple physical force (like "cutting" between glass and cement) the are only very few splinters breaking off leaving the glass stained. Know what I mean?

J
Title: How to remove cement?
Post by: helf on October 31, 2007, 08:35:18 AM
oh, wow, I totally read over "lighter fluid"... oh well, petrol might still be an option :)
Title: How to remove cement?
Post by: Nitro on October 31, 2007, 10:44:38 AM
You might try getting the cement wet by placing a wet towel on it and letting it soak for a while.  I had a cube with property sticker glue that had turned hard as a rock.  I was able to remove most of it by getting it wet and carefully scraping it with a small flat blade screwdriver.  Another thing to try is a little bit of heat to see if that will soften the cement.
Title: How to remove cement?
Post by: pentium on October 31, 2007, 02:26:58 PM
Well so long as you do not contact any plastic with this stuff I find Goof-off works fine on metal surfaces. Using it on plastic makes a sticky mess that's almost impossible to remove.

EDIT: Just thought about it but have you tried a Mr. Clean Magic eraser?
Title: How to remove cement?
Post by: Jenne on November 01, 2007, 12:37:55 AM
Thanks for these hints pentium, but I fear that over here in Switzerland those products are not sold, at least not with those names You mentioned. :(

I will try Nitro's towel treatment, seems to be a rather gentle way in my oppinion.

J
Title: How to remove cement?
Post by: idylukewild on November 02, 2007, 04:02:34 PM
I have been able to remove all adhesive property labels with "mineral spirits", also called "Stodard solvent" or "white spirit" (in Europe). It is a petroleum distilate like gasoline or lighter fluid. Also sold here as paint thinner. On NeXT hardware I apply the mineral spirit after trying to peel off as much paper as possible so the fluid will soak through. Usually it works right away and I can remove the lable with light rubbing with a paper towel. Sometimes I need to let the fluid soak for a while by using some paper towel padding saturated with mineral spirits. It has never failed for me, but I have not run into any 'solid' glue. After using the mineral spirits to remove the label I gently wash the surface with liquid detergent and water to remove any residue.

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