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Question Writing on worktops

1 year 2 weeks ago #41273 by Cookaburra
If any of your teachers are rude enough to scribble all over your Trespa worktops and then just give them a cursory wipe afterwards with no regard as to whether it actually wipes off or not, what solvent, if any, do you use to get it off? The worktops are starting to look very messy. I've used ethanol. methanol, propanol, propanone, Xylene, Trichloroethylene, bleach, cif (not all at the same time). Oh and Silvosol. Nothing has shifted it

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1 year 2 weeks ago #41274 by D.B.Ferguson
Our worktops are wood, but I thought I would try my google-fu and 1st item is:
www.trespa.info/Images/codeV3064_Cleanin...2011_tcm37-43494.pdf

hope this helps

Technicians: providing solutions and more.

David Ferguson B.Sc.

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1 year 1 week ago #41275 by Cookaburra
Thanks DB but I have tried the googling myself. I suspect that over the years the “non-porous” nature of Trespa gets worn down by acids etc and the ink is no longer just on the surface. If we had wood it could be sanded out. I’m probably just going to have to give them a talking to!

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1 year 1 week ago #41276 by Baldilocks
My 'Go-to' cleaner is Baldi's Brew - 70% alcohol, 30% purified water + a few drops of conc washing up liquid (just enough to maintain a lather).
The latest revision of the recipe involves a good proportion of the alcohol
being methanol because some permanent markers won't shift without it.

If this was black felt-tip then the offending shadow may come from lampblack (fine carbon dust) or from magnetite (Fe3O4). Both are very fine and can drop into the microtexture of the surface. The only real way to remove it is by abrasion, but not with sandpaper! Try Windolene cream, Brasso or TCut in the first instance, and with great care.

Ian

“Do not believe everything you read on the Internet.” -Abraham Lincoln
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1 year 1 week ago - 1 year 1 week ago #41278 by bsimmo
Our Trespa generally wipes off fine with water but then it's only about 10 years old.
The Corian though a good few years old is much easier.
But we do use solvent if needed.

The recycled preproom Trespa that is decades old I have no idea as I don't write on it other than in pencil.

The kids do get a lot out of the Teachers (Physics mainly) writing on the desks to label thing etc.

----
Anyway
My usual mix is the IPA with a bit of water mix and dash of washing up liquid, but I also add Ethanol if there is some going to waste and *always* a small amount of Butanol, it's the butanol that does most of the hard work with pen etc. Unfortunately even a small amount smells a bit.
Ratios are not exactly important, other than mainly IPA and/or Ethanol.

find an old whiteboard cleaner spray (or other spray) and use it like that.


70%Ethanol/Water should be easy to find, all Biologists should have it already mixed, if you don't have Technicians Special Cleaner to hand.
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1 year 4 days ago #41289 by Kasey
I used Barkeepers friend on ours - left it to do it's work and then scrub off.
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1 year 2 days ago #41296 by bsimmo
We have that in every room and plenty of extras.
It is slightly abrasive though.

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1 year 1 day ago #41304 by Cookaburra
I presume the IPA is there for a quick pint while you do the job! Wonder if a gin and tonic will work as well

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1 year 1 day ago #41307 by bsimmo
G&T only works when the more able kids do it.

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1 year 16 hours ago #41310 by Cookaburra
LOL :)

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11 months 2 weeks ago #41326 by bluek
Try those magic sponge/erasers they are brilliant at removing pen and stains from all sort of surfaces
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