[TheForge] food grade coating

[Wayne Ackman]

I sent a reply earlier to Ries, but it hasn't shown up.

In any case, these are not the food prep counters.  those are in the 
kitchen and are stainless.
These are for the ordering counter and where the condiments are kept.  
But I would really like to
have them sealed properly.  Would polyurethane work?

Thanks for all the insights,  I'm still searching for info online, but I 
will pass your comments
on tomorrow at the job.

> Bruce . <mailto:freemab222 at gmail.com>
> June 24, 2014 at 4:52 PM
> Here's an MSDS for B/C PermaBlue. There might be more than one product
> under that brand name, so try to find the one you used. The supplier is
> required by law to provide it, which they usually do these days over the
> Internet, for you to print off.
> https://www.birchwoodcasey.com/getattachment/Resources/Safety-Data-Sheets/13322-13325-Perma-Blue-Paste-Gun-Blue-2012.pdf.aspx
>
> Note that that formulation contains selenium, which probably makes it a
> no-no for food use. (That's not a certainty, because it may be that the
> selenium residue on the surface would be lower than the legal threshold,
> whatever that is. Bad bet, though.)
>
> I'm not knowledgeable in the field either, but if a glossy brown or black
> finish would do, then I recommend the one finish that's generally regarded
> as safe for food: A thin coat of polyunsaturated oil, followed by heat
> (350 - 400 F for an hour works). If the metal is shiny, this will be a
> deep cocoa brown which often looks ugly. If the metal is black, it will be
> a lovely shiny black. The shine could probably be rendered to matte easily
> enough. Unfortunately, this is not a hard finish and will scratch.
>
> I note there's a discussion of this topic on Iforgeiron.com, but I didn't
> read it. There's a lot else accessible through Google. It's a real can of
> worms to be working with surfaces for restaurants. There are specific FDA
> regulations. You don't say whether these are food preparation surfaces, or
> what. I wouldn't touch something like this without a sign-off from my
> attorney and a check what my insurance will cover.
>
> Have you considered covering the surface with a transparent, food-grade
> plastic sheet, such as acrylic or polycarbonate?
> http://www.professionalplastics.com/professionalplastics/FoodProcessing-HandlingBrochure2011.pdf
>
> Bruce
> NJ
>
>
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> Wayne Ackman <mailto:stryker at vulcanpro.com>
> June 24, 2014 at 3:08 PM
> I've been working on a restaurant.  Made them some metal countertops 
> that they wanted to have blued.
> We used PermaBlue, which turned out decent.  I then sprayed a couple 
> coats of urethane on the counters.
> The restaurant hasn't opened yet, but someone spilled something (soda 
> supplies?) on the counter and it
> ate right thru the finish.  This has opened the concern about what 
> kind of coating we can put on the counters
> that would furnish a food grade finish.  Has anyone done this?  And 
> have any suggestions?
> Thanks for any help.
>
> Wayne
>
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