MDF + Clearcoat finish...

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Hi all,

I'm finishing my 1st DIY project these days, and want to finish them in shiny black.
They're made of 18mm MDF.

A friens of mine said, why not use 2-component epoxy to (start) the finish(ing with)? It'll make them as hard as a nail (Blame me, dutch expression.. ;-) )

So I convinced myself, thinking it'll harden/stiffen the cabinet, thus reduse resonance etc... good thing (tm).

Went to the local paintshop, the bloke told me to use 'Sikkens PU Clearcoat': Almost as tough as expoy, but easies handling && cheaper. Once again convinces, I bought a liter of hig-shine (satin?? Hoogglans in dutch..) black PU Clearcoat.

Now, how should I proceed? Anyone here some experience with this (kind of) paint? Should I apply a coat of (ordinary) 'ground-layer' (primer, innit?) first? Or maybe 2 or 3 ?
P 200 in between.

Shoud I finish after 2 layer of ClearCoat with some transparant laquer? 3 layers or so?
p 400 or p 800 in between?

I'd like them to be as black as a grand piano, and just as shiny!

If anyone could give me some advice, I'd be thankfull!

PAul
 
Always prime MDF and usually more than one coat, maybe two or three, sanding between each coat to get rid of every tiny bump or dip. Once it's perfectly smooth then you can think about applying your gloss black and it'll take several coats of that also. It's a long hard process to get the "piano black" finish.
 
bibster said:
Once again convinces, I bought a liter of hig-shine (satin?? Hoogglans in dutch..) black PU Clearcoat.


hoogglans = glossy or high gloss

Does this stuff consist of two components to be mixed or only one? If one, does it say to use water or organic solvent for thinning? How can a clearcoat be black?

Groetjes,

Eric
 
How deep of a shine do you want?

If you want a truly piano black then carefully sand and fill the boxes. Paint them black with a good enamel. Then spray them with the two part epoxy. It's the only way to go. I once did a gloss black set of cabinets with laquer. It took over 30 coats!! and enough sanding to make you want to stop sanding forever. Now I use the method I explained above. Older and wiser.

Mark one time professional cabinet maker
 
@Capslock,

It's one component stuff. Hardens by the humidity of the air.
And, yes indeed, a CLEARcoat being black sounds rather odd...

It's a yachtpaint, made by sikkens. As I said, I thought it'd help stiffen my cabinets, so it being black only helps me toward the final color.

Anyhow, after all these helpfull comments from everyone, I'll start with sone 2 or 3 layers of primer, carefully sanded in between, and the some more layers of this PU clear(black)coat, and finish then with transparant laquer.

A pity I just don't happen tho know someone with a spray-rig...

Thanks everyone for your comments!
 
The way I did it a couple of years ago was first primer, sandpaper 240, black paint , sandpaper 240, black paint, sandpaper 240. then clear yaught laquer, sandpaper 240. yachtlaquer. wait a couple of weeks till the laquer is really hard then
waterproof sandpaper 240 (with water)
waterproof sandpaper 400 (with water)
waterproof sandpaper 600 (with water)
waterproof sandpaper 800 (with water)
Finaly car polish (comandant or something you will find it in Holland at the Halfords). And polish till you think it looks good or till you look :whacko:
This gave a pretty good result. Not completely like a piano but close enough.
 
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