Author Topic: Would like to attempt Piano finish/high gloss  (Read 1831 times)

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Offline JCLP

  • Posts: 743
Would like to attempt Piano finish/high gloss
« on: September 11, 2017, 05:17 PM »
Hello Foggers,
I would like to attempt to get a high gloss/piano finish on a piece of MDF. Any suggestions on primer, paint and process. Spraying paint wont be an issue it's everything after that I need help with. I have search the web, but there are so many ways, that it's hard to figure out what is the best. This is why I thought I would sent it out to the FOG.

Thanks,
JC

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Offline bobfog

  • Posts: 835
Re: Would like to attempt Piano finish/high gloss
« Reply #1 on: September 11, 2017, 06:09 PM »
Few coats of polyurethane and polish the final coat with a wool mop and polishing compound.

Offline Sparktrician

  • Posts: 3357
Re: Would like to attempt Piano finish/high gloss
« Reply #2 on: September 11, 2017, 06:27 PM »
Hello Foggers,
I would like to attempt to get a high gloss/piano finish on a piece of MDF.
 

No disrespect intended, but isn't that pretty much the same as putting lipstick and a tutu on a pig?   [scared]
- Willy -

 "Remember, a chip on the shoulder is a sure sign of wood higher up." - Brigham Young

Offline bkharman

  • Posts: 1939
Re: Would like to attempt Piano finish/high gloss
« Reply #3 on: September 11, 2017, 07:23 PM »
When I was at Festool Connect last year they had a price of mdf coated festool green and it looked like plexi!  They of course were using their polishing system (which I have no experience with) but it was impressive. I think they also had the Shinex who buff it up through the high grits and compounds.

Good luck and take some pics.

Cheers. Bryan.


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People, I just want to say, you know, can we all get along? Can we get along?

Offline mrFinpgh

  • Posts: 235
Re: Would like to attempt Piano finish/high gloss
« Reply #4 on: September 11, 2017, 08:58 PM »
I watched a video some time ago where they prepped the MDF by skimming it with joint compound.   Beyond that, I'd guess you would just step through the grits and keep going for a long time.


Offline LooseSox

  • Posts: 91
Re: Would like to attempt Piano finish/high gloss
« Reply #5 on: September 11, 2017, 09:15 PM »
Any exposed edges will need some serious sealing as mdf is rather thirsty. I try to avoid exposed edges as much as possible on my speaker builds by mitering all joins.

As for the finish, don't mess around with standard wood finishes on mdf as you'll negate the savings on the product with the labour involved in the amount of coats you'll need. Go straight to an automotive 2pk finish.

Offline Steve1

  • Posts: 4
Re: Would like to attempt Piano finish/high gloss
« Reply #6 on: September 12, 2017, 09:00 AM »
I made an entertainment center of piano black over mdf.
But anything visible was Formica high pressure laminate rather than painted.  The proper code would be Formica #909-90 for polished black.    You can order it from Home Depot (will come in rolled up, so easy to transport home).     Only difficulty in getting it is that most HD employees will tell you "only the samples that are on the board can be ordered".   Might have go to a couple different stores or go back when a different associate is at the store (you get it from the kitchen department).   I used the laminate for edge-banding too, which results in a brown line the thickness of the laminate.  Not sure where to get gloss black proper edge-banding.  But careful application of a bit of Tremclad gloss black makes it almost invisible.    Make sure you arrange the laminate pieces so the trimmed edge is on a face that is normally not visible.
I did paint a few surfaces that are not really visible.   They say use oil based primer on mdf, but I used water based because that is what I already had.   I brushed several cotes of oil based gloss black on it, and tried polishing it out.   Never did look very good, but like I said it was not visible.   But I didn't have my ETS EC125/3 EQ back then.    There is a good video on You-Tube of guy showing how to polish with all the grades of paper and polishing compound available from Festool.

HD can order you a free sample of the laminate.  Just requires finding somebody who knows what the are doing.
« Last Edit: September 12, 2017, 09:04 AM by Steve1 »

Offline Holmz

  • Posts: 4010
Re: Would like to attempt Piano finish/high gloss
« Reply #7 on: September 12, 2017, 04:29 PM »
Mirka has a bunch of videos on this and sells all the compounds and papers up to 4000grit (or at least 2k)..

I thought Festool was using 3M ?

Both systems do the same thing.

Offline Pnw painter

  • Posts: 117
Re: Would like to attempt Piano finish/high gloss
« Reply #8 on: September 13, 2017, 02:03 AM »
I'd consider using Fine Paints of Europe Hollandac. I know of a local painter that uses it with outstanding results. I believe he wet sands with 600 or 1000 between coats. He also uses several air scrubbers when he's spraying to prevent overspray dust from settling on the finish. 


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Offline Cheese

  • Posts: 3733
Re: Would like to attempt Piano finish/high gloss
« Reply #9 on: September 13, 2017, 04:47 AM »

I thought Festool was using 3M ?



That connection has certainly been ominously quiet.

Offline JCLP

  • Posts: 743
Re: Would like to attempt Piano finish/high gloss
« Reply #10 on: September 13, 2017, 12:59 PM »
Here are two photos of my first attempt. There are some flaws, but that can be expected.The paint is BM Regal Select. I had a test panel with that paint on it. Thought I would try it. The second photo, you can see the clouds and blue sky. Kinda of cool.

Cheers,
JC

Offline Alan G

  • Posts: 18
Re: Would like to attempt Piano finish/high gloss
« Reply #11 on: September 13, 2017, 01:38 PM »
So what was your process?