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Subject: Re: buff and polishing conversion varnish

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Message Thread:

buff and polishing conversion varnish

6/6/19       
Patrick

I am looking for a general guide line on how to buff and polish conversion varnish to a flawless high gloss finish.
I have done this in the past, but it has been quite some time and would welcome any tips or advice.
Thanks.

6/6/19       #2: buff and polishing conversion varni ...
Shane

It's not an easy task..... I just doesn't get hard enough soon enough to take a good buffing..... Honestly your better off going the 2K route... it's cures harder and faster and will take a good buffing better than CV.
that being said if you want to try some practice panels..... Build your finish coats as you normally would... with good level sanding between each coat... being clear or pigmented..... I would make sure your last coat is retarded well to flow out as well as shoot the maximum wet millage you can that will lay out properly and still give you maximum dry mills for that last coat..... let cure as long as you can production wise..... wet sand flat starting with 1200 grit wet/dry, 2000 wet dry then wet sand 2000 & 3000 with a product like abralon a foam backed type abrasive.
Wool pad and cutting compound... then start the foam pads and polishing compound sequences with 3m finnese it set..... Should get you pretty shiny... careful on getting cv hot.. it burns quick..
Samples samples samples.... I'd do minum a 4'x4' panels to test

6/6/19       #3: buff and polishing conversion varni ...
the google

shane - how long do you usually wait before you start buffing? i'm just curious here.

i've only done this once on 2k poly and waited 5-6 days before i started to rub out. lots of work and not something i really want to do again.

6/6/19       #4: buff and polishing conversion varni ...
Leo G Member

I've done mine a bit different, but not to much.

I go over the mil thickness by 1 coat, I plan on sanding it off. Try to do wet on tack coats so it burns in otherwise you might cut through a layer and get a halo.

I start off with a 600-800 grit Abranet and dry sand until you can see it's flat, no shiny areas or spots. Then you blow it off and wipe it down with denatured alcohol.

Then wet sand with Abralon going through the grits. After each grit wipe it off well with a tack free cloth to remove any grit.

Then with some automobile buffing compound and a wool pad and buff it out with a fine or extra fine compound.


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6/7/19       #5: buff and polishing conversion varni ...
Adam

CV is a poor choice for a buffing project. You want a thick hard finish. 2k polyurethane or a polyester piano type finish are the usual suspects.

The mil thickness requirements of cv are limiting.

12/6/19       #6: buff and polishing conversion varni ...
Joe Seremeth  Member

Website: http://woodlab.me

Hi All -

Can any one tell me : How many coats do you like to build up for one of these finishes? 5? 7? 10? different for CV and 2k?

Thanks

12/6/19       #7: buff and polishing conversion varni ...
Leo G Member

Go one coat over the maximum mil rating so when you grind it down and then polish it'll be as thick as it can and still be within the mil limit.

 

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