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Pallmann Magic Oil 2k finish issue

6/19/22       
Arun Member

We decided to go with Pallmann Magic Oil on white oak. Did a mixed application (9 neutral to 1 white). But it got into a got into a problem, looking for some advice if there a way to recover from it.

We did buffer application with red pad, then after dwell time removed with red pad, followed by white pad twice over. First coat was with 1 liter on 450 sq.ft. Then went for a back to back second coat (same steps), this time using 0.5 liter. After 12/24 hrs had a very good finish with smooth matte finish.

The issue arose on the application of the third coat; after 24 hrs, we applied the third coat, following the same steps as above. We used 0.5 liter on this application. After the 24 hrs curing period, there is a semi-gloss sheen which looks like a polyurethane finish (so seems like more gloss than there should be). We liked the previous matte finish which we lost after the third coat.

What's the best way to recover from this point?

Have attached picture of the projects.


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6/20/22       #2: Pallmann Magic Oil 2k finish issue ...
DannyB Member

A few things:

Two coats is the recommended max according to the manufacturer. Once it isn't penetrating the wood, it's going to sit on top, and that will definitely change the sheen to be more glossy because the oil will be visible. It is also not going to survive that well as a finish in that state.
The matte comes from removal of most of the oil.
They don't list any flattening agents in their MSDS/etc. So if you want three coats this way, you'd probably have to add your own flattening agents.

I would stick with two coats (and 1 on super-dense woods), as the manufacturer suggests.

Anything else is asking for trouble (in bonding, curing, etc).

For all the magic words they use (hardwax oil, etc), this stuff is a basic isocyanate hardened finish. The instructions on the isocyanate hardener (component b) say it can't be reused once opened. You didn't say whether you did, and i've seen it cause this before due to the oil not hardening properly (and leaving a sheen as a result). In practice, if you were religious about having it open for the absolute minimal amount of time (or you used bloxygen), you may get it to last a week or two.

To recover, you need to test the finish and understand what state it is in first. If it was properly catalyzed, it should be stain/scratch resistant by now. Your fingernail should not scrape it, etc.

You are still asking for trouble with three coats, but assuming it is in a reasonable state, you could just buff it back to matte with appropriate pads.

Do not put another coat down hoping it will turn out matte - all you will do is raise the chance of future floor failure even further.

6/20/22       #3: Pallmann Magic Oil 2k finish issue ...
Arun Member

Danny,

Thanks for the response and the details.

We opened a fresh hardener bottle for every coat, 3rd coat included. The floor holds up for scratch resistance when tested in a few places and it doesn't feel tacky. So I do believe it's fully catalyzed. What went wrong is probably as you said that we should not have done a third coat at all, or we should have used very tiny amount of the oil.

What pads would you recommend to buff it back to matte and using what machine?

Thanks,
-arun

6/20/22       #4: Pallmann Magic Oil 2k finish issue ...
DannyB

Honestly, i'd bug Pallmann.

I've done it on some coffee tables over-finished with pallman before, and just used an orbital and some festool vlies of different grits till it looked right.

But i've never tried to do it on an entire floor with their buffing pads.

6/21/22       #5: Pallmann Magic Oil 2k finish issue ...
Arun Member

Thanks David.

Pallmann technician recommendation is to use their Clean N Prep product followed by Magic Oil Care. If that doesn't work, to try maroon pad and follow it Clean and N Prep or Magic Oil Care. Any of it after trying it in an inconspicuous area first.


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