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Milk Paint over Danish Oil

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Forum topic by JADobson posted 12-03-2017 04:59 AM 304 views 0 times favorited 9 replies Add to Favorites Watch
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JADobson

919 posts in 1946 days


12-03-2017 04:59 AM

Topic tags/keywords: milk paint finishing

Hi all – I tried adding a stripe of milk paint (1/16” wide) on a box. The box is finished with three coats of Watco Danish Oil (walnut). I pulled the masking tape off and almost all the paint came off with it. I had made test pieces where it worked fine. I think my paint was a bit thicker on the box then on the test piece, but not significantly. Any thoughts on what might have gone wrong? I also got a weird discoloured stripe where the paint came off. Thanks.

-- No craft is very far from the line beyond which is magic. -- Lord Dunsany


9 replies so far

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ArtMann

685 posts in 651 days


#1 posted 12-03-2017 08:31 PM

If the oil is the least bit wet or uncured, no water based paint or clear coat will stick. I would have some doubts about an oil finish ever supporting a water based paint.

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dubois

34 posts in 1666 days


#2 posted 12-03-2017 08:37 PM

The oil is permeable and it and the wood have taken on moisture from the paint leaving a dark stripe which will probably fade away soon, if not by the time you read this.

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JADobson

919 posts in 1946 days


#3 posted 12-04-2017 04:06 AM


If the oil is the least bit wet or uncured, no water based paint or clear coat will stick. I would have some doubts about an oil finish ever supporting a water based paint.

- ArtMann

Thanks Art. Do you think a coat of shellac would help?

Dubois, line is still there. Hopefully it won’t matter as I’ll paint over it if the shellac works. Thanks.

-- No craft is very far from the line beyond which is magic. -- Lord Dunsany

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bondogaposis

4477 posts in 2187 days


#4 posted 12-04-2017 05:44 AM

I’m not convinced that Watco Danish oil ever fully cures. In any event if it does, it takes a long time.

-- Bondo Gaposis

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Loren

9614 posts in 3483 days


#5 posted 12-04-2017 06:20 AM

Scrape off the paint, re-oil and let cure
for 30 days. Apply shellac. The paint may
stick but more shellac will need to go over
to keep it on.

I’ve seen paint stripes buried in film finishes
on guitars. Scuff sanding the layer the
paint goes on to 220 or so should help the
paint adhere better.

My idea is theoretical, but I would do it.

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JADobson

919 posts in 1946 days


#6 posted 12-04-2017 08:23 PM

Thanks Loren – I’ll give it a try and report back. Might not get to wait the full 30 days as I need this for Christmas though.

-- No craft is very far from the line beyond which is magic. -- Lord Dunsany

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bilyo

42 posts in 938 days


#7 posted 12-07-2017 04:40 PM

Have you tried using an oil based paint for the stripe?

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JADobson

919 posts in 1946 days


#8 posted 12-11-2017 09:27 PM



Have you tried using an oil based paint for the stripe?

- bilyo

That would be the easy solution but I already had the milk paint and have painted the bottom panel. I want to keep the same colour throughout the piece and don’t want to buy more paint. I’ll probably go without the stripe if the current plan doesn’t work.

-- No craft is very far from the line beyond which is magic. -- Lord Dunsany

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bilyo

42 posts in 938 days


#9 posted 12-13-2017 09:49 PM

I understand and I think Loren’s “theory” will likely work. If you haven’t started already, I wonder if adding some japan drier to the danish oil might help it to work better within your time frame. I’ve used it in BLO mixes successfully. Someone with more experience might answer.

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