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Help with cutting board finish

by becikeja
posted 11-29-2018 12:34 PM


8 replies so far

View Lazyman's profile

Lazyman

3433 posts in 1782 days


#1 posted 11-29-2018 12:46 PM

Pictures or more information would help. Were the spots of wet oil or spots where the oil was repelled, for example?

Does washing the board make any difference?

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View becikeja's profile

becikeja

992 posts in 3208 days


#2 posted 12-03-2018 11:09 AM

Here is a pic. Looks like she used this stuff from Ikea, appears to be just mineral oil. Doesn’t seem to explain the spots to me anyway. Any idea what would cause these spots.

-- Don't outsmart your common sense

View Lazyman's profile

Lazyman

3433 posts in 1782 days


#3 posted 12-03-2018 05:43 PM

Couple of thoughts…
  • Could those spots have still been wet when the MO was reapplied? Wet spots will likely repeal the MO.
  • Almost looks like there is a finish other than MO that repealed the MO. Perhaps the wax you applied? Try stripping the wax off and reapplying the MO. You might have to re-sand.
  • You might consider using a butcher block finish instead of MO followed by wax.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View becikeja's profile

becikeja

992 posts in 3208 days


#4 posted 12-04-2018 01:35 AM

The water spots was my guess. Almost like she washed it and then applied the mineral oil before it was dried, I just don’t know. I’m not to concerned with applying the MO on top of the existing finish. I’ve applied a wax/MO mixture on others with no bad effects.

It has to be water, I just cant think of why else this would happen.

Appreciate the response

-- Don't outsmart your common sense

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becikeja

992 posts in 3208 days


#5 posted 12-05-2018 11:06 AM

Update, I’m back to square one. The claim is that it was dry before the new MO was added.
Still wondering what happened here, if you have any other ideas.

Next step is to sand off the finish and reapply. But I still need to know what happened so I can understand what caused this,. My OCD is kicking in and this is driving me crazy.

-- Don't outsmart your common sense

View Lazyman's profile

Lazyman

3433 posts in 1782 days


#6 posted 12-05-2018 12:54 PM

Then my guess is that the wax is part of the problem. The spots may be where the wax has come off allowing the MO to soak in but the other areas where the wax is still thick enough repealed the MO.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View LesB's profile

LesB

2095 posts in 3838 days


#7 posted 12-05-2018 06:05 PM

I would guess that because it appears the spots are in the central cutting area of the board that some other contaminant had gotten into the wood. You could try washing the board in a detergent (dishwasher detergent) or appropriate solvent and retreating to see if that removes the spots.

I’m not a fan of mineral oil on cutting boards because it never “dries”. I have had much better luck with other oils that “cure”, like processed Walnut oil which soaks in and cures hard. It too can be replenished as needed and on appropriate surfaces can even be built up into a surface coating. Tung oil is another that “cures” hard. Note I use the word cure because these finished do not dry the chemically cure and in most cases help harden the surface of the wood.

-- Les B, Oregon

View Aj2's profile

Aj2

2280 posts in 2193 days


#8 posted 12-05-2018 06:17 PM

Are you taking about the dark areas I’m the middle of the maple? Because I’ve seen maple have that look after being glued. The water from the glue is being absorbed by the wood. The dark areas in the middle of your work looks like walnut dust dropped in the pores and got trapped.
Or maybe even the moisture from the glue was trapped when closed out the cells with mineral oil.
There’s my guess from a thousand miles away :)

-- Aj

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