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Oily wood

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Oily wood

Postby 9fingers » 11 Jan 2018, 10:58

I've just had a stark reminder about the effect of oily wood on finishes.

I laminated some offcuts to make a gift for a friend using brown oak, ash and some interleaved accent strips of iroko.

All went well until the finish of diluted PU varnish was taking ages to go from the dry but slightly tacky stage to hard enough to de-nib and re-coat. I thought initially that the workshop was too cold and so I brought it into the house but still taking ages. After a couple of days if I gently rub my finger across the different woods, it is the iroko that is still slightly tacky.

Moral of the story is that I should have wiped the sanded surfaces over with acetone but completely forgot.

On the grounds of "no photo so it did not happen" this is what I'm making (a mess of!).

bathboard 001.jpg
(505.54 KiB)


It is a board to fit across a bath and hold tea lights, a mug or a wineglass

Hopefully the recipient will never know the problems but delivery will be a little later than expected as I'll have to bake it on a radiator for a good few days to get it good and dry before a final waxing.

Bob
Information on induction motors here
https://drive.google.com/file/d/1dBTVXx ... sp=sharing
Email:motors@minchin.org.uk
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Re: Oily wood

Postby Phil » 11 Jan 2018, 15:07

I have a similar issue with outside of the back door at Son & DIL house.

Sanded, scraped, sanded.
Then some PU.
Next day still wet not even tacky.
Wiped it off with first of all turps. No difference. Then thinners, not much better.

I like your acetone idea, as I need to go back and finish the job sometime.

Thats going to look very smart.
We don't stop woodworking because we grow old, we grow old because we stop woodworking!

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Re: Oily wood

Postby Andyp » 11 Jan 2018, 17:22

Very nice Bob. I am sure it will be well received although why anyone would want to drink wine, or tea, while in the bath is beyond me.
I do not think therefore I do not am.

cheers
Andy
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Re: Oily wood

Postby 9fingers » 11 Jan 2018, 17:26

Andyp wrote:Very nice Bob. I am sure it will be well received although why anyone would want to drink wine, or tea, while in the bath is beyond me.


Or indeed burn candles? :lol:

There are some things we chaps just don't understand and possibly never will!

Bob
Information on induction motors here
https://drive.google.com/file/d/1dBTVXx ... sp=sharing
Email:motors@minchin.org.uk
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Re: Oily wood

Postby Halo Jones » 11 Jan 2018, 17:53

I have to say that I don't understand it either but I do know LOML would love it and the idea is getting pinched as a valentines/anniversary present!
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