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Author Topic: Varnish?  (Read 3130 times)

tizdaz

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Varnish?
« on: December 10, 2017, 08:23:45 pm »

Hi guys,


Is this ok to use for my planking on the deck & wheelhouse, im not sure as it says interior use?


http://www.wilko.com/wood-stain+varnish/wilko-traditional-wood-dye-interior-jacobean-dark-oak-250ml/invt/0315908


Thanks
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Paragon

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Re: Varnish?
« Reply #1 on: December 10, 2017, 11:50:53 pm »

I think that is  a dye not a varnish so it won't repel water . I would think you would need to seal it afterwards with a waterproof varnish if you're going to have it near water .






John
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david48

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Re: Varnish?
« Reply #2 on: December 11, 2017, 12:11:56 am »


its a stain you will defiantly have to coat with a clear varnish .DO NOT SPILL ANY ON YOUR BUILD it will not come out
David
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tizdaz

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Re: Varnish?
« Reply #3 on: December 11, 2017, 02:02:31 am »

ah oki doke, i will look for a varnish :)


thanks!
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Baldrick

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Re: Varnish?
« Reply #4 on: December 11, 2017, 03:09:55 am »

 I find a better alternative is "Sanding Sealer" this is like varnish but is a shellac based very light varnish which seals the pores of the wood as it soaks in and gives a very much finer appearance than varnish . Almost looks like a wood polish as opposed to varnish which can be quite thick and heavy looking and too much for any fine detail on a model unless thinned.
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tigertiger

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Re: Varnish?
« Reply #5 on: December 11, 2017, 05:29:53 am »

Using stain is a cheaper alternative to sourcing hardwood timbers most of the time. I have used aniline stains successfully, but found they faded over time. If you can find raw stains, you can mix them for custom colors.
Some caution is needed. There are different kinds of stain and they behave a little differently, please read the labels, but generally:

Stain before: gluing up. Make sure the stain has gone off completely before going on to do anything else with the wood, otherwise there is a small risk that the stain will be affected by the glue and Vs Vs.
Stain before sealing. Once you seal the stain cannot go into the wood as well.
Stain takes diffently to different types of grain. If you have even grain the coloration should be even. Irregular grain gives blotchy finishes. You can buy special primers to put on before stain to even this out, but that is more cost. You can use thinned seals and varnishes before staining to reduce blotching, but this reduces the amount of coloration that the wood takes in overall. Generally re-staining does not make it darker after the second coat.


The other option is to buy colored exterior varnish like Ronseal. You may be able to find some manufacturers can supply small tester tins, these are probably big enough for modeler's  needs.

Just some thoughts
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grendel

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Re: Varnish?
« Reply #6 on: December 11, 2017, 12:46:10 pm »

I have just varnished the transom of my model, the owner of the real boat sent me the varnish (from italy) a pot of genuine turpentine, and the 6 step instructions.
These start from step 1 25% varnish to 75% turps, step 2 50/50, steps 3 and 4 75% varnish to 25% turps, step 5 80% varnish to 20% turps, and step 6 100% varnish, I repeated step 6 twice to get the finish I wanted.
after each coat the surface is prepared by wire wool or fine sandpaper, then wiped off with a rag with turps.
the picture is about half way through the process
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grendel

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Re: Varnish?
« Reply #7 on: December 11, 2017, 12:51:51 pm »

heres the almost complete varnish (1 extra layer added since)
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Colin Bishop

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Re: Varnish?
« Reply #8 on: December 11, 2017, 01:22:53 pm »

Best to avoid quick dry acrylic varnish although you may get away with it above the waterline. Not a patch on the proper stuff.

Colin
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