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base finishing

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Philip Burley04/08/2020 12:39:34
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194 forum posts
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I am just sanding down a couple of pieces of mahogany for bases for model engines . What to others use for finishing them . making them fuel and oil proof while retaining a gloss finish , one is for a steam engine and one for IC engine

regards Phik

Bo'sun04/08/2020 12:54:39
178 forum posts

Oil resistance isn't too much of an issue, however, fuel (presumably petrol) is. I used a two part laquer years ago made by "Rustins". Not sure whether it's still available, but I'm sure there will be something similar out there.

JasonB04/08/2020 13:10:18
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I tend to oil mine with Osmo PolyX being the usual choice.

Rustin's "Plastic Coating" sounds like what B0'son describes but a bit too glossy for my liking but is more durable than the oil.

Barrie Lever04/08/2020 13:32:28
688 forum posts
76 photos

Phil as Jason and Bosun have said the Rustins Plastic Coating is very durable and chemically resistant.

Another nice thing about Plastic Coating is that it sands down nicely between coats, ultimately it does end up very shiny, how ever there are a number of ways to hold the gloss back, first to try is a fine sand paper finish say something like 800 grit and then to wax the surface, I really like this finish and it is how I finished my Moore and Wright tool box.

Secondly add a flatting/matting agent, this can be something as simple as talcum powder, that was the way we used modify Humbrol enamels when we were kids.

B.

Emgee04/08/2020 14:03:59
1652 forum posts
224 photos

Phil

After the Rustins coating has completely hardened you can flat off lightly with 1000 grade wet and dry used wet, add a bit of soap liquid to save the paper clogging.
This will quickly leave a matt finish that still has the full protection provided by the product.

Emgee

Philip Burley04/08/2020 15:15:40
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194 forum posts
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thanks , I will see if the local DIY has any of that

regards Phil

Barrie Lever04/08/2020 15:22:34
688 forum posts
76 photos

Ebay

steamdave05/08/2020 12:07:59
455 forum posts
35 photos

A bit late in the day, but I use a home brew furniture polish that resists oil and fuel quite well. It gives a matt sheen when buffed up.

1 part pure turpentine
1 part raw linseed oil
1 part white vinegar
1/4 part methylated spirits

Shake well and apply with a soft cloth to the bare wood. Several coats can be applied in fairly quick succession. I usually aim for a minimum of 4 coats. Keep it sealed in a small honey jar or similar and it will last for ages. Just shake again before using each time.

Dave
The Emerald Isle

Philip Burley05/08/2020 16:25:59
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194 forum posts
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That sounds like a bit of a witch's brew , I have ordered some Rustins , sounds as if it might be good for my kitchen work tops as well

Regards Phil

Tim Stevens05/08/2020 16:52:59
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1259 forum posts

Try the finest grade of steel wool when reducing the shine, lubricated with furniture polish. It is better able to fit into mouldings etc than wet & dry. And rub in circles wherever you can, rather than to & fro. I use grade 0000 - available off the shelf in the village.

Cheers, Tim

old mart07/08/2020 16:31:37
1913 forum posts
151 photos

Polyurethane varnish seems to be pretty good for resisting fuels and is tougher than most varnishes.

Barrie Lever07/08/2020 17:08:34
688 forum posts
76 photos
Posted by old mart on 07/08/2020 16:31:37:

Polyurethane varnish seems to be pretty good for resisting fuels and is tougher than most varnishes.

Mart

Trouble is it takes an age to dry.

B.

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