How to clean/prep window boards for varnishing

markjg123 · 13 Mar 2019

I'm looking for advice on how to remove various marks/stains from these window boards so that I can varnish them.

The marks/stains are a combination of grease(?), emulsion and ingrained plaster dust.

No amount of sanding with 180 grit paper is having much positive effect.

KenGMac · 13 Mar 2019

markjg123, good evening.

Looks as if you have tried really hard so far.

Can i suggest you look at a Joiners Scraper? Google this tool and have a look on YouTube ?

Ken.

markjg123 · 13 Mar 2019

Thanks Ken.

I've not seen these before but they look ideal. I'm going to order one and give it a go. It looks relatively straightforward to use one.

opps · 15 Mar 2019

If you are going to be using oil based varnish, wipe the area with white spirit. Whilst wet, it will give you an indication of what it will look like when varnished.

I wouldn't imagine that the grease marks will be an issue. The emulsion- I'd recommend dropping down to 80 grit and then using your 180 grit.

180 is more of a "finishing" grade paper rather than a "stock removal" paper.

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How to clean/prep window boards for varnishing

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