I've recently sanded (hire a flood sander) and varnished my timber floors in my house. Until I came to varnish I didn't realise that there were small lines in the wood which seem to be where the sander has not sanded evenly. They look like brush marks but aren't.
Anyway, in not sure what to do now to fix this.
Should I try sander back I've these with a handheld sander and see if that works and then re-varnish?
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