On the other hand , according to Nagyszalanczy if you are using an oil - based finish , it is desirable to sand the wood using higher grit sandpaper ( 400 grit ) .
Oil tends to highlight sanding scratches .
On the other hand , according to Nagyszalanczy if you are using an oil - based finish , it is desirable to sand the wood using higher grit sandpaper ( 400 grit ) because oil tends to highlight sanding scratches .