Morning All, DIY ask here. I’ve cocked up by not wiping up enough Ronseal smooth finish filler excess away. I’ve a light sanding block but it doesn’t seem to make a dent. Any ideas? This is being painted but I feel it’ll be obvious as it’s probably 0.1mm thick. Thanks.
Rather than a sanding block, try some course sanding paper (80 grit or similar). You'll be able to press harder and remove more material. Dan.