I wanted to re-coat my chair with some fresh tung oil and couldn’t be bothered to clean a real brush so I hacked together this field-expedient “brush” from an old t-shirt, a wood scrap and a few staples:
Step 1: cut a strip of cloth
Step 2: fold strip in half
Step 3: staple one corner of the folded strip to a stick, with ~2cm sticking out the end
Step 4: roll fabric loosely around the stick a few times
Step 5: secure rolled up fabric with more staples all around
Step 6 (optional): hit the loose end of the brush on a belt grinder to get a little more fuzz
BOOM!