input question: How to cut a wooden gear?

output answer: Using the CNC we cut 7mm thick MDF Wood to create the board 128cm X 97cm with holes for gear shafts. Use a 15mm drill bit to cut the gears.

input question: To find an air leak on a car's tire,

output answer: rub the outside of the tire in soap and water, and look for where bubbles start to produce.

input question: clean jewelry at home

output answer:
To remove built-up tarnish from your silver, make a thick paste with 1/4 cup baking soda and 2 tablespoons water. Apply with a damp sponge and gently rub, rinse, and buff dry. To polish gold jewelry, cover with a light coating of baking soda, pour a bit of vinegar over it, and rinse clean.