Also do not bring solvent or resist contaminated items out from under the exhaust hood, unless it is in a sealed plastic bag. Manual Application of HMDS and Resist on the headway2 spinner Vacuum check the system without a chuck . Select the appropriate chuck. Make sure it is clean and has an o-ring on the inside. Choose the correct size chuck for your wafers.
Vacuum check the system with the selected chuck .
If it spins, choose a different chuck or clean the one you have selected with Acetone. Step on the front of the pedal to start the spin, and after the speed is set, step on the back of the pedal if you want to stop it before the time is up. Place the first real wafer on the chuck and apply HMDS . HMDS spreads easily for a uniform coat. Place the protective plastic piece between you and the spinner Step on the front of the pedal to start the spin .