For this machine, always keep chamber vacuum. working pressure should be lower than 10 to -5 Torr

		To load sample
1. Press seal, then press vent. Open the gas valve while venting.
2. After the pressure reaches atmosphere pressure, open lid and load the sample. 
3. When loading the sample, remember to plug in the rotator power cable, check:
	rotator
	crucible
	sensor
4. Close lid, pump chamber for at least 1 hour (press seal pump). Use liquid nitrogen to speed up if needed

		To deposit metal
1. Turn on rotator, turn on power
2. Switch crucible to target metal if needed. If the metal is switched, remember to check the metal parameters. See attached paper on the device, remember to switch "layer"
3. Turn on electron beam gun
4. Slowly twist the knob to increase beam gun power to desired level. (No more than 1/4 of the full range at most.)
5. Wait a short while for the growth speed to stabilize, then open the shutter (left bottom of the 3 in a line)
6. Take your time while depositing
7. When desired layer thickness reached, close shutter, turn off electron beam gun
8. If a swich in the metal is needed, switch "layer", check parameter, and rotate the crucible clockwise.

		Hint:
1. Sometimes it's hard to determine whether the desired metal is under the electron beam. You can turn on the electron beam power to a low level, then watch which metal is irradiated.
2. The appearance of metals:
	Gold:	does not stick with crucible, requires less power to vaporize (5)
	Nickel:	sticks with crucible, hard to vaporize, deposit at very low speed (1~2)