A fastener in sheet metal should not be any closer than four to six diameters from the next one. For example, if you are using a 1/8-in. Pop Rivet, the nearest another rivet should be is between 1/2 to 3/4 in. By using this rule, you will reduce the chances of damaging a part, as well as make optimum use of your fasteners.
To avoid rasing the temperature of a freezer, freeze no more than one-tenth of the appliance’s capacity of food at one time. Also, be sure to cool foods brefore storing in the freezer. To cool hot food quickly, sit the base of the container in a sink half-filled with cold water.