Describe how to perform an airless plastic weld.
What will be an ideal response?
First clean the back of the plastic part or an area that will not be seen. Prepare the airless welder by cleaning the melt tube with a 1?8” (3 mm) drill, and also clean the welding shoe by sanding all the previous welding debris with P220 grit sandpaper. Then weld a rod to the plastic, let it cool, and then pull it off. Do this with a number of rods to find the one that holds the best. This weld rod test can and should be performed for choosing the proper rod for hot air welding as well, though it is not the most common method of plastic welding.
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Starter sizes are rated by motor type, horsepower, and connected ____________________.
Fill in the blank(s) with the appropriate word(s).
If you feed out ten feet of wire electrode and cut it off, and then lay it on the floor where it forms a circle, the diameter of the circle is known as the ____________________ of the wire.
Fill in the blank(s) with the appropriate word(s).
Why is the drain for condensate water normally trapped?
A) To funnel water to the auxiliary drain B) To stop water from standing in the drain pan C) To reduce humidity D) To trigger the condensate sump pump
When installing baseboard molding around the perimeter of a room, outside-corner joints should be _____
a. butt joints b. coped joints c. mitered joints d. scarf joints