ELECTRIC CUP GUNS OR
POWER PAINT SPRAYERS
HAND HELD POWER SPRAYERS
Below are instructions for operating a hand held electric cup gun or as they are better known by "power paint sprayer".
Be sure to follow all of your local government safety instructions regarding spraying products and equipment.
If your looking for a different type of paint sprayer, or other information related to spraying, then use this
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to help you find what your looking for.
WHAT'S GOOD ABOUT THEM
When trying to consider what's good about electric cup gun power paint sprayers, the first thing that comes to mind is cost. Most systems of this type are reasonably priced. Due to the lower investment, the electric cup gun is also a good system to learn on.
WHAT'S BAD ABOUT THEM
For $50.00 to $100.00, or even less if you buy a used one, power paint sprayers work fine for small jobs and will give you a good idea if you would like to purchase a more expensive system. Do keep in mind though electric cup gun sprayers can be slow, very noisy, and don't always leave the best finish.
WHAT WILL THEY SPRAY
Most power paint sprayers are limited to the kinds of product they can spray. Substantial thinning is usually needed unless your using a solvent based product like alkyd. Most latex based paints should not be diluted by more than 10% other types of product can be thinned by as much as 25% or more. Be sure to follow paint manufacturer instructions for thinning the material you are going to spray.
SETTING UP POWER PAINT SPRAYERS
Cover all areas that you do not want coated in paint. Another alternative is to take the project your spraying outside. Set it on a drop cloth. If you do this check the wind. Whatever direction it is blowing no mater how slight it may be can cause grief. Any objects in the winds path, cars, house, fence will be over sprayed. Always use caution when spraying. Also before applying any paint to the object your spraying use a test sheet of cardboard or wood to practice on. Fill your electric cup gun with the thinned product you are going to use.
SPRAYING WITH POWER PAINT SPRAYERS
With your test sheet or board set up and gun filled with material start spraying. Be sure your machine, if it can be is set for horizontal spraying. Pull the guns trigger just before the edge of the board begins. Make sure your gun stays in a strait line and the same distance away from the object that your coating ("4 to 8" depending on your type of electric power sprayer). Drop down by half of the first coat pull the trigger and overlap with product by about 50%. Keep going until the board is done. Once everything is dry sand (100 grit or so) then recoat. Three coats are usually best.
PROBLEMS WITH POWER PAINT SPRAYERS
Most problems when spraying are due to using improper techniques, products or thinners, and having incorrectly thinned materials (runs, sags, bumpy surface etc.) Figuring out the best product viscosity and how to spray (by trial and error)is very important. Also, un sanded or dirty projects and plugged power paint sprayers can cause a hole load of problems.
Once you have practiced a few times with some disposable boards go ahead and do your intended project. Just keep in
mind, repetition and good quality clean products and project surfaces when using power paint sprayers will be the only way to get an excellent finished job.
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