Hvlp spray gun wood stain, homemade woodworking plans - PDF Review

Categories: Woodworking Shelf Plans | Author: admin 26.03.2012

Selecting and applying the right wood stain to your masterpiece is one of the most difficult (and necessary) steps of a project. Instead of trying to answer all these questions in one pass, let’s will focus on how to apply wood stain spray using a HVLP (high volume, low pressure) sprayer. Many woodworkers stay away from using a HVLP sprayer to stain wood because it seems too difficult to get a good finish. Remember that a consistent finish relies on consistent application; keep the gun a constant distance from your work piece and keep it moving at a steady speed. Start spraying before the gun is in front of the wood and don’t stop spraying until it’s past the work piece. I clean the guns after every use; in between coats I give them a quick cleaning by running either water or thinner (depending on type of finish i used) through the gun to prevent it from gumming up. Spraying louvers can be tricky – you will most likely get some material build up in the corners of the louvers, keep a lint free rag handy or a foam brush to pull it out.
Make sure your gun is working properly – run some water through the gun to check the function.
Whether you’re using oil-based or water-based stains, good ventilation is important for your safety and to provide a good finish.  Inadequate ventilation could result in your work space getting engulfed in a cloud of stain, thus hurting your ability to properly see and stain your wood. You most likely have some scrap wood laying around – use it to practice and to get your HVLP gun spraying how you want it to and ensure you’re getting a smooth, consistent finish that you’re satisfied with.


Changes in speed and the angle and distance of the gun to the work piece will change how the stain hits the wood – thereby changing how the stain looks. Between each wood stain spray, sand lightly with progressively finer grit sand paper; start with 320, then use progressively finer grit with each sanding.
After I am finished spraying I again run either water or thinner through the gun then tear the gun apart to give it a thorough cleaning. Just stay with light coats, it is easier to spray an extra cost or two than it is to sand out runs. The first thing to remember with spraying wood stains is to wear a respirator, regardless of whether you’re using oil or water-based stains. If the gun needs to be cleaned, clean it and then check it again by running some water through it. Open a door or window and set up fans to pull excess spray out of your work area and through the door or window. By starting and stopping the spray when it is not in contact with the work piece, we ensure that the gun is spraying at a consistent volume when it’s in contact with the work piece. Many wood stain sprays will say on the container how long the recommended drying time is for different application techniques.
With a little practice and some preparation you may find that applying a showroom-quality wood finish with a HVLP sprayer is far less hassle than you thought it would be.


That is the important number with HVLP; most guns run at 30 to 40 psi but require 9 to 12 CFM. It’s also important to wear a respirator; all stains contain solvents that can be harmful, and yes, even water-based finishes. If not, check to see if the wood stain is tacky to the touch or try sanding in an inconspicuous spot.  If the sand paper starts to clog up with uncured finish give it some more time. I think the most expensive compressor driven sprayer I have cost me $30 and the electric Wagner system I have was around $150. If your compressor puts out 8 CFM at 40 PSI, you can run a HVLP gun but you probably wouldn’t be able to run non stop, you would need to let the compressor catch up so that lack of air flow didnt effect the spray. By following a few basic preparatory steps, you can take the hassle out of staining wood with a HVLP sprayer. Just like any other application technique, the first coat of finish from your HVLP will raise the grain of the wood and require sanding (with a light grit like 320) before any additional coats are applied.
But…I have been using my cheap Home Depot sprayers for a couple years and they probably get used 10 to 20 times a month.



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