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Thread: HVLP Sprayer

  1. #1
    Join Date
    Aug 2016
    Location
    Alabama
    Posts
    18

    Lightbulb HVLP Sprayer

    Soo I went out and bought me a fancy HVLP sprayer from HF 44677. Thought I could get started with its and down the line upgrade if needed.

    Its probably a stupid question but..... It tells me to clean out the gun after spraying. But if I have a poly going down and its a 2 hr dry b4 sanding and adding another coat am I to clean the gun out each time? I like 3 coats of poly sometimes....

    Can the poly Or stain sit in the gun till the job is finished without damage?

    Of those who have one, how long have you let the poly/stain sit during a job.??
    If you like your freedom, THANK a vet !

  2. #2
    Join Date
    May 2012
    Location
    Gatineau, Québec
    Posts
    97
    Mike:

    when I use my spraying equipment I empty the cup into a temporary storage container after the coat I am applying is complete. I then pour some solvent (either water, alcohol or « varsol » - based on product used) into the cup and « flush the gun for a few seconds. Wipe out the cup and wait until the next coat is ready to be applied.

    I thourougly clean the gun at the end of the day.

    I have learned the hard way that leaving products in the cup will lead to replacement of parts - sometimes expensive ones!

    Enjoy your new tool,

    J

  3. #3
    Join Date
    Aug 2016
    Location
    Alabama
    Posts
    18
    Makes sense.

    Thanks for the input. Its a 100.00 sprayer but still like to not destroy it hahahah
    If you like your freedom, THANK a vet !

  4. #4
    Join Date
    Dec 2010
    Location
    WNY
    Posts
    5,606
    I leave non-catalyzed finishes in the gun/cup between coats. I clean the air cap and wipe the nozzle tip clean. I only clean the gun/cup at the end of the day. Never had a problem, including with the purple HF gun which is not even rated for WB products and that's all I spray.

    John

  5. #5
    Join Date
    May 2012
    Location
    Gatineau, Québec
    Posts
    97
    John,

    I like your approach; easier than what I have been doing. Thanks for sharing.

    J

  6. #6
    Join Date
    Dec 2017
    Location
    Willard,Utah
    Posts
    127
    I leave mine in the cup for a day or two until I have a couple coats on each side. But don't leave it in much longer than that

  7. #7
    Join Date
    Nov 2013
    Location
    Crozet, VA
    Posts
    172
    I definitely leave it in the gun until the end of the end of the day cleaning. Sometimes the finish hardens over the nozzle between coats and I just scrap that off with a utility knife. I should also say I spray mostly waterborne, never sprayed oil-based poly.

  8. #8
    I'll leave my guns loaded for the length of the job whether that be an hour or a week. I do thoroughly clean the top and air nozzle after every spraying session and regularly during longer sessions. Of course, the rules change for two part finishes.

  9. #9
    Join Date
    Mar 2003
    Location
    SE PA - Central Bucks County
    Posts
    47,774
    Many folks will keep a gun charged for multiple coats during the day. I only clean once a day unless I change to a different finishing product. It's a little harder to do with slow drying finishes like oil based varnishes, however, since you can only get a low number of coats in during a single day. If that's what you mean by "poly", keep in mind that spraying oil based finishes can be a "thankless" task because of the large amount of very sticky overspray that results. These finishes are best hand-applied, IMHO. Spraying is ideal for fast drying finishes like water borne products and shellac. (as well as solvent based lacquer, but that shouldn't really be used unless one has a proper spray environment.
    --

    The most expensive tool is the one you buy "cheaply" and often...

  10. #10
    Join Date
    Aug 2016
    Location
    Alabama
    Posts
    18
    My poly is water based. Project will hang on wall and not have a lot of handling so to speak. Ill do the coats today then wash out the cup and do it again tomorrow. Only so many coats in a day lol

    Thanks for all he input. Much Appreciated!!!!
    If you like your freedom, THANK a vet !

  11. #11
    ca you please post a review of this sprayer? I am looking for a cost effective sprayer and this seems to be the best bang for the buck. thanks

  12. #12
    Join Date
    Jan 2009
    Location
    Lawrence, KS
    Posts
    465
    Quote Originally Posted by Jon Steelman View Post
    ca you please post a review of this sprayer? I am looking for a cost effective sprayer and this seems to be the best bang for the buck. thanks
    It works "OK". A single stage HVLP turbine so not a lot of umph behind it. If you spray thin coatings like shellac, dyes (although its needle/nozzle choices are a bit large for dyes) or thin the average water-borne product to its maximum allowable level, it will work fine.

    With respect to the cleaning between 2-4 hour uses, it really isn't necessary except to use a rag with the appropriate solvent and clean the nozzle and air cap thoroughly. And if you want to speed up cleaning of the cup, think about using the cup liners (HF does sell some and for the most part, they work fine).

    A similar rig was sold through Rockler and a few other places (Canadian Tire I think).

    It is loud compared to my 4-stage HVLP and I have MUCH more flexibility in the more heavy-duty unit. But for $100, I don't think you can go wrong if you learn to live within its limitations on the viscosity of fluids it can spray. It does come with something similar to a Ford #4 cup so learn to use that an calibrate your results.
    Don't sweat the petty things and don't pet the sweaty things.

  13. #13
    Join Date
    Aug 2016
    Location
    Alabama
    Posts
    18
    I left the poly in all day until I finished up my 3 coats. This is my first sprayer so I do not know a lot about them other than what I have read. But.. I like this unit. get a 20% off and its 95.00 out the door.
    Everything was in the kit with no missing parts. Pull it out, pour in your media plug it up and pull the trigger.

    Easy to clean. I would buy again.
    If you like your freedom, THANK a vet !

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