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- Feb 24, 2014
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fish eyes are the biggest indication of moistuture or oil in the lines.
but fisheyes can also be caused by surface contamination.
but fisheyes can also be caused by surface contamination.
fish eyes are the biggest indication of moistuture or oil in the lines.
but fisheyes can also be caused by surface contamination.
Simply put what it causes for me is a bunch of unnecessary sanding and re-coats. BTW Nathan I saw your newest paint job, very nice work! What model HVLP gun are you using?I am guessing it would cause bubbles in the finish.
Simply put what it causes for me is a bunch of unnecessary sanding and re-coats. BTW Nathan I saw your newest paint job, very nice work! What model HVLP gun are you using?
I would also like to buy a separate one to use for primer.
Is a good airbrush a good thing to buy? My friend paints all his rockets with an airbrush and they look awesome.
Silicone based oils and lubricants are one of the best known for causing fisheyes alongside the moisture issue.
Thanks, my HVLP gun is an inexpensive TPC Global brand spray gun that I bought several years ago. It seems to do a good job but it is the only paint gun that I have used so I don't have anything to compare it to. Now that I have been painting with a gun for several years I would be willing to buy a better one if I thought it would make any difference. I would also like to buy a separate one to use for primer.
Thanks, my HVLP gun is an inexpensive TPC Global brand spray gun that I bought several years ago. It seems to do a good job but it is the only paint gun that I have used so I don't have anything to compare it to. Now that I have been painting with a gun for several years I would be willing to buy a better one if I thought it would make any difference. I would also like to buy a separate one to use for primer.
Let the pressure off of the tank, drain any water, store it clean and dry.
I think that most of the stuff that youll read on HVLP guns is pretty much baseline for spraying large volumes of paint at one time across large areas like auto body applications. For rocketry, even large rockets, Ive found that you can do pretty good with far less than a full car paint booth. As long as your compressor/tank can maintain pressure and volume at the spray cap during your spray run, youre golden.
I used this compressor, which everyone said was too small :
https://www.sears.com/craftsman-3-g...p-00915362000P?prdNo=6&blockNo=6&blockType=G6
With this spray gun, which everyone said was total crap and not worth using as a boat anchor : https://www.harborfreight.com/air-tools/paint/20-oz-8-cfm-gravity-feed-spray-gun-67181.html
With these accessories, which everyone said was good money after bad :
https://www.harborfreight.com/air-tools/air-hoses/38-in-x-25-ft-pvc-air-hose-61977.html
https://www.harborfreight.com/Disposable-Inline-Moisture-Filter-68224.html
https://www.harborfreight.com/Inline-Desiccant-DryerFilter-68215.html
With this paint, which everyone said was too expensive and the wrong stuff to use on a cardboard/plywood rocket :
https://duplicolor.com/product/paint-shop-automotive-lacquer-finish-system
And I sprayed the parts in this :
https://www.walmart.com/ip/Honey-Can-Do-36-Wardrobe/17108665
And even after screwing up setting up the gun several times, once I figured it out ( https://www.how-to-build-hotrods.com/set-up-hvlp.html ), I sprayed for several hours (2 coats of primer, both sanded, 2 coats of color, 2 coats of sparkle, and 3 coats of clear) without any problems at all or the compressor running like a scalded dog.
I got one of the best paint jobs that Ive ever done, and certainly one of the top in my local area (but still well short of Nathans legendary paint!). The clubs that I launch with like what I do with rattle bombs and some prep work, and theyve absolutely pooped their pants on my DX3 paint job.
Since going HVLP, I use less paint, get better coverage, get better surfaces, get all the colors Ive ever wanted, and there is almost NO overspray whatsoever. Its an investment initially, but Ive found it to enhance greatly my MP/HP rocket finishes.
Bottom line is, test YOUR set up. If it does what YOU want it to do, go for it (and to heck with the haters that say you have to have a jumbo tank and a professional quality gun).
Nice work Michael. It also kind of reminds me of a bootleg distillery????
lookin good!
Thanks for that link...BTW what tip size/s are you using on your HVLP gun/s?
My HVLP came with a 1.5, which I find okay for prime and base but a bit big for my top coat, at least gloss. I have been looking around and it seems like 1.8-2.2 is recommended for prime, base 1.4 and top 1.2-1.3.
These numbers seem about right from my very limited experience, and so I would like to get a dedicated HVLP for prime. Because 1.5 is doable for me I would probably go with the low end @ 1.8, which I know can be picked up inexpensively. I would also like to grab a dedicated topcoat gun, maybe a 1.3, but I know this gun would be a bit more money. Then I would just use my current gun for base which although I may get better results with a 1.4, I am okay with 1.5. Ideally I would just get a matched cap, tip and needle @ 1.4 for this gun however I cannot find options for the Porter Cable HVLP I have.
Also have you used the matte clear, if so do you find it needs a bigger tip? I have used both the gloss and matte with my 1.5, and I find 1.5 too big for the gloss but I found it was easier with the matte, still not optimal but easier. Does matte generally take a bigger tip?
Thanks, my HVLP gun is an inexpensive TPC Global brand spray gun that I bought several years ago. It seems to do a good job but it is the only paint gun that I have used so I don't have anything to compare it to. Now that I have been painting with a gun for several years I would be willing to buy a better one if I thought it would make any difference. I would also like to buy a separate one to use for primer.
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