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  #1  
Old 05-21-2019, 06:08 PM
Dave S Dave S is online now
 
Join Date: Nov 2018
Location: Eagan, MN
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Default Sprayer for Priming

To prime or not to prime...that is NOT the question.

I have been using rattle can version of SEM primer thus far, however as I primed the ribs for the wing, I noticed I started going through cans quite quickly.

There is a lot of convinces and ease of use in the rattle cans, but I'm starting to consider a sprayer. I have a wagner paint sprayer which I know will now work, so considering a HVLP. I have heard a few folks mention that harbor freight has an inexpensive one.

What is everyones thought on moving up to a sprayer, vs staying with a rattle can moving forward with the wings and fuselage, and any advice on a HVLP sprayer?

Thanks


Dave
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  #2  
Old 05-21-2019, 07:08 PM
Kyle Boatright Kyle Boatright is offline
 
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Location: Atlanta, GA
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In general, you'll come out cheaper buying paint/primer in bulk than using rattle cans, and you'll (likely) be using higher quality paints too.

The "purple gun" from Harbor Freight is my go-to cheap gun. Get the one with the 20 ounce cup and the regulator included. About $30 when it isn't on sale, far less when it is. I've sprayed everything from epoxy primer to high build primer to single stage to base/clear with it and it is a really good, inexpensive solution.

https://www.harborfreight.com/20-oz-...tor-62381.html
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  #3  
Old 05-21-2019, 07:20 PM
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JonJay JonJay is offline
 
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The primer product you intend to use should have a paint gun orifice recommendation in their instructions. Just make sure your gun has a tip size iin that range.
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  #4  
Old 05-21-2019, 07:21 PM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default HVLP

Quote:
Originally Posted by Kyle Boatright View Post
In general, you'll come out cheaper buying paint/primer in bulk than using rattle cans, and you'll (likely) be using higher quality paints too.

The "purple gun" from Harbor Freight is my go-to cheap gun. Get the one with the 20 ounce cup and the regulator included. About $30 when it isn't on sale, far less when it is. I've sprayed everything from epoxy primer to high build primer to single stage to base/clear with it and it is a really good, inexpensive solution.

https://www.harborfreight.com/20-oz-...tor-62381.html
Agreed. Use a 20% coupon and save even more. I would recommend a disposable cup solution like 3MPPS. Cuts down on cleaning. Gab a couple red disposable water/oil filters too. I prefer the RTI mini regulator.
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  #5  
Old 05-21-2019, 07:56 PM
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9GT 9GT is offline
 
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Location: Southern Michigan
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Quote:
Originally Posted by Kyle Boatright View Post
In general, you'll come out cheaper buying paint/primer in bulk than using rattle cans, and you'll (likely) be using higher quality paints too.

The "purple gun" from Harbor Freight is my go-to cheap gun. Get the one with the 20 ounce cup and the regulator included. About $30 when it isn't on sale, far less when it is. I've sprayed everything from epoxy primer to high build primer to single stage to base/clear with it and it is a really good, inexpensive solution.

https://www.harborfreight.com/20-oz-...tor-62381.html
Yep,,,good gun for this purpose. They go on sale sometimes for under $10,,,,ad the 20% coupon and your at $8. I always have a couple NIB on my shelf in case I am too lazy/tired to clean it,,,,I just throw it away and grab a new one off the shelf next time I am in need, and buy another one when on sale again. They have a new line of "professional" spray guns in their line-up that run around $100 and wonder if anyone has tried it for a finish coat. I have a DevilBiss Tekna using DeKups for finish coat but would not hesitate to try one if I didn't.
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  #6  
Old 05-21-2019, 08:09 PM
rapid_ascent rapid_ascent is offline
 
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The harbor freight gun seems to be sufficient for primer. I like the one with the regulator but the others are good as backups. These are cheap guns so they do break or the cups crack and leak. I've gone through a few during my build but they are cheap enough to not worry about it. Look for sales or coupons the price can be discounted quite a bit.
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  #7  
Old 05-21-2019, 10:01 PM
Dave S Dave S is online now
 
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Thank you all, the comments were very helpful.
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  #8  
Old 05-22-2019, 04:14 AM
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rzbill rzbill is offline
 
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Are we talking about priming the whole exterior at once or priming the individual fabricated pieces? I can't see using the bowl of a full size gun for small parts without wasting a lot of mixed primer.

I used an air brush for 90% of the primed parts of my standard build. The bigger surfaces like tips and cowl were done with a cheap (HF ish) touch up gun, For those that don't know what a touch up gun is, it is simply a full function gun with a small supply bowl. The trigger is different too but that is not important. The small bowl is.

If I chose to paint the exterior, then I would get a full sized gun but I would still use the air brush for fabricated parts.
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Last edited by rzbill : 05-22-2019 at 04:17 AM.
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  #9  
Old 05-22-2019, 04:34 AM
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maniago maniago is offline
 
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With Akzo, I use a primer pistol exclusively for all my interior and a few exterior parts, tho for a full exterior in prep for a paint job, Id go with a proper HLPV gun. I have the HF purple gun but have yet to actually use it.
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  #10  
Old 05-22-2019, 04:54 AM
Kyle Boatright Kyle Boatright is offline
 
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Location: Atlanta, GA
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Quote:
Originally Posted by rzbill View Post
Are we talking about priming the whole exterior at once or priming the individual fabricated pieces? I can't see using the bowl of a full size gun for small parts without wasting a lot of mixed primer.
.
There is little or no difference in the amount of paint wasted or cleaning time between a big gun and a little gun. In both cases, you mix slightly more paint than you think you'll need (nothing worse than running out of primer 97% through the job), spray the items, and clean up.
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