Best cheap Spray Paint Guns for DIY CNC builder or small workshop

[Philipp]

@ Boyan Silyavski,

As expected, your pics shows these cheap crap HVLPs without having the needles extracted. For example, the so called "K3" is a cheap copy of the Iwata's HVLP - I guess you already know that. According to instructions, the yellow marked screw need to be extracted in order to release the spring and slide the needle out and clear the way to easily clean the parts. None of this can happen and as far as I see in your picture, you also cannot remove the needle. So, I wonder how you clean the needle... or maybe you dont?

Show the K3 FULLY disassembled! Can you? I bet not! Know why? Because these screws (that should be possible to be extracted) are manufactured by Chinese copy makers as one part fixed on aluminum body.

Long story short? As said before, I was fooled by your enthousiastic review and believed that these cheap crap can do the job. Obviously, they cannot

[cropwell]

On all of my 4 spray guns, you do not need to fully disassemble to take out the needle. You just fully unscrew the paint volume screw, remove the return spring and pull out the needle. This K3 looks as though it is the same, so why the problem?

[Philipp]

On all of my 4 spray guns, you do not need to fully disassemble to take out the needle. You just fully unscrew the paint volume screw, remove the return spring and pull out the needle. This K3 looks as though it is the same, so why the problem?

@ cropwell,

This K3 Chinese copy is different. To explain in details (have a look into the attached picture):

• The paint volume is regulated by the screw marked with the RED circle. This screw cannot be fully extracted, but no problem about it, since it does not effect cleaning process.

• The screw marked with the the GREEN circle, only determines how far the trigger can be pulled. For example, you can preset a trigger pull to the middle, in order to achieve a specific paint cone and remain as is. This screw can be fully extracted, but there is no effect to anything else, since the trigger spring is secured by the screw marked into BLUE circle.

• The part marked with the the BLUE circle, guides the needle and secures the trigger spring. Normaly (as happens on genuine Iwata model) this part should be possible to unscrew and release the spring AND the needle by gently pulling back. Unfortunatelly, this part, CANNOT be unscrew because it is part of the aluminum frame. The entire "screw" appearance of the part, is just decorative - not functioning! Therefore, the trigger spring and needle are traped there and cannot be extracted!

I hope the above explanation, can clearly give a picture of the problem.

[Philipp]

Unfortunatelly, this part, CANNOT be unscrew because it is part of the aluminum frame. The entire "screw" appearance of the part, is just decorative - not functioning! Therefore, the trigger spring and needle are traped there and cannot be extracted!

By the way, this is how the spray gun should be disassembled, but I guess that the manufacturers of this Chinese-made piece of crap (previously presented as "the purchase of the Century"), did not bother to think how this tool will be cleaned after use! Typical Chinese-made useless crap for once paint and throw to garbage.

DON'T BUY CHEAP HVLPs - TOTAL WASTE OF MONEY

[m_c]

I've got two cheap paint guns, and I've never had any reason to remove the needle, or even dismantle the nozzles, so I'm failing to see why you're making this out to be such a big problem. Flush the gun once you're finished with it, and it's not a problem.

But I'm also wondering why you're only contribution to this forum has been to criticise these spray guns?

[cropwell]

Looks like I am just going to have to buy one, just for the hell of it. It would make sense for part #17 on the diagram to be left hand thread. Just a thought. These Chinese must be damned clever if they can assemble the needle assembly with part #17 in the body already.

[Philipp]

I've got two cheap paint guns, and I've never had any reason to remove the needle, or even dismantle the nozzles

I am really curious to hear HOW you clean the tools after use.

Flush the gun once you're finished with it, and it's not a problem.

Just fush the guns? Really? Wow! I guess you never use real enamel paint, lacquer or epoxy (!!!) as first post claims. Well, maybe I am wrong, but I always disassemble my paint tools after use, clean them with proper thinner and assemble again to be ready for use. If this sounds "too much", I am sorry for respecting my tools "too much".

But I'm also wondering why you're only contribution to this forum has been to criticise these spray guns?

...maybe because these cheap Chinese-made tools are totaly useless? Do you think that I would criticise if I had great tools with low price? I say again - I forgot the most basic rule "if you pay peanuts, you buy monkeys" and I was stupid enough to think that purchasing cheap tools would also do the job. That is why!

These Chinese must be damned clever if they can assemble the needle assembly with part #17 in the body already.

Well, I do not know if they are "damned clever to assemble the needle assembly with part in the body already", but I know that they are smart enough to fluid the market with cheap copies that do not work.

[m_c]

...maybe because these cheap Chinese-made tools are totaly useless? Do you think that I would criticise if I had great tools with low price? I say again - I forgot the most basic rule "if you pay peanuts, you buy monkeys" and I was stupid enough to think that purchasing cheap tools would also do the job. That is why!

Let's just say, I'm always sceptical of people who join a forum, and then only post on a single topic.
From experience, that tells me either the poster has an axe to grind for some reason, or they have an ulterior motive/vested interested.

Given that your first post made your point, but have then essentially repeated that point 4 more times, I'm still undecided.


And just for reference, over the past few years, I've used my guns for tractor enamel, along with water and oil based paints. Flushing works for me, but then some peoples idea of flushing is just running a little bit thinner/cleaner through. I always flush until I'm getting pure thinner/cleaner out, with no hint of colour. Then if it's the final clean, I'll fill it with thinner and let it sit for a couple hours, before giving it a final clean out.
If it was to block, I'll just spend another £20/30 on a new one. Given my current guns must be over 5 year old, and are only used 2 or 3 times a year, I'm not going to spend several hundred on a spray gun.

[cropwell]

I received my K3 spray gun this week. Of course I had to dismantle it to clean it !

The gun requires the use of specialised equipment to disassemble, fortunately I had the kit needed, a 13mm six sided deep socket and ratchet handle.

[Clive S]

I received my K3 spray gun this week. Of course I had to dismantle it to clean it !

The gun requires the use of specialised equipment to disassemble, fortunately I had the kit needed, a 13mm six sided deep socket and ratchet handle.

Blimey Rob where did you manage to find the equipment I've been looking for ages.