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Help!!!! paint spraying nightmare
mad-butcher - 10/9/08 at 11:03 AM

Any paint sprayers out-there I'm having one hell of a nightmare, never ever had this before, HVLP gravity feed gun.
trying to spray nose cone black,high build primer went on OK. trying to get the gloss on is turning out to be a nightmare gloss black cellulose & standard thinners 50/50 as soon as the paint is hitting nose cone it's developing a milky coloured coating,
rub it down try again with fresh paint same effect, any ideas only thinners I could get on sunday was from a mates workshop which was standard thinners,is it likely to be the thinners or is there another cause, 50 deg in workshop compressor and filter drained. will it just polish out with G3.
Many Thanks
Tony


minitici - 10/9/08 at 11:07 AM

Standard cellulose thinners is good for cleaning spray guns
You need good anti-bloom premium quality cellulose thinners.


Paul TigerB6 - 10/9/08 at 11:11 AM

As above - you really need good quality anti bloom thinners thats compatable to the paint. I'd look to get it from the same supplier myself to ensure its fully compatable.


mackei23b - 10/9/08 at 11:11 AM

Yes, I'll second anti bloom thinners

Cheers

Ian


Agriv8 - 10/9/08 at 11:13 AM

by no means an expert and I could be well of the mark.

Does you mate use a heated both ? or spary in a warm enviroment ? use profesional compresor / setup ?

When spraying at home I used anti bloom thiners and its somthing to do with the dealing with the moisture in the air / compresor.

I also have a inline moisture - filter drain / presure regulator are you runnning one of these ?

I am sure thst someone who actaully knows will be along shortly but knowing the above might assist.

regards

Agriv8


Mr Whippy - 10/9/08 at 11:18 AM

sorry as above, wrong thinner


mad-butcher - 10/9/08 at 11:19 AM

cheers all thought it might be something to do with the thinners, paint is by the same company i always use Autopaint International.thinners ius just some cheap shite he had lying around.
many thanks


adithorp - 10/9/08 at 11:25 AM

Anti bloom thinners required but it'll still tend to happen if its damp where your spraying.

adrian


Peteff - 10/9/08 at 11:34 AM

Have you got a trap in the line? It sounds like damp in the air. Some fast thinners will help with the flash time but they won't get rid of all the bloom if it's damp.


Mr Whippy - 10/9/08 at 11:51 AM

as above too

loads of moisture in air tanks, has to be filter out, humidity gets increased when the air is compressed. Watch out for cold drafts too, if you can see mist in the air then try lightly preheating the nosecone with a hair drier before spraying but not after you have sprayed

[Edited on 10/9/08 by Mr Whippy]


Richard Quinn - 10/9/08 at 11:56 AM

Old thinners can pick up a bit of moisture in storage too. Not that we use them for spraying but, all of the compressors we use at work have expensive moisture traps and oil filters (not the usual workshop ones) on them and it is quite surprising what they collect.


mad-butcher - 10/9/08 at 12:18 PM

compressor and filter are drained weekly, as said never had this problem before, just nicked a litre of antibloom from another mate problem cured
many thanks
Tony


Paul TigerB6 - 10/9/08 at 12:21 PM

Sorry for the thread hijack but guess this is relevant to the rest of the thread - I need a new regulator / moisture trap to suit paint spraying needs. Any recommendations at all?? I did think about looking at Stafford this weekend with the other favoured option being Machine Mart. Got a nose cone to spray myself probably next week!!

[Edited on 10/9/08 by Paul TigerB6]


mad-butcher - 10/9/08 at 02:13 PM

If the ussual fella is there generaly in the middle of the main hall he does all sorts of air tools
tony


Paul TigerB6 - 10/9/08 at 03:41 PM

quote:
Originally posted by mad-butcher
If the ussual fella is there generaly in the middle of the main hall he does all sorts of air tools
tony


Cool. I'll take plenty of cash with me then. Does anyone know if you can buy a filter regulator with detachable lubricator at all?? Obviously dont want a lubricator for spraying but do with general air tools?


Agriv8 - 11/9/08 at 07:18 AM

bought mine at Aldi but yes I suspect they will have one with an in-line oiler.

Officially i think you are suppose to keep a dry line for Spraying ( only to be used when spaying and your oiler is off) .

Personally I oil any air tool with a drop of oil before I use it. So dont bother filling my inline oiler.

regards

Agriv8