dingo
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Post by dingo on Sept 7, 2009 2:30:26 GMT
I have just acquired a new to me but almost brand new air brush, it does not look like it has been used at all upon looking at it. Now what I would like to know is as I use acrylic paints only what do I use to thin this stuff or do I do what I have done before get the paint supplier to do it for me letting him know that it's for a hobby air brush and not a car spray gun. Dingo
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Post by The Hooded Claw on Sept 7, 2009 7:47:11 GMT
I don't know if you can get them but if you're looking to spray Acrylics then I would recomend the new Revell Aquacolours. The thin and clean up with water and spray really nicely.
Oh and they're cheap.
THC
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dingo
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Post by dingo on Sept 7, 2009 11:39:19 GMT
THanks Claw I'll try my LHS tomorrow (Tues) and ask them if they sell it. Dingo
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Post by foxy on Sept 9, 2009 8:03:01 GMT
Most water based acrylics I find are good for air brush's, and water is all you need to thin or clean air brush with, but I also put a little air brush solvent to the last clean up at the end.
If leaving the air brush for sometime with out spraying, then a more extensive clean is needed.
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dingo
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Post by dingo on Sept 10, 2009 16:39:45 GMT
Thanks guys for U'r help now wot I would like to know is wot is the ratio of paint to thinning product, ie: 2:1, 4:1 or is it just a suck it & see type thing. Dingo
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ptcruiser
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Post by ptcruiser on Sept 10, 2009 21:05:50 GMT
Hi Dingo two things: 1) decide which solvent to use; whether manufacturers own, water, IPA, or whatever 2) the general guideline is to thin down to the consistency of milk. Now I've never seen anyone specify full fat, semi skimmed or fat free (!!!!!) but I think you get the general idea.
I can't recall whether you said you had a compressor or what level of control of airflow you have, but the best thing to do is have a practice to get the balance right that you are happy with.
Hope that helps a little
Rich
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Post by foxy on Sept 11, 2009 10:00:18 GMT
Haha, thats rich, Rich. Never heard it expressed so eloquently. But thats the truth, you have to experiment, there's no fixed way of explaining this mixing lark.
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dingo
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Post by dingo on Sept 12, 2009 11:25:05 GMT
Rich, I'll be using my garage compressor as it can go right down to practically zero bar in pressure, I used it the other day when I sprayed some floor shine and it worked fine on just an air pressure of 2 strokes up from zero anymore than that and I think it would blow the air brush into the next state or maybe even country (New Zealand) Dingo
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ptcruiser
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Post by ptcruiser on Sept 13, 2009 19:37:42 GMT
Sounds as if you're in the right direction, but it would be advisable to get a couple of bits if you can, and they need not cost the earth.
A moisture trap that fits between the output of the compressor and the airbrush will stop any water getting into the paint. This will cause different problems.
Secondly a presure guage. You can find units that have both the trap and the gauge.
For modelling you will rarely need to go as high as 40psi (2.76bar), typically in the region of 20psi (1.38bar) will be adequate.
Rich
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dingo
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Post by dingo on Sept 23, 2009 2:30:27 GMT
Rich, sorry for the late reply as I have been busy with our gun club I am the scorer there and that means signing score cards so the guys can renew their gun licenses, anyway on U'r two suggestions yes I have a moisture trap & a the pressure gauge I use the one attached to the compressor even though I have to almost stand on my head to see what it says I can't use it at the moment as the weather is pure rubbish at the moment not only very warm but raining as well oh boy what a week we've having. Dingo
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ptcruiser
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Post by ptcruiser on Sept 23, 2009 7:02:59 GMT
Well at least you're getting rain. That's been a bit of a problem for past couple of years hasn't it?
Cheers Rich
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Post by depressedlemur on Oct 2, 2011 9:59:47 GMT
Just wanted to sick my oar in on this one. I am relatively new to airbrushing having finally got one earlier this year, and found mixing paint each time a right pain as I never seemed to get it the same each time. However, having used some Vallejo Model Air (Good stuff BTW), I got to thinking, and found you can buy the little dropper bottles for around 15p each if you shop around. Now when I mix a batch, I can do so in batches. I just note on the outside what the colour, manufacturer, solvent and ratio paint to water/thinner used. if it works, I have my magic mix, if not, i can add either paint or solvent to achieve a better result. Tis is making my life easier so thought I'd pass it on. PS, the next step will be to start trying to match my results to FS,RAL,BS standards for future references.
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Post by jonathanidf on Oct 31, 2013 17:53:45 GMT
Thanks guys for U'r help now wot I would like to know is wot is the ratio of paint to thinning product, ie: 2:1, 4:1 or is it just a suck it & see type thing. Dingo Hi Dingo, I've been happy using Tamiya & Lifecolor acrylic thinned with water usually in a 40:60% mixture, so slightly more water than paint. There is trial & error involved until you are happy with the mix & results. lfecolor suggest diluting until the paint is a consistency similar to milk & I have to say this works for me. In terms of mixing proportions, I use the 5ml medicine syringes available with bottle of Ibuprofen etc. A pharmacist should be able to supply them. The acrylics don't damage the plastic & they wash out easily. I use a decent airbrush cleaner at the end of a spraying session to keep the brush in good condition into a airbrush cleaner to catch the fluid & the fumes. that stuff is horrible!
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