acrylic paint
JC Lewis
Can I get some help please? I'm a newbie at this art.
What would the mixing ratio be for mixing artists acrylic paint for
airbrush?
What would I mix it with?
What is a recommended air pressure?
Any help would be most appreciated.
Thanks
Jim
hawgeye
"JC Lewis" wrote...
> What would the mixing ratio be for mixing artists acrylic paint for
> airbrush?
Since most paint viscosities (thickness) can vary there is not set ratio.
You want the paint to be about the consistancy of light cream.
> What would I mix it with?
If it's water based acrylic, then water will do. Otherwise it's best to
consult the manufacturer (i.e: read the label).
> What is a recommended air pressure?
Depends on your airbrush, the needle/tip size, the viscosity of the paint
and what you are painting on. Generally porous cloth or fabric will need a
higher pressure than say metal, plastic, etc. You'll need to experiment.
--
hawgeye
www.hawgeye.com
JC Lewis
I have an Aztec dual control (?), with a common/general tip.
Is a 50/50 mix a good start?
say,,, 20psi starting press?
Jim
.
"hawgeye" <hawg...@spamcast.net> wrote in message
news:LfwOb.79061$sv6.180288@attbi_s52...
paulcorfield
Use 20 to 30 psi. I also prefer the black tip for acrylics. The general tip
will be ok though as long as you don't need to do fine detail.
Paul.
--
http://www.littlemisspinup.com
http://www.paulcorfield.com
"JC Lewis" <jcl...@telus.net> wrote in message
news:PODOb.31716$De.5097@edtnps84...
Harri Suomalainen
> Hello
> What would the mixing ratio be for mixing artists acrylic paint for
> airbrush?
>
> What would I mix it with?
> What is a recommended air pressure?
I've used some acrylics in tubes. They vary very lot from one
brand to another. Some are very viscous while some not. Some
might also have large pigment particles that will block the nozzle
immediately (the unsuitable paints, no water helps here). This
varies within the same brand too from one color to another.
As long as you're not spraying anything dangerous (like cadmium,
nickel, chrome, lead or cobolt based pigments) it's safe to try it out
by testing. All you can get at the worst case is more or less frustrated,
nothing worse than that can happen.
Generally, 50% ... 80% water seems the mininum for most tube
acrylics, even for the low to moderate viscosity acrylics. Depends
on the type of work being done (more water for detailing usually).
Rescently I tried a couple brands. One brand could not be sprayed
at all with a 0,3mm HP-C even if it had 80% water. It was way too
viscous. Another brand was fine for detailing even with a 0,2mm
HP-C and only 50% water. (HP 0,3mm nozzle is much like using
the 0,4..0,5mm on aztek and 0,2mm is pickier than aztek 0,3mm).
Moderate pressures like say 20-40 psi range (1,5..3bar).
A beginner needs to try..try..and try.. You'll see if it blocks the nozzle
or handles just perfectly. Adding more water solves problems with
too thick paints most often unless pigments wash out. Try it out
and know for yourself.
Good quality airbrush colors are much easier for a beginner. I'd
recommend those. It is not the cheapest but is is known to work.
Some tube acrylics are dirt cheap but finding the one that really
works needs a lot of testing and trying. Not all work at all.
--
Harri
quillion
Domestic Ammonia diluted further to around a 5% solution or less, will
easily clean up acrylic paint ( dried or not ). Just a drop added to a
water jar will improve the flowing quality of the acrylic.
Though Ammonia is corrosive particularly to copper & brass,and needs to
be flushed out with water if used in a brush.
Harri Suomalainen
news:buha95$hdp8l$1...@ID-207736.news.uni-berlin.de...
> A small point worth a mention...
> Domestic Ammonia diluted further to around a 5% solution or less, will
> easily clean up acrylic paint ( dried or not ). Just a drop added to a
> water jar will improve the flowing quality of the acrylic.
> Though Ammonia is corrosive particularly to copper & brass,and needs to
> be flushed out with water if used in a brush.
Hmm.. never tried that one.
Other helpful additives I've noticed include alcohol and isopropyl alcohol
(rubbing alcohol). Both tend to lower viscosity of some acrylics.
Isopropanol
also seems to make the spray finer often and can lower the tendency of
the paint to form dropplets at hard surfaces. They tend to dissolve acrylics
better too, so clogging problems are sometimes much less occurring. That
means a smoother flow. Something like up to 10% is the range to explore
usually.
Oh, retarders are great too. Many paints are fast drying and a bit of
retarder makes it spray nicely instead of constant tip dry problems.
Especially
some tube acrylics dry *fast*, they are intended often for applying in much
heavier layers than an airbrush does. (Even faster than Createx which I
like to retard a bit always too!)
..but that's another art, using additives. Unfortunately that depends on the
paint brand a lot. Some additives are also incompatible with some pigments.
Not a beginners task. A beginner is not sure what is the problem
and solving it with additives is quite difficult if it's based on a guess.
--
Harri
bigbadja
diluted binder lost when you thin with water.
It also enhances the flow through the airbrush.
Suggest : you use mesh from pantyhose as a filter.
: Store your mixed, diluted paints in film canisters.
"JC Lewis" <jcl...@telus.net> wrote in message
news:X9rOb.28600$Eq.14523@clgrps12...
JC Lewis
I'll give it all a try & see what'll work the best for me.
Cheers
Jim
Ps.. any other tips,,, just pass them on..
Thanks.
"bigbadja" <bigb...@ozemail.com.au> wrote in message
news:CriPb.16$X97...@nnrp1.ozemail.com.au...
airbrush ken
Instead of reducing with water, you can use the medium. Also if you
over reduce with water you can add the medium to increase it's ability
to adhere to the surface. Water just doesn't stick...lol...
It really doesn't enhance the flow, other than to thin the paint out.
I used to demo the stuff for them 10 years ago.
ken
Australian Airbrush Co.
nemo
WARNING. Use a good face mask and extractor when spraying acrylics. They
cause terrible throat and lung troubles and can also cause cancer when
breathed in. You'll feel like you've been gargling with acid.
Windsor and Newton and some other firms do liquid acrylics especially for
the airbrush. W&N's ones are very good. They also do an acrylic medium for
diluting water colours and gouache.
nemo
Looking at the other replies, there are some other very nasty chemicals
mentioned to which the same advice applies.
> >
>
> WARNING. Use a good face mask and extractor when spraying acrylics. They
> cause terrible throat and lung troubles and can also cause cancer when
> breathed in. You'll feel like you've been gargling with acid.
>
> Windsor and Newton and some other firms do liquid acrylics especially for
> the airbrush. W&N's ones are very good. They also do an acrylic medium for
> diluting water colours and gouache.
>
> http://www.winsornewton.com/index2.php
>
>
(Qualified Health and Safety Officer, BTW.)
quillion
COPD... believe Nemo... anything other than clean air is bad.
JC Lewis
Thanks
Jim
"airbrush ken" <airbru...@yahoo.com> wrote in message
news:8a8e3a18.04012...@posting.google.com...
nemo
You have my sympathy. I've got some idea what that might be like. A few
years ago I got a leg infection that led to a clot that broke up and gave me
five small Pulmonary Emboli. Heparin injections in the skin of the belly
(painful) and I got out of breath sitting still even.
Then I had another lot without warning and they couldn't find where it came
from. I was in hospital on oxygen for four days with that one! Then I had to
go in for an Ultrasound to see if I had a tumour in the abdomen and the day
before I slipped in the bath and ruptured my spleen and nearly died!! I'm on
Warfarin for the clots and Penicillin (tastes foul!) for being minus a
spleen for life now!
I stay sat down in the bath now! You gotta laugh or you'll cry!
zsine
You've a great sense of humour, must the seeds of a piece in there
somewhere :)
--
Neil
http://www.quillion.ukfsn.org
nemo
zsine <neo...@yahoo.com> wrote in message
news:buu3he$m5eu1$1...@ID-207736.news.uni-berlin.de...
Thanks. I do manage to see the funny side of most things. My list of
ailments is true though. I wish it were otherwise.
The worst of my humor is to be found on news:alt.fan.goons and
news:alt.humor.puns !
Nemo
nemo
Thanks. I do manage to see the funny side of most things. My list of
Vern
Will this Ammonia mix just clean Acrylic? How about Urethanes?
Or should I be asking...what other materials will this Ammonia Mix
remove?
What kind of Ammonia / Where can you buy this? Is this Household
Ammonia...or anything with Ammonia such as Windex?
Thanks in advance
Vern
bassplayer60
quillion <m...@privacy.net> wrote in message news:<buha95$hdp8l$1...@ID-207736.news.uni-berlin.de>...
zsine
> That is very interesting!
>
> Will this Ammonia mix just clean Acrylic? How about Urethanes?
> Or should I be asking...what other materials will this Ammonia Mix
> remove?
>
as a cheap clean up material , also as a flow imptrover with Acrylic
Inks, FW CALLI and assorted acrylic paints and Gouche paints,
I have seen no degrading effects on work going back several years.
Also I have used it to with a paint from Mobile Colors this is normally
diluted with Xylene or Cellulose thinners for spray use and use ammonia
to enable a water based dilution.
Really it's a matter of suck it and see.
In the dilutions used there is little or no smell and much safer than
the alternatives.
> What kind of Ammonia / Where can you buy this? Is this Household
> Ammonia...or anything with Ammonia such as Windex?
>
In the UK I purchase from a local ironmonger/houshold store as 'Houehold
Ammonia' which is a diluted 9% Ammonia solution. The stuff my mum used
to use for the weekly cloths wash. Just pure diluted ammonia,
At one time Ammonia was extensively used in French polishing from memory
that was kwown as .99 ammonia diluting that was a major event, powerful
stuff.
I have no experience of any other Commercial products.
> Thanks in advance
>
> Vern
> bassplayer60
>
Trust this is of use.
Neil
--
Quillion
No forbidding allowed