air brush spraying

[phil rainford]

hi all
im new to air brushing but have got an aztec 470 air brush with a small
compresser the problem is that when i spray (humbrol enamel), to get the
spray out of the air brush i have to thin the paint down over 50% and then
it runs like mad?(tried several of the nozzles) the compressor(mantua model)
is only small it is a plastic box about 12*10 inch and i was wondering if
this is the problem as there does'nt seem too much pressure behind it! and
cannot be regulated , i have seen a compressor in b&q with trap and reg
which seems to be quite a resonable price would this solve my problems

as ive said im new to air brushing and would like to know the correct ratio
to thin my paint is 50/50 too thin orwould 70/30 be better??

[stratton]

Airbrushes like a minimum pressure of about 20psi to operate but 30psi is
even better.
A 50/50 mixture is pretty good as to be thin enough to go through a system
that was designed really for water based mediums.
Whenever you pressurize air it creates a type of condensation problem which
on large resevoirs can be seen as resolved by a weekly drainage via a tap
underneath the tank. On small compressors this water content has no other
else to go but through the airbrush, so if you can create a water trap to
eliminate even some of the water, things will improve. A big tank
pressurized to say 40psi and reduced to 20/30 psi also creates a
steady/constant air flow over a longer period which is good for any
spraying. There are other small tweeks, but these ideas should resolve most.

"phil rainford" <phil.rainford@ntlworld.com> wrote in message
news:xqsca.12304$EA6.1823750@newsfep2-win.server.ntli.net...
> hi all
> im new to air brushing but have got an aztec 470 air brush with a small
> compresser the problem is that when i spray (humbrol enamel), to get the
> spray out of the air brush i have to thin the paint down over 50% and then
> it runs like mad?(tried several of the nozzles) the compressor(mantua
model)
> is only small it is a plastic box about 12*10 inch and i was wondering if
> this is the problem as there does'nt seem too much pressure behind it! and
> cannot be regulated , i have seen a compressor in b&q with trap and reg
> which seems to be quite a resonable price would this solve my problems
>
> as ive said im new to air brushing and would like to know the correct
ratio
> to thin my paint is 50/50 too thin orwould 70/30 be better??
>
>

[stratton]

Do you do a lot of spraying ?
If you are in the UK perhaps you might like to cast an eye at this weeks
"Special Buys" at
http://www.aldi-stores.co.uk/index.htm
Be at your local shop before they open on thursday (normally there is a
queue!).
It has a 24 litre tank but I'm not sure about it having a water trap.
It ought be a bargain at £69.99 - IF you have the room to keep it.

"stratton" <stratton1st@ntlworld.com> wrote in message
news:hk6da.15354$EA6.2283699@newsfep2-win.server.ntli.net...
> Airbrushes like a minimum pressure of about 20psi to operate but 30psi is
> even better.
> A 50/50 mixture is pretty good as to be thin enough to go through a system
> that was designed really for water based mediums.
> Whenever you pressurize air it creates a type of condensation problem
which
> on large resevoirs can be seen as resolved by a weekly drainage via a tap
> underneath the tank. On small compressors this water content has no other
> else to go but through the airbrush, so if you can create a water trap to
> eliminate even some of the water, things will improve. A big tank
> pressurized to say 40psi and reduced to 20/30 psi also creates a
> steady/constant air flow over a longer period which is good for any
> spraying. There are other small tweeks, but these ideas should resolve
most.
>
> "phil rainford" <phil.rainford@ntlworld.com> wrote in message
> news:xqsca.12304$EA6.1823750@newsfep2-win.server.ntli.net...
> > hi all
> > im new to air brushing but have got an aztec 470 air brush with a small
> > compresser the problem is that when i spray (humbrol enamel), to get the
> > spray out of the air brush i have to thin the paint down over 50% and
then
> > it runs like mad?(tried several of the nozzles) the compressor(mantua
> model)
> > is only small it is a plastic box about 12*10 inch and i was wondering
if
> > this is the problem as there does'nt seem too much pressure behind it!
and
> > cannot be regulated , i have seen a compressor in b&q with trap and reg
> > which seems to be quite a resonable price would this solve my problems
> >
> > as ive said im new to air brushing and would like to know the correct
> ratio
> > to thin my paint is 50/50 too thin orwould 70/30 be better??
> >
> >
>
>

[airact]

see
http://www.aldi-stores.co.uk/specials_01_11/offers_nav.htm
"phil rainford" <phil.rainford@ntlworld.com> wrote in message
news:xqsca.12304$EA6.1823750@newsfep2-win.server.ntli.net...
> hi all
> im new to air brushing but have got an aztec 470 air brush with a small
> compresser the problem is that when i spray (humbrol enamel), to get the
> spray out of the air brush i have to thin the paint down over 50% and then
> it runs like mad?(tried several of the nozzles) the compressor(mantua
model)
> is only small it is a plastic box about 12*10 inch and i was wondering if
> this is the problem as there does'nt seem too much pressure behind it! and
> cannot be regulated , i have seen a compressor in b&q with trap and reg
> which seems to be quite a resonable price would this solve my problems
>
> as ive said im new to air brushing and would like to know the correct
ratio
> to thin my paint is 50/50 too thin orwould 70/30 be better??
>
>