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5 replies to this topic
Posted 14 January 2008 - 06:31 PM
Heres a bluegie crank I just finished. I know that there was a little bit of splatter, and i was wondering if I should water down the paint, or if that means its too thin. comment please
Posted 15 January 2008 - 02:23 AM
Kribman - I just had a half page answer here, just lost the lot ****** gee sometimes posting is frustrating for a one finger typist - no more comment, I will have another go later. pete
Posted 15 January 2008 - 02:55 AM
Very interesting "rusty" paint job, although it seems that you had a paint problem I think you should give it a go like that.
Posted 15 January 2008 - 03:40 AM
Kribman – I cannot zoom your picture here (I’m at work), but the colours do look a bit washed out – maybe you have watered the paint down too much - add some binder/medium to give it some body, with lots of water and low medium content, paint droplets tend to spread out rather than stick on the surface as individual dots with a defined meniscus. If you are talking about the ‘bars’ on the shoulders, you need to either make a stencil OR do these lines in one pass with the CLEAN brush, with low pressure, cap removed and as close as possible to the job (my hands are too shaky these days)– not too fast not too slow, paint just the right consistency and heaps and heaps and heaps of practice- the further from the job the brush tip is, the wider the paint cone (wider line).
A plywood board sealed and painted in your undercoat colour is great for testing before you do anything on a lure, you can gauge how wide a line will be, how much paint is hitting the surface, is there too much pressure which may be spreading the watered down paint etc.
If there is spattering, and your brush is CLEAN, it may be too much pressure with the paint too thin, try low pressure and work up. – Check the needle and cap, the needle may be bent and this catches paint, which eventually flies off in a larger blob rather than a mist – same for the cap, if it has a hardened blob, wet paint clings to it until it is finally blasted off as a small blob. Remove and clean the needle, cap and tip and flush the brush with ethanol (Denatured alcohol), as Fatfingers has said somewhere here, this is the cure for most paints – before during and after every colour, flush it with ethanol (also called methylated spirit here) and you should only have to pull it apart every few months for a good thorough clean.
Finally, when fully open with paint in cup, if you can hear the brush has an intermittent hiss rather than constant, its probably some hardened paint on the needle or stuck in the tip – or worse still the dreaded split tip - I had this happen (30 years ago), I dropped the brush and the needle was driven into the tip, splitting it – it took me days to work out what was wrong, you need a magnifying glass to see it and it’s major overhaul time. So besides, don’t drop your brush – when replacing the needle, insert it gently all the way with the trigger off, so it just seats in the tip (not tight). Come to think of it this can be another reason for splatter- if the needle is not seated, paint can leak past the needle and pool on the needle tip, just waiting for that blast of air to blow it off as a blob or splatter.
Hope you get something out of this, it is by no means a critique of your work- it’s just that these tiny spray guns need tender loving care and – clean, clean, clean.
Also I have assumed you have an overhead/double action brush- go for it, practice practice, practice. pete
Posted 15 January 2008 - 08:30 AM
single action, makes everything a pain in the butt! thanks for the advice, I'll check for bends or splits in the needle and get back to you.
Posted 15 January 2008 - 11:27 AM
Kribman, I also suggest that you have your paint mixed thoroughly. I had a problem with paint splatter for a time and found that my Creatix was not mixed enough before painting with it. Started shaking for 2-3 min. and have not had that problem since. Don't know if you are using acrylics or not. Oh well, just my .02. God luck to you.