| [ Total Views: 1081 | Total Replies: 8 | Thread Id: 78346 ] |
|
|
 pete wood
A.k.a.: figure itout
23 Windows of Awesome
Posts: 6828
Threads: 389
Registered: January 15th, 2004
Member Is Offline
Location: Nth Nth StMarys, Sydney
Theme: UltimaBB Pro White
Mood: upgrades = jackstands
|
 posted on August 11th, 2009 at 03:10 PM |
|
|
ahhhhh!!! gun spitting can't stop it!
I have a gravity fed spray gun that I just can't get to stop spitting. I've got acrylic gloss in it (1.4mm nossle) and I've cleaned it within an
inch of it's life yet it's spitting like a rabid camel!
what am I missing?! 
should I clean it out with thinners first?
|
|
|
matt
A.k.a.: Choco
Insano Dub Head
Posts: 743
Threads: 85
Registered: December 5th, 2002
Member Is Offline
Location: Mt Gambier SA
Theme: UltimaBB Pro Blue ( Default )
|
| posted on August 11th, 2009 at 05:06 PM |
|
|
maybe the thinners are affecting the acrylic (if it is water based)??????? or the paint is still to thick
matt
|
|
|
 helbus
A.k.a.: Pete S
Super Administrator
Mad fabricator, paint and body
Posts: 7386
Threads: 312
Registered: September 1st, 2002
Member Is Offline
Location: In the garage chopping cars into bits
Theme: UltimaBB Pro Blue
Mood: In the thinking chair
|
| posted on August 11th, 2009 at 07:11 PM |
|
|
Sounds like needle is not fully returning after action.
|
|
|
lohoon
Wolfsburg Wizard
Posts: 466
Threads: 67
Registered: September 5th, 2002
Member Is Offline
Location: muswellbrook
Theme: UltimaBB Pro Yellow
|
| posted on August 11th, 2009 at 07:48 PM |
|
|
make sure the fluid tip is tight and the needle is seating properly.
|
|
|
helbus
A.k.a.: Pete S
Super Administrator
Mad fabricator, paint and body
Posts: 7386
Threads: 312
Registered: September 1st, 2002
Member Is Offline
Location: In the garage chopping cars into bits
Theme: UltimaBB Pro Blue
Mood: In the thinking chair
|
| posted on August 11th, 2009 at 08:34 PM |
|
|
You could also check the gland nut on the main needle is not too tight and stopping the needle from returning. Or the spring tension on the back of
the needle is not tight enough. Or the needle is not clean along the shaft and is gripping on the gland seal. So many reasons, fixes etc. If full
disassemble, clean and reassemble give the same problem, then there must be a part needing replacement, or a different adjustment.
|
|
|
pete wood
A.k.a.: figure itout
23 Windows of Awesome
Posts: 6828
Threads: 389
Registered: January 15th, 2004
Member Is Offline
Location: Nth Nth StMarys, Sydney
Theme: UltimaBB Pro White
Mood: upgrades = jackstands
|
| posted on August 11th, 2009 at 11:43 PM |
|
|
sorry, I didn't make myself clear. it spits rather than spraying the paint evenly. the paint is reasonably thick, but I thinned it down a fair bit I
thought. does it need to be thinned more?
|
|
|
pete wood
A.k.a.: figure itout
23 Windows of Awesome
Posts: 6828
Threads: 389
Registered: January 15th, 2004
Member Is Offline
Location: Nth Nth StMarys, Sydney
Theme: UltimaBB Pro White
Mood: upgrades = jackstands
|
| posted on August 12th, 2009 at 02:50 PM |
|
|
just pulled it apart again and cleaned it within an inch of it's life. not sure if it's any better though. 
|
|
|
Dirtbag
Wolfsburg Wizard
What the hell does standard mean?
Posts: 407
Threads: 22
Registered: August 2nd, 2009
Member Is Offline
Location: Sunshine Coast Queensland
Theme: UltimaBB Pro Blue ( Default )
Mood: boobtastic
|
| posted on August 13th, 2009 at 09:44 PM |
|
|
Hi Pete. Acrylic needs to be thinned 100 parts paint to 150 parts thinners. So 1 litre of paint when thinned is 2.5 litres, so it's pretty runny. As
for the 1.4mm gun, that's a little small for acrylic. It's more of a 2 pac nozzle set up. I use 1.7mm for acrylic. but seeing as you said you've
thinned it right out it shouldn't be the problem. Make sure the breather hole in the top of the cap isn't clogged. Like hellbus says, there are so
many things that can upset a spray gun.
Good luck.
|
|
|
pete wood
A.k.a.: figure itout
23 Windows of Awesome
Posts: 6828
Threads: 389
Registered: January 15th, 2004
Member Is Offline
Location: Nth Nth StMarys, Sydney
Theme: UltimaBB Pro White
Mood: upgrades = jackstands
|
| posted on August 14th, 2009 at 10:28 AM |
|
|
thanx mate, I got it right. used a 1.8 nozzle and thinned it right down until it was runny enough. all good now.
|
|
|
