Reducers
Thread Starter
Drifting
Joined: Feb 2003
Posts: 1,976
Likes: 2
From: San Antonio Texas
Reducers
With the SPI paints; can someone give me a good set of rules as for when do you use a reducer and how much is generally used? Does it help with orange-peel or what? Thanks
Drifting
Joined: Apr 2007
Posts: 1,442
Likes: 87
From: bluff dale tx
follow the tech sheets for spi products. orange peel is created by too much fluid or poor gun adjustment. i would suggest you visit the spi users forum for help with spi products. gun choice is also important. a cheap hf purple gun will not produce the finish your after.
as for reduces i use 885 at all times. the slower the cure the better. spi epoxy works good with 10 to 15 % reduction.
http://spi.forumup.org/index.php?mfo...8b4f1a27497cf9
as for reduces i use 885 at all times. the slower the cure the better. spi epoxy works good with 10 to 15 % reduction.
http://spi.forumup.org/index.php?mfo...8b4f1a27497cf9
Drifting
Joined: Jan 2006
Posts: 1,944
Likes: 22
From: Yooperville MI
Yes, first you need the gun set up, but using the correct reducer for the temperature range you are painting in will allow the paint to flow sufficiently and minimize orange peel. If the paint dries too fast, it can't flow enough and the surface will be rough. For example, using a 65 degree reducer in 90 degree weather will cause the reducer to evaporate to quickly. The tech sheets will give you the temperature ranges for each reducer.
Spray technique gas a lot to do with orange peel as well.
Spray technique gas a lot to do with orange peel as well.
Drifting
Joined: Apr 2007
Posts: 1,442
Likes: 87
From: bluff dale tx
orange peel = fluid control
sags = air pressure
i use 885 even in winter . my booth is always at least 70-75 degrees in winter. summer time i switch to desert which is about 95 i guess. a slow cure allows tail solvents from under coats to escape. i try to shoot at sun up if possible .
sags = air pressure
i use 885 even in winter . my booth is always at least 70-75 degrees in winter. summer time i switch to desert which is about 95 i guess. a slow cure allows tail solvents from under coats to escape. i try to shoot at sun up if possible .
Thread Starter
Drifting
Joined: Feb 2003
Posts: 1,976
Likes: 2
From: San Antonio Texas
Thank you all for your help. I suspected, but did not know if this was the problem. On my first experimental shoot with Epoxy, I got bad
orange peel, so I tried 15%,as per porchdogs suggestion. That did the trick. I also checked out SPIs' site with a Q&A forum and it was confirmed there...10-20%.
orange peel, so I tried 15%,as per porchdogs suggestion. That did the trick. I also checked out SPIs' site with a Q&A forum and it was confirmed there...10-20%.
