Spraying High Solids Clear

[xtremekustomz]

I was watching some videos on youtube and I noticed that alot of people that are spraying the high solids clear are putting it on really thick. Is this a normal process? I've always used a 3:1or 4:1 clear and know without a doubt spraying like they are there would be runs all over the place. Here are a few examples:

http://www.youtube.com/watch?v=aDt3X...eature=related
http://www.youtube.com/watch?v=nRaTO...eature=related

[ding]

you're watching the wrong videos

[fmr187]

the guy doing the red car made at least a half dozen passes in the same spot with the clear. i thought he would never finish doing the door. Is this considered a good way to lay on clear coat??

[TNshadetree]

the guy doing the red car made at least a half dozen passes in the same spot with the clear. i thought he would never finish doing the door. Is this considered a good way to lay on clear coat??

He also rotates his wrist while spraying, fanning back and forth instead of keeping the gun perpendicular to the surface. Terrible technique.

[style]

I was watching some videos on youtube and I noticed that alot of people that are spraying the high solids clear are putting it on really thick. Is this a normal process? I've always used a 3:1or 4:1 clear and know without a doubt spraying like they are there would be runs all over the place. Here are a few examples:

http://www.youtube.com/watch?v=aDt3X...eature=related
http://www.youtube.com/watch?v=nRaTO...eature=related

The first video was just boring the second one man that's alot of news paper old ass gun and down draft Booth.. that Guy had to get runs and spent alot of time blocking them out..he never let up on the trigger. One word..wow..I'd fire him..

[SamG]

We can sit here and criticize the guy all we want, but I didn't see any runs in that car...and it looked pretty decent (but a camera does funny things)

I also noticed that looked like a smaller than standard cup and if I had held my trigger for that long and sprayed for that length of time I would have ran out of clear long before he did. That tells me that whatever gun he was using was putting out a lot of fine spray; maybe even over-reduced which produces a lot of fog in the air but doesn't put much material on the car. That is most likely is what enabled him to spray over and over on the same areas without having curtains down the length of the car. When he pushed the rear door closed it sounded as though his finger 'stuck' to the freshly applied clear meaning it had tacked already. There's just not that much clear being applied to the car...

Did he rotate his wrist? yes, but I also noticed that his rotation or 'flip' was onto the adjacent panel. When he picked up on that panel his 'flip' was on the same area coming from the other direction...meaning he may have had fairly consistent coverage.

Is it how we are trained? no. I fact I was 'cringing' the whole time...but it might work for him...

SamG

[another2centsworth]

Sam I felt like I would have been in slow motion doing that. It's not good clear coating to me but I am used to getting on with it..

[turbocobra]

I thought I had heard/saw that the newer teaching techniques for spraying had move in the direction of fanning the gun and flipping your wrist like that rather than paralelling the gun as much, but I could be wrong.

I would like to know in general what tip is best for high solids clear?

Is a 1.4 tip better than a 1.2 or 1.3 for HS clear?

Is higher pressure say 32-35 compared to lower pressure (25-28) better for HS clear?

Is it better to reduce HS clear a little?

Thanks!

[another2centsworth]

1.3-1.4 for high clear and all true HS clears call for some reduction from my experience. It will show you on the tech sheet.

[Jayson M]

There is no general rule with HS clears,some like 1.2 some like a 1.4 or lower pressure vs high.It also depends what gun you are using.You have to follow the tech sheets and adding reducer is just not a good idea and can cause more problems.Every spray gun has a sweet spot where the product is atomized the best with finer droplets which is usually closer to the panel vs farther away which will give you grapefruit like texture.I spray sikkens superior 250 (60% HS) with 3-4 inches away from the panel with a 1.4 in my sata rp,controls wide open 32psi 75% overlap.Close and fast is the way to go IMO,you have to spray it like you want it to look and not expect the product to "flow out"to compensate for bad technique.