blending silvers
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Hey folks,
Looking for some advice, been having problems with some of my jobs lately, mainly silvers. The problem is that my blend panels end up darker then the next panel. (normally between front door and rear door when painting rear quarter and using rear door for blend area) I am using Sikkens solvent with Lesenol Pro Air Clear.
I prep all primer areas with 320 da with interface then chase it with 600 da, my blend panels I use 600 da with interface, seal all primer areas and use blending additive on my blend panels. I make sure that I dont get crazy with the blending additive and run it to the edge of the panel and I stop my first coat of clear about 3 inches from the edge then a full wet coat on my last coat of clear. We sand and buff everything once completed to match peel and get rid of any trash.I also tack after every coat to catch any overspray on the blend panel and I dont hammer the first coat of clear on to avoid rewetting the base and making it dark.
We are also using an old crossflow booth with no heat cycle.
I mainly have this problem with older cars and I suspect that it might be a problem with faded paint but I have had some newer cars do this as well. The blends turn out good but it seems that the painted panel will be darker then the non painted one.
Thanks in advance
Chuck
to much clear on silvers will darken them maybe?? so all u are doing is having clear at the end of your blend panels and that why darker up to the panel u never painted
[quote=”painter123″ post=19186]to much clear on silvers will darken them maybe?? so all u are doing is having clear at the end of your blend panels and that why darker up to the panel u never painted[/quote]
I believe it is just that extra 2 mils or so of clear over the old clear changes the way the light refracts out. I’ve had similar issues with all clears. Usually it looks good in the sun, but occasionally it bites me in the a$$.
When you are doing a blend the correct way is to apply your first coat of clear just past your blend.Then apply your second coat over the complete panel.The best way to describe it is like a swimming pool,the deep end looks like a different color compared to the shallow end,so the more clear you put on can change the color.Every course I have been to teaches this,but I very rarely do it :p
I looked at it again last night with the sun gun on it and it looks better that way, I am going to try buffing up the next panel a bit today to see if that changes anything. If not I might try a different clear, but I do think that it will look better in natural sunlight. I dont normally notice this issue in the booth or in the paint shop. It normally pops up in the bodyshop when the techs start putting it back together.
Thanks
Other than only having one coat of clear at the edge of the blend panel there isn’t much you can do. Make sure your not getting your blend out too far and getting some overspray by the edge.
It looks worse under certain lights also. Some shop lights make it look worse than it is.
You could always do the customer a favor and add some black door edge guards for free with the repair! :whistle:
[quote=”Jayson M” post=19199]When you are doing a blend the correct way is to apply your first coat of clear just past your blend.Then apply your second coat over the complete panel.The best way to describe it is like a swimming pool,the deep end looks like a different color compared to the shallow end,so the more clear you put on can change the color.Every course I have been to teaches this,but I very rarely do it :p[/quote]
Thats what I’ve been taught too, but never really done it. When we were using medium solids clears, I often wondered/worried if there would be enough mil build of clear in that one coat to give proper durability/UV protection down the road, and not delaminate. I’d rather risk the odd job being a little off then risk having a product that isn’t durable.
I had this problem a few years ago, not so bad that it was that noticeable but bad enough I didn’t like it. The clear I was using had a slight amber look to it and it changed all my lighter colors. We switched clears, and I haven’t had that problem since.
Also going overboard on blending clear will cause this, Had it happen a couple weeks ago on a silver van that fought me every step of the way.
I looked at it today when it came back over to get the bumpers buffed and it didn’t look so bad in my shop, and it looked decent outside. I think I might look into another clear to have around when doing silvers and golds. We use pro air now because we don’t have the greatest booth in the world and it seems to do pretty decent for us. Anyone have any recommendations on a Sikkens clear that will perform without a bake booth and not the best airflow?
Thanks for the help
ChuckI also suffer with this problem, particularly with the ultra high solid clears we use, which are single coat.
As mentioned, it’s down to the extra depth of clear on the freshly painted/blended panel. To limit the effect I’ll try and remove as much original clear from the blend panel as I dare, so that by the time I’ve added an extra fresh coat of clear, the difference in total clear thickness is as small as possible. In extreme cases I won’t even put a full coat of clear right to the end, but reduce it down with fade out blender and just put a thin one over the last few inches.
i used to have this problem with dcu2042, clear darkening up the blend panels. the ppg rep told me to do like the others, first coat just past the base blend, and then finish off the whole door. then we strated getting cars comeing back and the jobber wouldn’t pay for the redo’s, claiming i didn’t put enough clear on the panels, duh, that’s what ya’ll told me. so we use dc3000 clear much cleaner.
some things i would check like if the clear you use has a slight yellow tone to it, and you should check the blend panel for previous repairs. i have a couple that were, and when we got done, the fender matched the back door but the middle on back of the front door was darker, due to previous repairs.
spray a wet bed prior on your blending panel, it will help. Also on your silver try reducing it more which i noticed helps a bit also. Check you have the exact variant, some people just spray no1 and just blend, use the right variant and it will help with blending.
He is not talking about having difficulties in blending silver,he is having trouble with the clear changing the color on his blend panel making it look a tad darker.Too much clear can cause this,or a clear with a slight yellow tinge to it.
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