guidecoating your clear

B

Bob Hollinshead

Awhile back there were some good discussions on blocking clear for that perfectly flat finish and the topic of guidecoating came up... if I remember right a person posted a paint or a link to a tint or paint they use in water to spray for guidecoat use during the color sanding process. Anybody remember this or know what the product was?
 
Years ago I saw an old guy use a contrasting color in a spray can. Mist it on like a primer guide coat. Car was black he used spray can white acrylic. (Krylon I think) He swore by it. Said he'd been doing it since the 60"s. He wasn't a hack so it must have worked well for him. I've never tried it Bob so that's the extent of my knowledge on it.
 
Never done it either , but pretty much what Chris just said using a light mist only of a contrasting color just to see that you're sanding it all off. I think a fast drying lacquer (touch up paint) would be as good as any & less likely to clog paper.
 
Any feedback on liquid yet? Read entire old carbon black thread (im in dr office) & thinking it works like a gem.
I spent past 2 days blocking fresh uvc & love point made about guide coat helping to avoid going over what's low.
 
I tried the waterbased tint in water and tried spraying it on-didn't work well at all that way LOL. I now see the original poster of that product uses it by spreading it on so I'll try mixing some with water and applying it with a rag or sponge. It does appear to be a very concentrated tint though. $40 for black and white with shipping.
 
I use sharpies for spot sanding minor blemishes in the clear I find after the majority is sanded and/or polished. Also for outlining runs prior to nib file and sanding. Works excellent! For the initial blocking of clear I use the gloss to dull visual as the initial indicator of when to stop the first sanding pass w/P400 grit dry then follow up with black dry coat powder for additional sanding up to 15oo/2000 grit wet then finish with 3000 & 5000 damp just by visual.

Mike
 
Smearing the tint/water on with a rag didn't work very well-not impressed. I've used sharpies before-often marked dirt nibs with them when I worked on collision repairs. They work fine on the right colors.
 
Well, we don't know till we try. Sharpies look like a winner.
I ordered a container of food grade charcoal & another of graphite. Will try when i do my other car.
Figure charcoal if nothing else i'll try for teeth whitening lol.
 
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