So I seem to have a problem where I go to far with 80 grit, get it perfect, and then I can't sand anymore.
My bodyshop buddy says 2 part putty (or a similar facsimile) is made for that, and to do a skim coat, pushing it into the scratches, then sanding with 320-400 (Followed by epox and high build).
Makes sense to me, and I know the obvious choice would be.. stop sanding earlier.. But any insight?
evercoat metal glaze or the dophin glaze. best glazing putties out there, works perfect for that and is a standard procedure.
i use marson platinum filler, it spreads easy and i use it as a "galze coat" instead of the putty now. i finish everything to 180 before epoxy and priming. 320-400 is just extreme imo. give proper flash times and cure time and you arent going to see any difference. there are guys that prime over 80g scratches....thats a whole different debate...but is done with success...again with proper flash times and cure time of the primer.
I agree with the marson platinum and with the SPi primers the scratch issue is a non-issue..Try getting closer with the fill and use 100 grit for shaping as that may work a bit better for you..Get a roll of sticky back paper for your shaping blocks as well..
If you follow the following "Basics" there is absolutely no reason what so ever to "fix scratches" after you have finished shaping your filler work. There is absolutely no reason what so ever to have pin holes.
Here is a link to a "Basics of Basics" I wrote on the subject of filler and a method taught to me by a mentor of mine Emory Robinson back 30 years ago. "Basics of Basics" Plastic filler (click here)
I have watched guys go from working their butts off doing filler and redoing and fighting and getting it sent back from the paint shop do more, the paint shop fighting with them or needing to apply more primer.......... to doing their filler work in two applications to perfect with this method.
Thanks for the replies guys. Martin, isn't this what I'm talking about right now?
So, as it stands, I have a lot of the car almost perfect with 80 (Well, ok, Some of the car. haha). So I can take it down a bit with 180, and hopefully just get rid of the scratches,.
Or, give it to me in laymans terms (I AM using Marson Platinum by the way).. Can I take some putty or more filler, and just press it really hard into the scratches, and then lightly dust it with 180? Or am I going about this the wrong way?
Also, 180 is fine for the final body filler you say? I don't need to jump down to 320?? Because that would be fantastic. And I have 45 yards of 180 grit, and 0 yards of 320.
Is a skim coat what I'm talking about? or is a skim coat thicker than what I am talknig about. I'm talking about just pressing it into the scratches.
Nope, that is not what I am saying at all, read the "Basics" again.
The skim coat is much thicker, it is used for the final shaping. If you make it paper thin you will be cutting into the filler that you have already shaped to perfection and mess it up.
You want a very thin skim coat, but it is still "filling" imperfections and you are using IT to work with to bring the panel to perfection. You aren't ONLY using it to fill scratches.
Brian
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