nollock Posted October 10, 2004 Report Share Posted October 10, 2004 whats the best sandpaper out of this lot... sand paper and what grits do I need to get? Would 60,120,240,500 grits do? Or do i need the inbetween ones aswell? cheers, chris Quote Link to comment Share on other sites More sharing options...
samoht Posted October 10, 2004 Report Share Posted October 10, 2004 all i've ever needed in guitar building.. 60, 100, 240, 400, 600, 800, 1000, 1500 and 2000. Quote Link to comment Share on other sites More sharing options...
AlGeeEater Posted October 10, 2004 Report Share Posted October 10, 2004 (edited) those grits are right but they should be wet&dry sheets. http://www.axminster.co.uk/product.asp?pf_id=19877&recno=15 ...just get a couple sheets of the grits on that page. Edited October 10, 2004 by AlGeeEater Quote Link to comment Share on other sites More sharing options...
nollock Posted October 10, 2004 Author Report Share Posted October 10, 2004 I take it you use that stuff for sanding the wood & the finish? chris Quote Link to comment Share on other sites More sharing options...
AlGeeEater Posted October 11, 2004 Report Share Posted October 11, 2004 Yup. Sand the wood nice and flat before shes finished, sand the color coat dry, then sand the last clear coat with wet....Simple as pie Quote Link to comment Share on other sites More sharing options...
LGM Guitars Posted October 11, 2004 Report Share Posted October 11, 2004 Yup. Sand the wood nice and flat before shes finished, sand the color coat dry, then sand the last clear coat with wet....Simple as pie you're nuts, sand the color coat???? why would you sand a color coat unless you screwed up spraying it??? You should NEVER sand any color coat unless you have the intention of respraying the color coat. Also, wet dry paper isn't as nice for sanding wood as the aluminum oxide paper (red backed dry paper). It loads up much faster. Wet dry paper should be used for sanding clear coats only, and for clear I use 600 through 2000, however, your very last coat of clear should not need to be sanded with anything more than 2000. Quote Link to comment Share on other sites More sharing options...
AlGeeEater Posted October 17, 2004 Report Share Posted October 17, 2004 (edited) Why shouldnt the color coat be sanded? Wet sand the color coat with 2000 grit then spray the clear and wet sand that to 2000 then buff...thats what i do? I dont see the problem here? Must read more painting article things i guess.... And your not the only one that thinks im nuts Edited October 17, 2004 by AlGeeEater Quote Link to comment Share on other sites More sharing options...
LGM Guitars Posted October 17, 2004 Report Share Posted October 17, 2004 Sanding anything with 2000 and then recoating is a poor idea, the surface becomes to smooth and adhesion can be a problem. Sanding color coats is un-neccessary and with some colors extremely detrimental to the color used. Specifically pearls or metallics. Quote Link to comment Share on other sites More sharing options...
AlGeeEater Posted October 17, 2004 Report Share Posted October 17, 2004 2000 will cause adhesion problems? How come this was never a problem with me? Quote Link to comment Share on other sites More sharing options...
LGM Guitars Posted October 18, 2004 Report Share Posted October 18, 2004 If you're spraying laquers they melt into each other, but if you are spraying urethanes, enamels, etc, if you have to mask over it, paint will probably lift, if you chip it the paint is much more likely to flake, and over time it can cause hazing, some effects might not be immediate, but will happen over time. I've been painting a long time, you can sand your color coats if you want, but I have never had a clear adhesion or color adhesion problem. Quote Link to comment Share on other sites More sharing options...
AlGeeEater Posted October 18, 2004 Report Share Posted October 18, 2004 Yea thats the reason, i spray lacquers. Ive never sprayed poly or enamls or anything like that. Quote Link to comment Share on other sites More sharing options...
LGM Guitars Posted October 18, 2004 Report Share Posted October 18, 2004 you're lucky you have had any success sanding the color coat then to be honest, it's just wasted time, especially with laquers since they do melt into each other, doesn't matter how smooth the last coat was, when they melt together, they all end up with the same texture. Quote Link to comment Share on other sites More sharing options...
AlGeeEater Posted October 18, 2004 Report Share Posted October 18, 2004 Wow i didnt even know that, maybe this new guitar i started it will save time. Thanks! Quote Link to comment Share on other sites More sharing options...
Devon Headen Posted October 19, 2004 Report Share Posted October 19, 2004 Why do people tell you to sand any coats other than the last one, then? Quote Link to comment Share on other sites More sharing options...
LGM Guitars Posted October 19, 2004 Report Share Posted October 19, 2004 Why do people tell you to sand any coats other than the last one, then? When spraying laquers the only reason to sand between coats really is if you have a really bad coat, with runs or something. The paint will melt together but it won't smooth out a run. When using 2 part paints, or even paints that cure hard withint 24 or 48 hours, you sand for a few reasons. 1. If there are imperfections in the previous coat they will only become enhanced with more coats. 2. When the paint can't melt into itself like laquers can, they need some "tooth" to adhere to each other, sanding with 600 grit will give it some tooth to bite into. Quote Link to comment Share on other sites More sharing options...
AlGeeEater Posted October 22, 2004 Report Share Posted October 22, 2004 (edited) Ok ive got a Q. Im spraying my friends strat a yellow(Acrylic Enamel) and black(enamel). I also bought 4 cans of clear(acrylic lacquer) Would i have compadbility problems? Oh ya, its all Dupli-Color cans.... Edited October 22, 2004 by AlGeeEater Quote Link to comment Share on other sites More sharing options...
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