Sanding Problem

oh thank for so much answer. haha now i realize it. u have to use a fine grit sand paper after you sand it with a rough want to give a smooth finish. so i am using a tamiya filing, i think it should nt have any problem . all i need to do is to juz used a fine grit sandpaper to sand it

I like using the polishing cloths which come in grits of 3200-12000 especially when I'm working on a plane with a natural metal finish.  Often times the area I'm sanding comes out more slick than the untouched surrounding areas!  But that's never caused bad results when applying the NMF.  Those polishing cloths are great.

 

Eric

The guys have it right, start out with coarse and work to fine on your sandpaper grades.  I've made the windows on aircraft flush (for some reason they always seem to be thicker than the fuselage surrounding them) by gluing them in, adding putty as necessary, filing with a fine flat needle file (take it down to just above the surrounding surface) and then working from 360 grit to 1800 grit sandpaper and then finishing it off with rubbing compound to polish everything to a high gloss - also works well if I'm going to do a NMF finish (which I will admit I will try to avoid if at all possible)

thevinman wrote:

Luis is right. You are missing some steps in your sanding technique. You should start out with a rough grit but you have to work your way down to a finer grit. I usually use 3 or 4 different kinds of sanding grits. It sounds like you are using files. Try sandpaper or sanding sticks. You should also check out your local bueaty shop or grocery store. Women use these sanding sticks for thier nails. They come in all different grits, and the concept is the same.

Yep i use the nail files or emry boards they have diffrent corseness from heavy to polishing i picked up 6 diffrent ones at wllgreens made by Kiss and no not the band. and they work great less combersome than those sheets from tester.

Nothing wrong with using files, *IF* you use the right files. My most used file is a 10" plastic laminate file and it will leave a paint ready surface on plastic or resin. That said, stepping through grits with sandpaper or sanding sticks  is the best bet for a good finish. Personally I usually stop at 400 for flat final finishes.

Luis is right. You are missing some steps in your sanding technique. You should start out with a rough grit but you have to work your way down to a finer grit. I usually use 3 or 4 different kinds of sanding grits.

It sounds like you are using files. Try sandpaper or sanding sticks. You should also check out your local bueaty shop or grocery store. Women use these sanding sticks for thier nails. They come in all different grits, and the concept is the same.

you are using sandpaper that is too rough.. try using sandpaper from 800-1500 grit. this will smoothen out your problem..