Finishing instructions for my bass guitar kit.?

Never used their products. Pretty much use automotive paint. Anything designed to fill grain should be pretty thick right.? Ive built a good many kits, most were basswood. I used really thin dye and immediately coated with clear polyurethane. Basswood is fairly smooth. Even with very thick auto poly sprayed in thick coats, it takes a good amount of build. See my kit build "iced bongo #5" Its a basswood body kit. I dyed it, pounded 3 coats of clear. Sanded it back with 320 grit paper. Added some sparkly middle coats then sprayed 3 more coats of clear. Wet sanded and buffed it is flat smooth and nice and glossy. Not ssure what you bougt or will use but its gonna take a lot of coats to get smooth surfaces which buff up glossy. Ggod luck and sharre your results.

 

What you do is to apply the grain filler with a bondo paddle, let it dry, then sand it down with a sanding block. What they are talking about with the thinner, I assume, is that it takes 15 minutes for the solvents to flash off, but that is a really poor way of explaining it.

 

The ReRanch filler is an oil based filler that has a certain amount of reducer (thinner) added to keep it somewhat soluble in the can . Out of the can, it is very thick. It needs to be thinned to a workable consistency, similar to peanut butter. I use naptha to thin

I use an old credit card to apply, working it into the grain from all angles. You need to let it set up a few minutes to allow the solvent to flash off and the surface starts to haze over. Then use a scrapper to remove all the excess, across the grain. Once the excess is removed, I then wipe across grain with a piece of burlap wetted with naptha to smooth out somewhat. Let dry over night, then level sand. Repeat the process until the field is completely filled and level

Using an oil based filler, I suggest using a wash-coat of clear before applying filler. This wash-coat will keep the oils from staining the field of the wood. I do this process each time between coats of filler.

As with any finishing product, read the instructions on the label or known experiences of others. There are other grain filling mediums that are much easier to use than oil based version. JMHO & E