Please can somebody advice me, what I am doing wrong? In preview everything looks fine, then when I download the ttf, there is nothing useful in there.

When I open it in windows it looks like this

@Elmoyenique No, thanks for pointing it out, it was a mistake, I was just trying to redo the font second time from scratch, thought it was glitched by brick swapping, but it must be something else, maybe really one of the 4 types of bricks I used, I will try to omit the one I made composite first.

It seems the two default hole bricks were causing this trouble. I replaced them with composites. Shame is, I cant set the composites to same size ratio as those in the original pallete and I believe they also make the resulting file unnecessary big.

@Rob Meek. Yes, I tried and result was better in sense, that the font was not seemingly empty, but the lines height and character width did not work right.