(1.7.10) Help with modeling with tabula and rendering a fluid tank

[Pennyw95]

What I'm trying to do is to model a block capable of holding a fluid and to render the fluid level, akin to the openblocks tank. But, since I only want the front face to show the fluid, I opened Tabula and came up with this:

6 one pixel wide faces surrounding an internal 14x14x14 cube, that will display the fluid. And here comes the problems:

 

1) As you may see from the image, all the 6 faces of the model overlap each other around the borders. This of course can be avoided with measuring them accurately, but by doing that texturing becomes quite more challenging. So, I had the idea of having them overlap and then remove from the texture map all the little borders' textures. My concern is that, in Tabula, they still flicker around those borders. If I do all the rendering in the TESR will this problem persist?

 

 

 

2)Also, I looked for some tutorials and into OpenBlocks and BuildCraft source codes but I can't understand how the fluid level rendering works...I get that it's partial texture rendering based on the TE data but if anyone could give me a little help, I would really appreciate that..

 

 

Thanks in advance