Big extraction:
First of all a bit of info:
There are two kinds of solvents, polar and nonpolar. Generally, the good stuff in HBW seeds is polar soluable, and the bad stuff is nonpolar soluable.
So the idea is to first make a nonpolar solution, which of course means that you take a nonpolar solvent and soak the ground up seeds in it. The result is a solution of garbage from the seeds and the nonpolar solvent. Petroleum is a nonpolar solvent, so it will function in this capacity.
1.) Soak the ground up seeds in petroleum ether for a few days
2.) Filter the resulting cloudy solution through some coffee filters
3.) Throw away the solution
4.) Keep the seed mush
The seed mush consists of nondisolved LSA's, fiber, and the remaining solution that didn't drip through the filter. This part can be iterated to get more and more garbage out of the mush. The final time, let the seed mush dry thoroughly so that the petroleum evaporates so that you don't have any poison in there.
After the seed mush dries, the nest stage is to make a polar solution, which separates the alkaloids (the LSA) from the fiber of the seeds. This is done with alcohol. The key is to have a polar solution which easily evaporates, one which will not destroy the LSA's, and one which is not poisonous; i.e. Ethanol alcohol (drinking). Methanol will also work, but methanol can causes blindness, so if you use methanol, make damn sure it's all evaporated before consuming the product.
5.) Make an alcohol solution of the seeds. i.e. put the seeds into the alcohol (as high proof as possible, I recomend everclear 190 proof).
6.) Filter the solution through filter paper, like before, except this time keep the liquid in a jar.
7.) Repeat step #6; 3 or 4 times, always keeping the liquid.
8.) When you've exhausted the seeds, throw them away (the seed mush)
9.) Put the liquid in a shallow flat tray, pan or large bowl, and let it evaporate in a dark dry place for a day or two, or until there is no liquid.
10.) The pan should have a yellowish scum residue. That's the LSA gunk
11.) Scrape that up with a razor blade or credit card or whatever works. It'll be sticky and gummy, and once it's all scraped up it will look dark brown.
Once you have this stuff as pure as you want it, you can ingest it in your favorite form. You can either swallow it as a lump, put it into a gelatin capsule, drink the ethanol solution, or dissolve it in some cool-aid. I recommend either capsules or swallow the lump if you can handle the taste.
I guess you could smoke it to--but I don't know if the flame/heat would kill off the lsa or not.
Other notes:
Petroleum ether is in Naptha (lighter fluid), which is available in hardware stores.
You can also buy ethyl ether
Make sure that nomater what you buy that it contains no benzene.
Well in reality benzene is in almost every cleaning/solvent out there--i.e. naptha e.t.c., but its not enough to cause problems.
So in summary/in a nutshell:
You mix the HWBR powder in a nonpolar solvent, keep the resultant gunk(I) and throw away the solution. Then dissolve the gunk(I) into a polar solvent, throw away the new gunk(II) and evaporate the solution. The final gunk (III) that comes out of the solution has LSA in it.
>
> gunk(I) = gunk(II) + gunk(III)
> gunk(III) is the good stuff
> gunk(II) is not
> gunk(I+III) are therefore kept
>
nonpolar solvent = petroleum ether (or zippo lighter fluid--i.e. Naptha)
polar solvent = alcohol (methanol is better, but is a smidgin poisinous
so you've got to be damn sure its all evaporated, I actually suggest to just use ethonol--becuase its always a safe bet-and will do the job great).
maar aangezien extractie van allerlei middelen meestal anders zijn end ie van bepaalde middelen ebhoorlijk makkelijk kunnen 
