Alright...I froze my ass off today, but I got some important steps done.
After the graining is complete, and you are sure that you got it all, flip it over to Membrane it. This is alot like graining, but the membrane comes off really easy. 15 minutes of scraping or so, and thats about it.
Next. The alkali needs to be rinsed out of the hide, at this point the dermis is all tensed up and kind of rubbery. Once it is rinsed out, it will become very white , supple and stretchy. If you have a stream or creek, soak it in there for a day or so. We have a stream, but I worry about Coyotes, and my damn dog!. What I do is use the 30 gal. garbage can, and rinse in that, leave the hose on a bit to slowly replenish the water in the container. The hide will ajust itself to the same PH as the water that it is in. You can speed up the process by putting a cup or so of apple cider vinegar in with the rinse, this slight acid helps pull the alkali out of the hide. What you want is neutral to slighly acidic when you are finished with the rinse. You will know when it is done, it is very supple and flowing, and really white. Right before you start the dressing step (eggs, brains, soap), give it one last rinse in 10 gal or so of water, and a half a cup of vinegar. This will make sure that you are slightly on the acidic side, which will help the dressing penetrate.
After that, we have to get most of the water back out of the hide, the dressing will not displace water, so we have to get it out, so the eggs can go in. This is the ringing step. drape the rear of the hide on a horizontal beam. Pull the neck end up and over(making a big tube). Roll in each end to the center, making sure all layers get wrapped up. Making a hide donut of sorts. This ia actually a dressed hide(that is why it is yellow) but good enough to get the point accross.
Insert stick and twist...Hard! Then back the other way, then unwind and rotate the "donut" around the beam and keep going. Get as much water out as possible. When you feel like you got alot of it out, put the hide back on the fleshing beam and squee-gee the rest of the water out of it with your scraper in the same way as as you grained and membraned. This will open up the hide, and help spread what water there is left in the hide around and get it closer to a even moisture content. (Remember EVEN moisture content, very important in the dressing and softening stages)
Now we are ready to dress.