Re: ie
Lyn J. Mangiameli
>You asked me what is the binder.
I answered informing you it was tallow or petroleum based paraffin like compounds.
You seemed to already have your own understanding, and responded to my reply with "WAX"
Ganoskin (a major gem and jewelry resource) has a nice article on buffing compounds and here is their statement:
"The bonding material has little if any effect on the cutting or polishing action of the agents and it appears that all of them use similar binding materials. Stearic acid (animal fat acid), and paraffin wax (mineral grease) seem to be the predominate materials."
Tallow of course being animal fat and the paraffin being of course petroleum based as I said. These are components to oils, greases and waxes, all of which are used as binders for buffing compounds. Most of those bars you are familiar with actually are a combination of waxes and greases, with those having higher grease content usually allowing better application to the wheels.
Irrespective of your preferences, turners can use the buffing compounds with either raw or finished wood. Jerry Beall generally suggests applying an oil finish (Tung, PTO, or BLO) or oil/varnish combos, prior to buffing, but one is not limited to these finishes, or even using no finish at all. As with any finish or lack of finish, there are many tradeoffs. Turners select the finish that most matches their desired level of protection and most appreciated aesthetic qualities. Lots of turners have used the Beall system on raw wood and liked the result, particularly on dense oily woods like cocobolo. Others use it to "finish a finish." You may have your preferences, others have theirs.
The abrasives in the compounds are just that, abrasives. Tripoli is basically a finely ground rock, White Diamond is usually tin or aluminum oxide. They do what any other abrasive does, scratch the surface to which they are applied. Just as sand paper does, and just as other polishing compounds do. Buffing is just an easy way to achieve this scratching efficiently. My article contains a section describing why Russ feels another approach is often preferable, and so folks can gain an understanding of what buffing can do and what is at least one alternative.
You mention you like Meguiar's finishing compounds. Actually I use these all the time on motor vehicles. So what are they composed of, Petroleum distillates, glycerin and diatomaceous earth or silica (basically quartz dust) or aluminum oxide for abrasives. Not remarkably different components than those found in many buffing compounds.
Jerry Beall and others (such as Wood n' Things in the US and Chris Stotts in the UK) put a package together and offer an approach to finishing wood products. Again, many have been extremely pleased with the results. Jerry introduced the general community of woodworkers to the products and procedure; he (and now others) also conveniently packaged the products together so that turners didn't have to chase down the individual components and question if they purchased the optimal combination. I don't begrudge him for the profit he makes for his efforts, and appreciate that a tidy package is put together. He also has manufactured a means to conveniently mount the products on a lathe. Now other folks can choose to track down or make up these things for themselves, all made easier because Jerry has already demonstrated an effective combination.
There are lots of roads to a desirable finish, and indeed there is lots of room for individual preferences in what is a desirable finish. I am happy you have found yours and have chosen to share it with others, but I don't see why at the same time you feel the need to disparage another approach.