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I've been practicing bevel setting on couple different razors so I've been going back and forth. I've spent a day on each of the troublesome razors and I haven't made much progress.. maybe just more frustration.I am a proponent of the burr method and I use it quite a lot. However, if you have been working at a razor for a while, I don't think you have a lot of steel left to remove. Where the burr method really shines is when there is a lot of heavy lifting to do. Regardless, concentrate on only one razor for now.
Do you have a very bright work light? You need a single point of overpoweringly bright light when you are first learning to read the bevel, so you get a bright, sharp reflection where there is something to reflect from. You also need a good loupe or a very strong magnifying glass. There is no better loupe than the Belomo 10x Triplet. For razors, it is ideal, because the loupe does not have to be close enough to accidentally contact the edge of the razor. You may also find that a cheap USB microscope can be useful. 100x is a good magnification level. The advantage of a USB microscope is you can share pics of your bevel. You should also have a sharpie marker for painting the bevel. Cover the bevel faces with ink, let it dry a minute, and take a couple of strokes on stone or film and see where the ink remains. Where it remains, you did not make contact with the hone.
When you roll the razor in the light, with your loupe you want to see a brignt line reflecting off the bevel face, quickly shift across the bevel and off the edge with no little sparkles of reflection at the edge, an invisible edge when it is turned fully up, and a resumption of the strong reflection flashing across the other side bevel.
Back to the sharpie test. A common issue is a thick heel or a thickening due to the edge wearing back until the stabilizer becomes a problem. This will manifest itself in an inability to make contact with the bevel NEAR the heel, with a normal honing stroke. The cure for this has been discussed on this and other forums quite a bit, and is to trim the heel and essentially eliminate that final tail end part of the edge along with the offending heel and stabilizer swell. The usual way is to use a quarter or nickel as a template to draw a curve with a sharpie. Take a coarse diamond plate like what you get from Harbor Freight, and work the heel down into the line you drew. Stand the razor up at about a 45 degree angle and use a sweeping motion. Those HF diamond plates are very cheap and while they are not very flat and are not of high quality, are excellent for this type of work. You can also use the side of a coarse hone but I prefer not to gouge up any surface of my stones. Myself, I often use a belt sander for this but I don't recommend that, your first time at bat.
Slurry raised from the stone while setting a bevel helps to speed up the process. However, it does place limits on how sharp the edge is, right off the bevel setter. Try rinsing the slurry off the stone when you think you got the bevel set, and then do some more laps under running water.
I know you have heard this over and over, but the bevel is not set until it is proven to be set. Prove it, by sight, by sharpie test, and by the usual sharpness tests. The biggest advantage of the burr method is that it provides its own proof, by the existence of a full length burr on each side in turn. However, I cannot stress enough the necessity of doing a thorough cleanup of the edge, once the burr has been raised on each side in turn. If you still have a burr, you don't have a good bevel. A good cleanup uses diminishing pressure so as not to simply maintain the burr and shift it side to side, making and breaking off little teeth and leaving gaps and chips. Pressure creates a burr, when the bevel face of one side crosses over the other. Honing with extremely light pressure can eventually remove the burr. For best pressure regulation, hone in hand. Don't rest the stone on a fixed surface. Don't brace your arm. Let the hand holding the hone and the hand holding the razor float out in space in front of you. For raising a burr, use heavy pressure. By heavy pressure, I mean the weight of your arm. Feel carefully for the burr. When it is evident along the entire edge, raise it on the other side, same way. I like to count the laps used for the first side, and then use the same number of laps for the other side, to keep the apex more or less centered. I also like to mix in some pull strokes when cleaning up a bevel. To do this, lay the razor on the hone but instead of stroking it the length of the hone, pull it directly sideways, as if dragging it off the side of the hone by the tang. Only pull it about 3/4" to 1". Flip and pull on the other side. This does a lot to clear the edge. You can maybe go 5 normal laps, then a pull stroke lap. Keep gradually reducing pressure as you grind that burr away. Finish with very short x strokes, using only maybe 3" or 4" of the hone, on a freshly rinsed stone, under running water. Once you really nail it, you should be able to shave your face with it. Not practically or enjoyably, but it should shave.
Concentrate on just one razor. I suspect you are skipping around too quickly and not putting in your time on just one until it is done.
How are you lapping your stones, and how often?
I've been able to set the bevel on couple more razors, couple Gold Dollars and couple American vintages. The difference seems to be that they are warp-free and take a more even edge.
I lap the stone using my Atoma 600. Lapping if I use a stone for more than 10-15 minutes and also at the end of my honing sessions.
I'm experimenting with adding more layers of tapes for the razors. That might help since I have a lot of spine wear and alter the angle of the bevel. I don't mind spine wear but if messes with setting the bevel, I might be more prone to using tape.
Narrow hone is another thing I want to mess around with but I only have a Soft/Hard Ark combo and a coticule for narrow hones. I'm going with my Shapton synthetics to practice so hard to work with that.