Peening with the SFX Anvils 08/09/2010
![]() This may be the ultimate, ultimate peening anvil. It's a new style of a narrow scythe anvil, designed by Ernst Schoiswohl for the Schroeckenfux Scythe Factory. It is now available in a tall model. It features an adjustable support platform that can now be mounted at two different levels, a guide for the edge of the blade, plus a precisely and expertly shaped normal radius on the anvil face. The anvil is made from extremely high quality steel, hardened to 58-60 Rockwell. It is available in both a short (10cm) and a tall (16cm) styles. Both styles now have a normal radius. ![]() The attachable guide plate and support platform make it easy to keep the edge in the correct position on the anvil face. These anvils makes it much easier for a beginner to get good results when freehand peening. Experienced peeners may remove the guide and support platform, but they will still greatly appreciate the exceptional hardness of the anvil and the expertly shaped radius. Amazing consistency is possible with this anvil. The Support Platform vs. Blade Width![]() The SFX anvil was originally designed with a support platform for use with the very narrow scythe blades sold by the Austrian Scythe Association, similar to the red one at the top of the picture here. So the support platform was designed to mount on the top hole that the guide plate now attaches to. The platform cannot go down far enough for wider blades from this position, however. For example, when peening our 50mm wide blades, the platform wouldn't go down far enough to peen the wider beard area correctly. The edge can not lay flush across the surface of the radius of the anvil, if the platform is too high. You do not get good contact this way. Since I personally prefer to use wider scythe blades, and I find the support platform to be the most useful when peening wider blades, I asked the manufacturer to customize the SFX anvils for 1SR with a second hole beneath the first one, so that our customers would have the option of mounting the platform at a lower setting. Short vs. Tall Anvils![]() Scythe anvils are categorized as narrow or wide, and short or tall. Short anvils are used on stumps that are either separate from your seat, or on a peening horse. Tall anvils are used on stumps or stones, big enough for you and the anvil to sit on. The advantage of this, is that mass of the larger stump, plus your own weight, create an extremely solid and stable base for the anvil. The stump will not wiggle, and the anvil will have a maximum draw.This makes peening much nicer. It makes consistency and accuracy, easier to achieve. Fine-Tuning the Guide Plate![]() The wings of the guide plate must be adjusted for the type of blade that you have, so that the edge of the blade is aligned correctly across the top of the radius of the anvil surface. I find this to be the easiest to do with a small adjustable crescent wrench. Just close it on the wings, and then with the blade on the anvil, pry the wrench forward or backward, until the blade is in the correct position. When you order a scythe and a SFX peening kit from me, I assemble the anvil for you, and adjust the guide-plate for your scythe blade, but you may still need to fine-tune it. I prefer to use the support platform as a finger rest, especially near the tip of the blade, where its width changes so quickly. It is much easier to adjust your fingers, than it is to constantly have to stop and spin the platform down. When peening the long mid-section of longer scythe blades (75-90cm), I switch to letting the rib of the blade lay directly on the platform, adjusting the platform as I go. Then when I get to the beard area, I spin the platform down even further, and switch to supporting the blade with my fingers again, while my fingers rest on the platform. Some peeners would rather dispense with the platform, but I find that it makes peening much more comfortable for my left wrist, when peening wider blades. The Diagonal Drawing Hammer StrikeMy Hammering Technique - By hammering at a diagonal, the blade is moved incrementally to the right with each hammer strike. I take advantage of this by starting at the tip of the blade, and working my way back to the beard, instead of the traditional beard-to-tip direction. This enables the blade to slide smoothly across the anvil face (if your edge is clean!), making it easier to peen an even line. In hot sweaty weather, I prefer to wear a glove on my left hand, so my hand doesn't stick to the platform, nor my fingers to the blade. Notice how smooth and evenly a line can be peened on the SFX anvil, with the guide plate, and good hammering technique and form. In HD you can see how the metal is smoothly drawn out by each strike. I prefer to gently draw out the edge with successive passes. Striking with more force will move more of the metal out quicker, but stretching the metal too dramatically can lead to tiny tears, or cracks. From the angle of this video, it's difficult to see how much metal is being moved. From my side of the blade however, it was quite noticeable (see photo below). About 0.5mm. In this close-up photo, you can see result of my progress from the above videos, on the first pass with Diagonal Drawing Hammer Strike. Notice how much metal is being moved, and how even it is. Consistent hammering, plus having both wings of the guide-plate properly adjusted, makes it easy to draw out the metal this evenly. Notice how I have the right wing adjusted more forward, to accommodate the amount of metal being drawn forward. The Compressing Hammer StrikeAfter several passes with the "Diagonal Strike" I finish the blade with one or two passes with the Compressing Hammer strike. To learn more about my peening method read, my peening manual that comes with our 1SR peening kits. CommentsSteve Leppold 08/09/2010 3:24pm
A tip I got from Alexander Vido: To minimize the dulling of the edge caused by the two "wings" of the edge guide, you can bend one of the wings (on the side the blade is exiting) so that it no longer makes contact with the blade. The result is not as foolproof, as the blade has more freedom to move, but the peened edge will no longer rub against metal. -- Steve Leppold
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Botan Anderson 08/09/2010 3:39pm
Thanks for the tip. I wouldn't recommend it for beginners though. They have a hard enough time keeping the edge in the correct position. If properly adjusted, having a guide on both sides really helps them. It could be good for more advanced peeners. I can't say that I notice much of a dulling effect though. Maybe if I hit harder with the hammer, I would. Anyway, it's nothing like the dulling effect of the center post of a peening jig.
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