how to make a convex edge
The grain of highly figured woods, such as bird's-eye maple, can tear out quite easily, especially if your jointer knives aren't as sharp as they … Boards are made of poplar, 48” long, 8” wide, 1 1/4” thick in the center, 1/2” at each edge. So in these areas we need to clip little triangles out of the seam allowance to make more room. Lay the pad down and pretend it is a stone. Poll: How to improve the convex edge on a 3v knife Discussion in ' Maintenance, Tinkering & Embellishment ' started by maximus83 , Feb 10, 2021 at 1:15 PM . 5. You will notice creasing is forming in the convex fabric as you pin towards the edge. I’d make a convex “cutter” and place it into the top so that it extends past the corner. Sandpaper sheets on mouse pad will convex your edge in a few hours. Make the curve as smooth and even as you can. If you can get one good track, use a your router and a flush-trimming bit to produce a duplicate. Regardless of the edge, the main bevels should be the same, or nearly the same. I like to use thin long pins. When finishing and sharpening a convex edge by hand, a trick is to use a medium-hard rubber pad with the wet-or-dry paper over it. Hopefully I can get some good ideas. This is normal so don’t panic! You will most likely need to scale up before doing the intersect to avoid issues with small edges (search the forum for the “Dave method”). I am also not looking to use a cnc machine. Not sure how to describe it otherwise, but it would need an even rise from the edge to the center that would put the center about 1 1/2 inches higher. Do not attempt to straighten a convex edge on a jointer, even if the convex edge is bowed by less than 1 ⁄ 2".To straighten any convex edge, follow the method described in Step 4.. Stand the strip on edge and clamp one end to … Then do the intersect faces between it and the rest. I am looking for the best way/ fastest/ easiest to put a convex face on a board, that is uniform from edge to edge. For years, experienced knifemen have known that a "smaller bevel angle" would cut better, but is more fragile; while a "larger bevel angle" will … 6. With a convex edge, I think (and I may be dead wrong) that when you sharpen you take more material at the edge than you do up the shoulder, decreasingly as you go up. You will get a curved edge, instead of an angled edge. For a project I need a circle of wood about half an inch thick and 28 inches across that is slightly convex. I did a 4 inch folder in a short evening on 150 grit. From this center pin start moving to your left and pin the fabrics together every 1/4″. Repeat for the right side of the center pin. Hello, I am fairly new to wood working. On the convex areas of curve, the wider area of seam allowance will have to fit inside the smaller area on the other side of the seam once we flip the fabric, and it will end up bunched up. The Convex edge on a knife is an edge that is curved or sharpened with an arc. Ijtying out a smooth, even curve calls for a flexible strip of thin wood, metal, or, as here, acry lic, and a couple of hand screws. Instead of a fixed, flat bevel throughout, the convex edge angle gradually changes across the entire bevel. I am needing to make 150. Paid Subscribers don't see ads! So in one sharpening session with a convex edge, I would take off 1X amount of material at the edge and 0.5x material halfway up the blade. Once you have the edge profile you like, switch to 220, then higher if you want.
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