Hey .... just got a call. My blade Etch Acid is now available from my supplier! Hey - this was a good choice to sit a few minutes.
Back to our story:
I had intended to use a simplier form of engraving in order to not have such an investment of time and effort. This method would be called "Line Cut". The way that you would create a sketch or a block print. You can do shading with many small lines or points (dots), but the image is flat. It's on the level of the bolster's surface. I don't do this much - I mostly do "Relief Carving" which removes the background, and leaves the subject in raised and rounded relief. It's a much more complex form. While we are holding our Webinar .... the only other main form of ingraving is "Intaglio." This is where the figures are cut into the base material, in the form of "dishing out" the material. A head then becomes a basic "bowl" in Intaglio engraving, where it's a "sphere" in Relief Carving, and it's a "Shaded Sketch" in "line cut" work.
Back to my fun. So: when burr was removed from my line cut work, the remaining lines were like finger prints to the eye. Here's the mechanical reason. I wasn't just too dumb to know how deep I was cutting. The pointed/bladed tool bit goes into s collet chuck that free spins at about 400,000 rpms. It screams. As the bit cuts the metal, it displaces the flakes it cuts off ..... IN A PERFECT WORLD....
In reality, it smears some of the metal aside. A crude analogy would be to drag a stick thru dirt. Your result is a groove/trench, WITH displaced dirt mounded up on each side of the entire groove. I'm engraving, we'd LOVE for the bits to cleanly shear off the waste material and have it blow away (unless you are engraving gold or platinum ... whoooh!). Now; this case is hard Alloy Aluminum, so it would be nice for the shavings and grinding to disappear. As I OBSERVED what I was cutting, the designs looked great. I knew the burr was there and adding to the width of the lines, but I knew I was cutting a good depth and the design would be almost as wide as I was seeing. Well, when I scuff sanded the burr ridges away, the design remained as the finest or fine razor cuts!!! That's not possible!!!! The burr was well engaged into the metal!!!..... ahhhhh ..... crap!!! The burr's rotation also MELTED the cut material.... which then fused back into place on each side wall of the cut! Nutz.
No; it wouldn't be s perfect weld that your trust your life to ... but it was pretty darned "welded" in those grooves and the line/groove left behind was absurdly narrow. WELL!!!! Isn't that a fine mess now. Good thing you felt so good about the work. And kept going and going - hour after hour. You say softly .... WHY DIDNT YOU BEBURR AND POLISH SOME!!!!????" Well, that would be the "One Hand" discussion we had. I was in the flow.
Ok. So now what? Now what??? Now I turn EACH one of the designs into EITHER a Relief Cut OR an Intaglio Cut. ALL of them. Or else .... I throw the whole thing away.
And so; I've been carving and engraving. It looks very good. It looks much better than I wanted it to. It looks like much more money than I will ask for it. It's going to be a very nice knife, and I'm really sick of working on it, especially knowing I'm doing again, what I already did ... and I'm hoping and praying that each section ends up lighting my dials up as well in Relief, or Intaglio - as they did in Line Cuts.
Gary