Top photo shows mock-up after sanding brass on a belt sander with #260 grit. As feared it's a little small, but I can still make the back of the knife correct. The front bolsters came out pretty well off the roller, but I can't get into the finger groove to sand. Will try manually. I'm pretty pleased, except for the bottom issues. The lesson is, don't cut any corners. If something almost works, don't use it, but I'm disregarding it in this case, so that if I'm wrong I get to kick myself twice. Besides, until I glue it, I can pretty easily disassemble and start over. On the other hand. that was a lot of work. On the other, other hand, I could use the practice.
Saturday, November 1, 2008
After Sanding
Top photo shows mock-up after sanding brass on a belt sander with #260 grit. As feared it's a little small, but I can still make the back of the knife correct. The front bolsters came out pretty well off the roller, but I can't get into the finger groove to sand. Will try manually. I'm pretty pleased, except for the bottom issues. The lesson is, don't cut any corners. If something almost works, don't use it, but I'm disregarding it in this case, so that if I'm wrong I get to kick myself twice. Besides, until I glue it, I can pretty easily disassemble and start over. On the other hand. that was a lot of work. On the other, other hand, I could use the practice.
After Fine Grinding
Blade with Slabs in Place
This was the first mock-up to check if it would work at all. The brass doesn't quite reach on the bottom, but I'm putting wood over that and hoping it will look okay with epoxy in the gap, which will be a flaw, but maybe not too bad, I'm going to concentrate on making the the top, front and rear correct and leave all the ugly underneath. I already nicked the steel there, before I realized if I didn't want to scratch the damascus I need to dissasemle, reassemble, and check repeatly. It turned out to be around twenty times. Radii are difficult on a grinder.
Blade #1, day 2
This is the two sides pinned together with 1/8" drill bits. This keeps them aligned while I drill out the three larger holes, two of which will be used to clamp them together for rough grinding. The two on the left will be removed and the one on the right is a slight problem. To use those I need to drill through the blank, and it turns out that damascus is as hard as it's supposed to be. My first two exploratory borings with a 1/8" bit left an almost unperceptible dimple. Not good. I made the mistake of trying to drill about a 1/2" hole in a piece of stainless and literally trashed every small bit I had, The larger holes are punched in the blank, I may be able to drill it and pin it w/ brass if I buy a couple of expensive bits. If not, I think it will strong enough with pins, rivits and glue.
Friday, October 31, 2008
Bowie - Spit and Polish
Actually wd-40 and 1000 grit paper. This was just to remove any surface rust or dirt, which was negligible, and bring out the contrast. I coated it lightly with gun grease, because I couldn't find any hard wax. I don't know if these photos are much good - just trying to show off the grain really. Tomorrow I polish whichever blank I'm going to use and grind the scales to roughly match the handle, but now I'm thinking I might not grind the excess off the thick part of the slabs on the front to make a thumb guard. If I just partially temporarily pin it together, I should be able to tell if it will work looks-wise or whether the open gaps will look bogus. Improvising...
Inside View of Scales
This shows the other side. Hopefully you can see where I have to remove brass to match the blank. There are a couple places where the finger notches don't quite reach, that might or might not cause appearance problems later. I try to move the scales around where the existing holes will line up. I want two pairs pins through the thick and thin parts, with a wood insert. My aim is for it to be strong without epoxy, as they would have for thousands of years before epoxy was invented, although I am going to glue it, too.
I don't know which blank I'm going to use yet, although if I had another pair of slabs I'd use them on both. They don't quite fit either, but I think they'll work. It's most likely that I will destroy them with the grinder, but I'm going to try and at least start carefully. For a change.
Day One, Fitting Slabs
I had this pair of scales from a grab bag of parts. I want to use these because I don't want to try soldering bolsters on. I'm pretty sure I'd mess it up; that the solder would wick into the little channels in the damascus. Maybe after I get a piece of scrap and practice. I know I am sloppy soldering wire and pipe, and I do know that silver solder is quite hard to remove, and that the area where the blade meets the handle is difficult to work around.
I'm polishing the bowie blade with wd40 and 1000 grit paper. I'm only trying to sharpen the contrast, not polish it as such. There are no scratches or gouges, and just a hint of grinder bite in the inside corners. Charlton claims the blades are hand-forged, but I would be impressed even if they weren"t. I was surprised that they came sharpened, but if you look real close you can still see veins of damasc in the edge, making hundreds of little hard saw-teeth. This indicates that the forging greatly increases the number and fineness of of veins at the edge. I don't care if they were made in Wungulistan they got them some hammer-swingers there, even if it's machine hammer.
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