I've been plugging away when time allows. I need to offset my 'personal' projects with the honey do's, or things get bad...lol.
I ended up having to toss the first two brackets I made. Long story short... I didn't have the wooden caps squared up correctly and the aluminum 'legs' that extend into the rails were well below the surface. May have been able to salvage them but not really worth the effort. On the upside it gave me more of an opprotunity to snap some pics of the setup I used to match the wooden cap miters.
Short version... Set up a dial so that it's fixed to the head of the mill, and then sweep back and forth along the cutting axis until the reading matches end to end.
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Looks like I'm off by a tenth or so of a thou. Close enough for this guy.... What this allows me to do is mill the shoulder's miter right up the wood. I hog out the bulk of the material and then creep up to the wood face. Near the end it's a thou or two at a time until I start brushing the wood face. Once I see some wood dust (think fine sand paper) I know I'm good.
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So we fast forward a bunch of days and we end up with 4 brackets ready to be installed and eventually shaped.
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Note the extra material along the edge of the rails. This is where I dropped the ball the last time around. Those sections were well below the rail face. I would have had to remove significant wood to flush them up. This time I erred heavily to the side of caution. It translates to extra time shaping the aluminum but it's better than back tracking to the beginning again.
Next task was to mount the bracket to the rails. I needed them installed so I could refit the wood caps. Step 1 was to mill out the unwanted material on the rails. The goal was to have the 0.200" 'legs' of the brackets sit flush with the bottom of the rails. This would also provide 0.400" of lift to the wood caps. Way more than I needed (0.3" max) but it wouldn't hurt and it would provide a more uniform look.
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I used a 1/4" palm router with a run of the mill bit. It's small enough that I didn't need to remove the rails to perform the work. This made life a tad easier.
With the pockets in the rails milled out. I marked off the best spot to use screws and returned to the mill. Followed the same process that I did for the wood cap screws, and installed.
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With the bracket installed, the wood caps needed to be refitted to the gap. The original fitting had the wood held in place with the matching miters. Now that the caps were going to be screwed to the bracket, their alignment was off. It took a bit of trial/error and I still need to re-address it somewhat.
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So back to the belt sander I went. It of course made relatively short work of the wood cap, and for kicks I thought I'd try it out on the aluminum.
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It did a decent enough job so I stuck with it. Had to take a break midway though. That aluminum really likes to hold on to it's heat...lol
Finally I got it down to nearly finished.
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I have that tiny gap between the cap and bracket to deal with. Although I highly doubt it would be noticeable once the wood had it's dark stain. ...and the aluminum has some strong sanding marks that need to be knocked down.
All in all, it's what I was hoping for, and I'm glad I opted to knock it down to 0.400" rather than the full 0.5". It should really pop when the finish is all done. 3 more to go and then on to the side pockets...
Thanks for watching