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Dragon's Designs Wraith Autococker Backblock Recreation
The only modification being to add a generous amount of extra 'meat' around the pump rod boss.
rod hole isn't fully tapped- it was run in from the opposite side, and the tap couldn't
reach all the way through. I'll tap it the rest of the way once the blanks are separated.)
With that scribe line, we then mill away the bulk of the material, sneaking up close to,
but not quite all the way to the line.
A little more profiling... Keep in mind there's no CNC here, this is freehand milling like an etch-a-sketch. :)
And a final bit, to clear out the pump boss gullets.
And there's our rough-but-close blanks.
The blanks are separated, deburred a bit, and then get a little smoothing on a simple 1x30" belt sander.
Don't knock 'em, these things are one of the handiest tools in the shop.
(Although they need a little modification. :) )
We'll be needing to start working on the contouring, so I need the bolt-pin holes. The Wraith
blackblock is not a standard size, so locating was a bit tricky.
Looks good so far.
Now, the blocks have a curved taper towards the bottom, so I use the original to
mark the blanks, set them up in the mill...
And cut away the bulk of the extra metal.
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