Starting with pencil and paper, Don will sketch out various designs with proper proportion. After which he transfered the sketches to the CAD (Computer Aided Drawing). From the CAD, visualization is easier and more accurate.
After that he proceeded to workout the movement.
A few of Don's computer renderings of his new creation ...
After completing the design and compiled the Bill of Materials (BOM), he proceeded to purchase materials.
Once the materials were in his atelier, fabrication began....
Fabrication
It starts with just two stress released brass blanks for the plate and bridges.
Those blanks get riddled with holes, a total of 101 holes in 19 different diameters.
Some of those holes are then threaded...
Then a little lathe work to remove the excess metal...
It is like making a sculpture, hammer and chisel, just remove the material that doesn’t belong to
David and leave the wanted.
Preparation of the steady pins ....
To keep everything in its proper place, steady pins are pressed fitted into the designated holes...
The bridges (up till now were in a single piece of material) were cut into individual pieces.
After fitting the jewels, the train wheels were first mounted.
Next is to fabricate the anchor bridge, drilled all the holes and milled the top side.
After milling the bottom side, turning out the part.
The anchor bridge.
Here you can just see the anchor bridge jeweled and mounted under the balance wheel.
Drilling the stem hole...
Before we can mount the winding train we need to make the wheel studs. Above is turning the stud
from a brass rod…
drilling the screw holes…
and making the countersinks to finish the stud.
Now the studs are mounted. Only the ratchet wheel is to be added.
On the dial side the keyless works has been made and assembled ...
the motion works held in place with the cover.
Now that the movement is fully assembled and works, the next step is decoration.
Before the decoration process, the components were disassembled....
All the steel parts that have been pressed into the plate, such as the axles were removed
otherwise they will be destroyed during the process of plating...
The bare plate and bridges.
Источник:
http://home.watchprosite.com/show-fo...ti-499886/s-0/
