David deLisle's Homebuilt Faceter..
This is the most elaborate homebuilt machine I have ever seen. If it were mine, I am not sure whether I would put it in the shop, or in an Art Museum. But it serves to illustrate what a homebuilder can accomplish.
An overview of the machine prior to the digital readout.
The arm with the two small Dial indicators is adjusted to get the correct
angle.
Then the handpiece is positioned on the height adjustable table so that the
two dial indicator tips contact a flat area on the handpiece ( Labeled A in
picture below )
Handpiece is then adjusted so that both small indicators read " Zero " .
The facet to be cut will now reflect the angle in the readout.
David writes:"I designed the machine some what after the Raytech
Shaw.
I like the hand piece concept. I use different hand pieces and did not want
to have a huge
degree angle setup and vernier on each handpiece.
So I wanted something that I could set, move into position and transfer
angle setting and then move out of the way.
The Spectrol is behind the round black disk ( facet1.jpg ) and the arm with
the indicators
moves through 90 deg.
Then I lift this setting device and store it above the DPM in picture.
Hence the black wire from Spectrol to the DPM.
Handpiece sits on a table that moves up and down with a thread and two
ex shock absorber shafts look after registration and stability.
The hand piece consists of the following. ( handp1.jpg and handp2.jpg )
It sits on the table with a tripod 3 point contact .
Front point " E " is removable for polishing.
" C " pivots and moves a small pin in and out of the teeth on the 96 index
gear " B " .
" D " moves left and right and is a Zero backlash cheater.
On the other pic " F " is a hand nut for adjusting the angle
and " A " is the flat pad that the tips of the Dial indicators touch for
angle transfer."
Write to David deLisle