- Joined
- Mar 25, 2013
- Messages
- 4,619
I made a back of the napkin drawing and started to remove material to make the hollow housing:
It is painful drawing in Imperial when my mill is Metric. I have made errors this way. Not as bad as the Hubble Telescope mirror debacle....
Also ordered some aluminum tubing and a longer end mill. Next step is to remove material on the lathe. Then finish machining the pocket out to final dimensions. Then I will go back to the lathe and machine and thread holes for the optics.
The threads on the objective are likely metric. I have never cut metric threads but I understand you cannot disengage the lead screw.
Also, somehow I got poison ivy in January. Pretty sure my dog was playing in it in the snow....
Robert
Edit: oops sorry that was the NASA Mars Orbiter that was lost due to a unit conversion error.
http://edition.cnn.com/TECH/space/9909/30/mars.metric.02/
It is painful drawing in Imperial when my mill is Metric. I have made errors this way. Not as bad as the Hubble Telescope mirror debacle....
Also ordered some aluminum tubing and a longer end mill. Next step is to remove material on the lathe. Then finish machining the pocket out to final dimensions. Then I will go back to the lathe and machine and thread holes for the optics.
The threads on the objective are likely metric. I have never cut metric threads but I understand you cannot disengage the lead screw.
Also, somehow I got poison ivy in January. Pretty sure my dog was playing in it in the snow....
Robert
Edit: oops sorry that was the NASA Mars Orbiter that was lost due to a unit conversion error.
http://edition.cnn.com/TECH/space/9909/30/mars.metric.02/
Last edited: