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Member postings for Mark Fraser

Here is a list of all the postings Mark Fraser has made in our forums. Click on a thread name to jump to the thread.

Thread: My skeleton clock
14/09/2011 18:22:53
I'd like to try my hand at the Stevens skeleton clock so beautifully done by Sam Stones. I don't have access to ME in that era, does anyone have back issues or ?? /thanks / mark in Canada
 
14/09/2011 18:22:47
I'd like to try my hand at the Stevens skeleton clock so beautifully done by Sam Stones. I don't have access to ME in that era, does anyone have back issues or ?? /thanks / mark in Canada
 
Thread: Electrical Discharge Machine - Spark Erroder...
11/06/2009 02:48:26
Be very cautious with this circuit - I believe that it connects directly to 
mains.... /mark in Canada

Thread: Cutting a gear wheel
22/05/2009 20:47:52
The trick will be the offset of points along non-orthogonal lines, or arcs.
You'll have to create another path one radius outside of the object's
outline.  Make sure the path goes in the desired direction - normal or
climb milling.  I'd guess that the spreadsheet would be better as you can
at least do math and geometrical calcs there, perhaps even trig.
On the other hand, there are lots of free cad programs around, and 
lots of .dfx to gcode (my fave is ace.convertor) freebies as well.  
But the excel exercise is good as a basic learning tool...
Sort of appropriate for MEs - spend more time making the tools
than the object to be created therewith <grin> /mark fraser

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