My principal hobby and career interest has been in electronics, but an early fascination with first VHF and UHF radio frequency techniques and systems, which led to an interest in microwaves, and ultimately to millimeter wave technology, led to the need for machine tools.  I bought a Craftsman drill press in 1958, an Atlas 10D lathe in 1960, and a Clausing 8520 vertical milling machine in 1963, and have used these tools and others regularly since.  A recent project has been construction of a mini-EDM (Electro-discharge-machine) with the plan to use it to cut rectangular holes in brass waveguide flanges -- a step normally done commercially by broaching.  This machine is now working, but there are so many electrical variables, and choices of dielectric fluids, it looks like it is going to require some time to optimize performance.

I’m licensed as a radio amateur as KG6OJI with my main interest being bench-top experimentation.  My home is in the U.S., just north of San Francisco, California and the Golden Gate bridge.

While I have always gone by my middle name of Bruce, my full name is Edwin Bruce Hunter.  This is why you may see ebrucehunter on my postings.

Manual for Starrett 2700-Series Digital Indicators -- Somewhat Off-Topic Thanks for the suggestion Mike; I have emailed Starrett at their Customer Service address. Bruce, KG6OJI Від ebrucehunter · #99838 ·

Manual for Starrett 2700-Series Digital Indicators -- Somewhat Off-Topic Many thanks to Animal and Roy. I searched the online Starrett site, but did not find the 2700 manual download listing. Although my particular 2740-1 version has been discontinued, information in the m Від ebrucehunter · #99836 ·

Manual for Starrett 2700-Series Digital Indicators -- Somewhat Off-Topic Does anyone on the list happen to have a manual for the Starrett 2700-series digital indicators? I have a 2740-1, 2-inch indicator, but am uncertain how to access some of its features. As I do not bel Від ebrucehunter · #99833 ·

New to group; DIY EDM Sinker...is Water OK for DIelectric? Martin, I have experimented with both distilled and tap water as a dielectric fluid in a mini-edm machine. While water works, the tool wear rate has been excessive. I have been hoping to obtain some n Від ebrucehunter · #99831 ·

Усі повідомлення