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It’s amazing to read through these old magazines, and realizing just how much the internet has displaced them in such a short time, and the fact that before Google Books, just reading through these

EDM has been around since the 1700's. You think more written about a simple process. What found in pass was 40 to 50 volts DC was good and safe. I found data some machines use a high frequency to get

Interesting, the May 1950 issues is 314 pages - not a typo three hundred fourteen...

Correction: $60-$70 replacement part ralphie

I've not done any power tapping wit my mini-lathe, but I have with my mini-mill.? I remember once that I had a aluminum bushing holder on a John Deere walk-behind snow blower on my deck that was worn

Popular Mechanics has it’s full archive on Google Books free to read, and their indexes are pretty good: https://books.google.com/books/about/Popular_Mechanics.html?id=49gDAAAAMBAJ

Vid dropped this morning by Mr. Pete about Starrett being acquired. " ATHOL, MA, March 11, 2024 – The L.S. Starrett Company (“Starrett” or the “Company”) (NYSE: SCX) today announced that it

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I do most power on? all sizes of tapping . I have a drum switch for tapping on my mill for work. Dave

I have use a Dremel cutoff wheel but on small taps did work. *One way I used one time on a 2-56 in model airplane engine mount. A broken tap it work using a brass welding rod and grit . Took some time

Another thing that helps is using a short handled tap wrench, it's easier to limit torque. Roy

I found a site that at least shows a couple pages (p151-152) of the March 1968 Popular Science EDM article. In referring to the article this is stated:? "The technology is not new, back in

Lately I have just chucked the tap into my drill and ran it into the piece being tapped, usually steel. This is since I found these: YG-1 - F4403 F4 Series Vanadium Alloy HSS Spiral Flute Tap, Steam

There were several references to a "Popular Mechanics" magazine issue with am EDM DIY article even in YouTube comments.? One comment said 1963.? One said 1969.? One said 50's or 60's.? I spent a

I'm glad to hear about the nitric acid method, although it feels like a last resort. To prevent tap breakage, I only go forward until the next flute, then back a little to break the chip.?

I use this sometimes when power tapping for maybe a # 10 & up https://www.youtube.com/results?search_query=tapping+with+a+whalstrom+chuck they work pretty good & their great if doing as bunch of

Actually power tapping is very easy. Just tighten the tap into the tail stock chuck Then back the tail stock hand wheel until the chuck releases. Then move the tail stock and chuck toward the

I read it about 40 years ago in the CC library in Colorado Springs! I am not even sure of the date! Try google say" DIY EDM Cheap" Bill

Tap guides are great and fairly easy and cheap to make with proper tools and equipment. I have plans to make one for myself out of 4140 which I can heat treat and make it more durable. *Have A Great

I some power tapping on my mini lathe and mini mill but I prefer hand tapping with tap being in proper alignment. I do not have a power tapping device and only power tap when I am confident that the