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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

I'm sorta amazed how many youtube videos show guys tapping under power. I know it's a bit of a must in a production setting, but I was always taught to tap by hand - ideally using some sort of guide

Most tapping is in drill press/mill or lathe. This how did my nut for cross slide

In my home hobby projects, I've usually only tapped holes in the range from 6-32? up to 1/4-20. The smaller 6-32 and 8-32 taps still make me nervous, even when tapping aluminum. Even when using a

Looks good to me. I will make a block when need. But I look the looks of that tool Dave

If ya don't drill & tap much that's where drill & tap guides come in handy . If ya have a drill press or access to one these a simple quick jobs . https://www.ebay.com/itm/150689770337 animal

You have never had to work with employees. Good luck not break taps Dave

The solution is to not break a tap. Always use a guide.

If alum takes 24 hours and nitric acid takes 10 minutes, you don't have to guess which one I'm using! A few minutes after my broken-off drill bit, I was back in my shop tapping the hole. Walmart has

In my case the tap broke on the fifth hole. I was just thinking to myself that this is a cheap tap and I need to get a better set (these were the Pittsburgh brand from HF that I got probably 30 years

I am one of the ones that questioned what an EDM was as I had never heard of one. I did break a tap in my HF mini lathe when adding the 16" bed extension. Luckily(?), mine broke at the hole nearest

At time I would tap thousands a day sooner or later it would happen. Since they where large type I could get broken tap with mig welder. But most do not have skill . So you may need toremoving a tap

I tap on my mini lathe all the time, the trick is to keep the tap clear of chips by backing the tap out all the way, blow out the chips and use plenty of cutting fluid designed for the material that

I would suggest folks try to figure out how to not break taps. Since the 70s to now, I think I have broken two taps. Both in my earlier years. Granted I dont do alot everyday but still. george