tapping

I put together a Google Sheets spreadsheet to automate Tapmatic's tapping recommended speeds & feeds, RPM adjustment factors, minimum required torque & horsepower, etc. The spreadsheet is here: https://docs.google.com/spreadsheets/d/16MPFCAvBzhTM1Sc9MnQwcvhcceaTQ26m7MhIoyBVxJk/edit?usp=sharing...

I have a Sherline lathe, but I recently ordered some accessories from Taig. I wanted their ER-16 collet adapter(1045ER), and to make shipping "worth it" I ordered their fly cutter(1224) and faceplate angle brackets(1036) just for fun. This is about the t-nuts that came with the faceplate angle...

As the title states, I've been very careful when tapping and have never broken a tap before today. I was threading a 1/2" piece of 1018 steel with a 1/4-20 spiral point tap. I used a guide to keep alignment and prevent breakage. I was only 2-3 threads in and snap! I was able to get out the...

My 3/8 round bar showed up last week, so this weekend's project was a tap follower. Starting stock was 3/4 and 3/8 1144 Stressproof bar. First, I turned the #2 Morse taper. It took a couple tries, but I eventually got a fit that I was happy with. Fortunately, tweaking the taper doesn't mean...

Bought this new Tap Handle and, IMO, made it even better with a Hack to add a bearing to the centering post it has built in. Makes tapping on the lathe great because it now spins and pulls the tailstock. In the video I make a couple of mini screw jacks to test the tap before and after the hack...

As you can all see, I'm making a tool plate to help hold parts while CNC milling. I drilled a 1" grid of holes that need to be tapped 1/4"-20. All 58 of them. I did two by hand and decided I need to power tap. Can a PM25 mill do power tapping? I know there are tapping heads, but they are $$$ and...

Hello all, I am having some trouble finding the right combo for tapping 3/4" blind holes into mild steel. I have a pneumatic tapping machine. My main tap size is 8-32, and it seems everyone recommends a #29 drill, however I'm getting stuck a lot, breaking taps, and overall seems like it's a...

I don't have a copy of Machinery's Handbook, and given how much even a used one costs here in Canada (if you can find one), I won't be buying one, so please don't suggest I get a copy in answer to this question. Please! I'm trying to use a TR10x2 button die. It's a metric version of an acme...