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I'll share the example of the scroll teeth on the back of 3J chuck jaws. Understanding the details of math and what those teeth are accomplishing is a project all in itself (at least it was for me). Obviously one has to sort that out first - I don't see CNC as magic, you still have to know...

I made some comments in this earlier thread about purchasing / price of lathe chucks. https://canadianhobbymetalworkers.com/threads/8-inch-4-jaw-chuck-almost-brand-new-900-calgary-ab.11584/#post-160161 I was in the process of purchasing a couple 10” - 4J scroll chucks, rear mount. Now that...

Here is an interesting device, called a cathetometer - now a rather vintage piece of kit (I got it years ago when UofA had auctions of surplus odd and unusual items). Another design that is common (well common amongst items whigh are not very common) had additional vertical supports.

I’ve had this chuck a long time, the gripping section is getting a bit uneven. The jaws were bell mouthed ~0.003” radially. After watching Robin’s video, I felt I could do that. As has been much discussed, the biggest challenge can be setting up the loading arrangement. There are a few...

Another thread on lathe parting tools. Over the years I have tried / used a few different parting tools and found the GTN style carbide insert works well for my use (with the clamp in block for a regular tool holder). The generic HSS blade and holder that is commonly included in a qctp set...

Some back ground. I've been machining off/on for a while. I bought my first lathe in '83. Other machines have come and gone (mostly come). Of the years career and life have been on interesting twists and turns, but really all has been good. I've kept that initial interest in fixing and making...

My latest project is resurrecting a small radial arm drill. It came to me as a few large pieces and several boxes of parts (motors off, drill gearing removed). Think - jigsaw puzzle. It is actually coming together pretty well. The transmission shaft that supports the sliding gear had a blown...

I thought I'd share a brief tour of a classic little European milling machine. The sales literature refers to this as a "die sinker". I understand one of the more common brands of this configuration is made by Deckel - but there are many similar looking brands. I don't believe they are...

I got started into machining in the early '80s. I thought it would be somewhat of a career thing, to compliment my other trade, but that isn't the way things went. I ended up with a whole lot more formal education, but have kept that first lathe and enjoyed machining as a hobby. At times it...