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    Forging/Expanding Titanium

    Little side-job here, my brother recently scrapped out some old and worn Ti6Al4V ultrasonic transducer heads, and they ended up finding their way to me. I think it would be neat to make a tuba mouthpiece out of one, but it's just a bit too small at the rim. Thought it would be simple enough to...
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    Shaper Tooling

    Next step in getting the shaper going after lubrication: tooling. I got a small pile of old toolholders for a lantern toolpost with my lathe, but no lantern so I never used any of them. I also grabbed a handful of chunkier HSS blanks that I figure I can grind into cutters and hold directly...
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    Cincinnati Shaper Oil Tower Flowrate Question

    I'm (finally) working on getting my Cinci 16 HD shaper (which I've owned since April) into service. So far, I've scrubbed out the sump, the other sump, replaced the oil and now I'm looking to make sure oil is getting to all the important bits. As far as I can tell it isn't. The picture above...
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    Carbide Inserts Breaking Immediately

    I've been using TPG 322 inserts in a boring bar for the lathe for a little over a year now, and they've been solid and reliable for all that time. I don't do all that much machining, so in that time I only went through three inserts. When I went to replace the third one, I dropped the spacer...
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    Moisture, Movement, and Finishing

    I like to make fountain pens for myself, and I thought I'd branch out and make one from wood rather than metal as I have done in the past. This one also marks my first 100% self-made pen as well, the nib, feed, body, etc. all made by me. The main issue I had was with the body. I had adapted a...
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    Scope Rings - Any Pitfalls?

    I recently got a new deer gun - a .308 drilled and tapped for a scope mount. I got a deal on a scope and now have both bits in hand, this is my first gun that I'm putting a scope on so I figured I'd wait to have both ends before dealing with the middle. Now, I'm wondering if it's worth making...
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    Help Forming an Odd Internal Profile

    I have a project which requires making two bushings out of acetal plastic that have an odd internal profile cut into them. My first thought was to make a broach from 4140 prehard and jam it through, but the resulting hole was sloppy and the profile changed size through the process. The middle...
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    Identify Damage to Lathe Spindle

    Alright fellas, I need some help here. Yesterday, I crashed my lathe. I was running an interrupted cut up to a shoulder, went one rev too far, BAM, tool digs in, ejects my part, and manages to unscrew the toolpost. The handle whipped around, right into the chuck jaws. Explodes the knob on the...
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    Cutting taper with Tailstock

    I know that using the tailstock offset from center will cause a bar turned on the lathe to have some diametric taper equal to: (offsetx2)/(distance between centers) when it is turned. I also know that this is best done between centers. What I want to know is how much taper can be done like this...
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    Wire EDM Slot 30K Pieces SE Michigan

    I know a guy who could use a hand getting some parts done on a wire EDM machine. Not sure exactly what the part looks like, but it needs a 2mm wide slot cut about 16mm deep through a section about 12mm thick. Material is 441 stainless. Total volume is expected to be 30K pieces across two...
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    LeBlond Regal Feed Mismatch

    I have a 19" LeBlond Regal (1967 vintage) with a puzzling issue on the feeds. I was wondering why I kept favoring feeds much lower than what my brain tells me is appropriate and I decided to do some sleuthing. Set up a bar in the chuck and made a nice little spiral around it with the leadscrew...
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    Hardness and Surface Roughness Testers for Shafts

    Right now, we are looking at improving our ability to test parts, and a big part of that will be bringing production of test fixtures (shafts, press-in bores, etc.) in-house. Our customers provide the spec of their intended production shaft for size, roughness, and hardness. We would then be...
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    Setting up a Mill and Grinder

    Hello, all! I've been a lurker here for a while, but finally have something I think is worth asking about. I'm an engineer working in the seals and rubber parts business. We are currently in the beginning stages of setting up a testing and prototype shop to add capability and service to our...

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