The Home Machinist!

Already hardened metal items will obviously work, most of it will be some type of high carbon steel with unknown quality's. And yes high carbon steel was and still is used today and it was the only tool steel available for multiple century's. But it's now mostly used in home shops to come up with cu...

Depends on how your lathe is equipped for that best method. Ideally as Whateg0 said a proper taper turning attachment would be about the best method without the correct chambering reamer. Most TT attachments seem to have about + - 10 degrees per side for angle setting, and while I don't know the tap...

The slow speed diamond grinders Glenndo makes have accessories to re-grind inserts. https://accu-finish.com/ Other than the already honed and usually aluminum specific inserts most other inserts that I know of have the cutting edge in the same condition as the sintering and coating process leaves th...

If I'm reading your description properly your talking about the shaft that has the pinion gear on it right? With that shaft bent it try's to force the pinion teeth deeper into the rack teeth on the back side of the quill. Since the already low clearance between those two parts wont allow that to hap...

To my ears I like the Merlin better than the round engines, maybe it's the super charger that helps the sound. Either way I can only afford to listen to them though.

Awesome plane Glenn and I'm more than impressed. A low pass with a Merlin at full throttle has to be about the best sound in the world. That's even better than a NHRA nitro engine at full throttle in my opinion.

Ouch, that really is a bad day to find something like that. If it were me I think I'd repost the same thing with your pictures here. https://www.practicalmachinist.com/vb/antique-machinery-and-history/ The regulars there are more than knowledgeable and who knows you just might get lucky (maybe) with...

If you don't already know of this channel? https://www.youtube.com/user/todsstuff1 He does extensive research and there's quite a bit of cross bow information with a bit of digging through his past videos. Some interesting information as well about what these types of weapons were and were not capab...

I hope Ron doesn't mind some further OT information. In one of my T.D. Walshaw books (Simple Workshop Devices) he goes into a bit of detail about hand layouts, center punching, coordinate layouts and machining and an accuracy test that was performed at a technical collage in the UK I'm guessing arou...

First there's not enough information Ron. You need to quantify how "exact" that exact is. Different levels of +- accuracy dictate how it needs to be done. A big difference between a visually in line row of holes to run small bolts through @ + - .002", and better than .0002" to line two precision bor...

Hmmm, that link I added is faulty and it's now too late for an edit. For anyone interested enough just do a Google search for Practical Machinist Multi Fix and the thread will come up.

Even the pros on the Practical Machinist forum don't have much to say against the Chinese built Multi Fix clones. https://www.practicalmachinist.com/vb/g ... 851/Anyone with Forrest Addy's experience and him liking them is good enough for me.