The Secret Society of Lathe Trolls

Wow, really nice! Looks like a great summer project! Tell me, what did you use to strip the old paint? And to clean everything? It looks like you got years worth of grime off so easily - even the texturing in the knobs looks clean! I for one would be interested in hearing a bit more about your resto...

Just the leadscrew is damaged, so yes - that might absolutely be an option. I'm calling the lathe with the spiraling crank the M5S, although the badging is identical (Master Pro M5) to a non-crank M5. I got both types in a bulk lot, and it's baffling why any company would mark them identically when ...

Looking forward to it!

FYI that small gear is pretty much identical to a common gear used in RC car racing - 36 tooth, 48 pitch. You'd need to mill it out to fit, but at least the base cost is less than $10 for that type of gear. But the big gear, and the clutch mechanism is not going to be trivial. I don't doubt it's a b...

Thanks, guys. I was also thinking in the $300-400 range for this model, so that's reassuring. Petermontg - when you say you can get screws made for 100 Euro, is that just cutting the thread, or does it include the one-way gear the M5S uses for manual advance? I took one apart, and while the guts wer...

Hi, I got a damaged leadscrew delivered with a M5 purchase, and seller wants to make an insurance claim. It's 240 LPI (with the clutch mechanism) which I was told is rare - I honestly don't know. If there is a stable market for these items, could anyone estimate how much it would cost me to replace ...

Caught my eye because it was $10000 bucks, and really liked the story

http://www.ebay.com/itm/RECORDIO-DISC-circa-1940s-78-rpm-vinyl-record-aluminum-disc-Wilcox-Gay-picture/171770086833

Thanks for the tips! It's 120 LPI

Yep, I did some hoppin around and side pushing to make sure the playback stylus wasn't riding in the lands - I got a pretty bleepy/screechy version of the sound when it was out of the groove so I'm pretty sure it was riding ok. BUT... The groove is pretty wide, so I began wondering today if perhaps ...

1khz
Closeup

Here are some pics from a test cut. It is noisy, and I'm wondering if these striations are part of the cause. Material is polycarbonate at 110F, tungsten stylus at ~20 degree angle, 3oz weight, light oil, and about 1W in the presto. I am seeing roughly 4.3mil grooves with 0.71mil p-p displacement. I...

Cool, thanks guys. I need to get some of that drill rod! I had no time to mess with it tonight but I will give your suggestions a try tomorrow. Great to know you will be a source for the pins, PR. Setscrews as well? As you see my bobbins are shot, so I might be in the market for a misc parts tuneup ...

Picked up an old and rather fragile copy of this one, so it's best to scan it in before it turns to dust. Interesting note - my printer made it searchable, I had no idea it could do that! Well enjoy this oldie but goody.. And let me know if you find pages out of order or anything. Practical_Disc_Rec...

Thank you all for your replies and advice! I have also been speaking to Markrob and his comments are in line with your own - those clever tips and tricks from those "in the know". I am interested if there is any guidance on the B spring (straight middle one) that holds the armature to the knife edge...

Hi Folks, Got a 1-B, and I'm currently cleaning it up and getting the lay of the land. There is zero gap between the armature and the E-shaped laminated iron cores on either side, this can't be right - can it? Can anyone advise me on what gap I should be seeing between the E's and the armature? 100_...

Wow, I was doubtful but after reading up - yes, it seems that a whack or two in a weak magnetic field can help magnetize ferrous materials. Amazing! Personally, I think Bryan did it right: Place it with a field so high that the weaker magnetic material is saturated. Done and done, no whacking needed...

Looking forward to hearing about your upgrades! I'm waiting for some DC motors, but actually this project may go on the back burner for a while - I'm getting a presto! I will learn on that, and plus - it will give me a reference to what kind of performance I SHOULD be getting. Then I will be able to...

Love the video, but I'm a little dubious about their tapping. I suppose that if the coil could barely make enough field, some physical whacking might help the domains flop over.. But I thought that all you needed was to expose the material to a field greater than it's saturation limit, and poof - it...

Great idea that I plan to try soon! Bumping to get a link for later reference

Also looking for 1C or 1B manual. Ping me if one happened to have turned up, I'm not finding much anywhere.