People often count one too many threads when holding them up to a ruler. There’s a bit of a knack to it.
On v-threads it’s usually described as counting crest to crest. For acme threads I’d use one of the corners. If it’s ten tpi then the one inch mark should just touch the same corner on the...
My mill sits on these, but my floor is flat and close to level.
Vibration Damping Pads, 4" Long x 4" Wide x 1/4" Thick
https://www.mcmaster.com/5713K9
I suppose you could put down some steel pads and then set the pads and mill on those to clear the hump.
Yes, I meant the Green silicon carbide wheels. They can be treated nearly the same as aluminum oxide wheels, the dresser only needs to overcome the adhesive bond, not the silicon carbide. I use one of those t shaped things with the diamond grit on the end.
Looks like a square or acme thread. Even a ruler should get you close enough to identify the thread, then work from there. 2-3/4” 4tpi doesn’t seem to be a standard acme thread, so you may be looking at making a new back plate.
Liver of sulfur is the traditional darkener for copper, its alloys, and silver.
Usually comes in lumps, dissolve in warm water, brush on, wipe off repeat until desired color is achieved.
Use finer grits of wet/dry paper to hit the highlights. Use wet, it will be easy clean up in the sink.
Sailors traditionally had access to a material called “tow” in English which was the unraveled fibers of ropes. Probably in sacks from the chandler at the beginning of the voyage supplemented by unraveling old ropes over the course of the trip.
I have a Goodell-Pratt 125 which a tool rest, rather than the cross slide assembly.
Mr. Stretch has it about right. I’m afraid that learning machining on it will teach you more about using that specific lathe than machining in general.
Whichever lathe manual you get your hands on, you won’t...
I don’t use drill chucks on mine.
I have a chunk of 5/8” CRS that fits the sockets in mine. Only takes a few minutes to make a bushing if I need one. The bushings get a flat (rough and ready from the grinder) so they won’t spin in the socket and cross drilled & tapped for a set screw to hold...
This website or its third-party tools process personal data (e.g. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. To learn more, please refer to the cookie policy. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise.