The Home Machinist!

Harold writes:
> Filing offers the opportunity for further damage, as file pinning, especially with aluminum or mild steel, is an ongoing problem.

"File pinning"?

You want to go to lathe.com, the Logan Web site.

Go to http://www.lathe.com/models.htm to identify your machine. https://store.lathe.com/pl-11.html seems to be parts list and instructions for the 925. Also try emailing Scot Logan.

I learned the hard way how bad Silver brazing can be. Wow! That can prove deadly! Cadmium is used to control oxidation of the copper in (some) silver solder. It is a known killer. Could you please provide some details of your experience? H The symptoms of acute[1] cadmium poisoning are respiratory,...

I put a small yellow dot sticker on my lathe chuck and then used a tachometer app on my Iphone to estimate the chuck speed. I'm not convinced that the results were all that accurate. I don't have a belt/speed chart for my lathe. Are there any good methods to figure out how fast your lathe is spinni...

I don't understand. It is a chord that I cut from a brake rotor, and I've milled half an inch into the top fins and around 100 thou into the bottom already. I feel as though I need to place it into a 500F oven for half a day and let it cool, and then lap it again on my surface plate. Milling it for...

ctwo wrote: ↑

Thu Sep 10, 2020 9:46 pm

...maybe I will just mill out the center 1/4 of the span.

I agree with Harold. Don't do that. Don't even drill it.

Some precision levels have a foot at each end rather than a continuous flat bottom. This eliminates the possibility of teetering. You can get the same effect by placing a gauge block under each end though of course that adds uncertainty.

Assume that the level is out of adjustment such that when placed on the mythical truly, totally level surface it would read one division off. That means that the actual zero position of that level in its out of adjustment state is one division away from the point on the scale marked "0". Thus when i...

I'm replacing the little Grizzly table on my Avey frankenmill with one from a Burgmaster machine (Does that make it an Aveymaster or a Burgavey?). 12" x 42" table, 24" X travel, 12" Y travel. 1.25" shaft ways with two 4" linear ball bearings on each. 1.125" 5 TPI acme screws with adjustable zero bac...

More photos:

I'm replacing the little Grizzly table on my Avey frankenmill with one off of a Burgmaster mill. Photos:

liveaboard writes: "The main problem was that those things were designed in the 50's." Sounds more like they were poorrly designed, in the 50's. No motorcycles, but most US made stuff I've used and/or repaired that was designed in the 50's was well designed. Even the cheap, flimsy stuff (mostly didn...