The Home Machinist!

I use only a single knurling tool, tool post mounted, plunge type. Harold Harold, Just curious, is that one single diamond pattern wheel, or are you saying that for a diamond pattern you use the common two opposite helix wheels one wheel at a time? It's the two wheel type, Glenn, but they are used ...

reuben,

Did you melt the original rod and re-pour it so the alloy would be the same?

I imagine you would have needed more aluminum than it would yield to complete the pour so what did you add to it or use for the new rod.

Very interresting project and looks very nice!!

I use only a single knurling tool, tool post mounted, plunge type. Harold Harold, Just curious, is that one single diamond pattern wheel, or are you saying that for a diamond pattern you use the common two opposite helix wheels one wheel at a time? I've seen single diamond pattern wheels and have w...

If I may add a little here, Plunging in with the knurl is sort of the opposite of pulling out when threading, so for that reason, it may be advantageous to use the compound slide to adjust the position of the cross slide handle to a comfortable position so a quick twist of the handle is possible wit...

Harold,

Thank you for the explanation.

I now understand your point.

Thank You!

Here is an example of my chart that covers threads from 0-80 to 4"-16 tpi which is quite thick and lives in a binder next to my Van Keuren wires. http://img.photobucket.com/albums/v647/Fighter1/threaddata.jpg Here is an example of another type of chart that gets used in conjunction with the one...

Harold, You seem to be consistently reading things into my posts that simply are not there! I have and use charts when specs are called out and I never disputed or implied that your information was anything other than correct. Nor am I looking for an apology! I simply stated thay my information was ...

Harold, He asked a "basic" question and I gave him a "basic" answer that pertained to the "Basic" Profile chart that is probably depicted in every publication that was ever printed pertaining to threading. I didn't get the impression that he was going to be working on a...

I have Metal Halide lghting in the building!

This job turned out very well. 5" bushings, RC30-36 4140 turned on a manual lathe at 950 sfm with negative rake Cermets. Radii on all edges and turned with Carbide form tools at 650 sfm. Worked out very well as temps hovered in the upper 60's making measurements easy. http://img.photobucket.com...

OK, So now I'm confused. (some more!) Respectfully, Under "Form of Thread" in my Machinists Handbook it states: "For American National thread form the basic width of flat at the crest of the thread form is found as follows: "F"=1/8xP or .125 x P" Where "F"= fl...

Thank You for the correction Marv!

Fortunately, the formula in my computer at work is correct. I was at home going by memory at the time and was not too sure of the result so I found the chart that I posted and my result was between the min and max major diameter, so I thought I had it!