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This morning I mounted a clear acrylic shield over the Y-axis DRO scale on my mini mill, to keep swarf off the scale. I also replaced the cutoff valve on my old Craftsman air compressor. It still has a slow leak elsewhere but I can live with it for now.
Tonight I reinforced the front legs of the bench on which the mill and my drill press sit. The bench wasn't as stiff as I wanted it so I added additional sections of 2x4, secured with Titebond III wood glue and drywall screws. Big difference. I'm thinking about adding some front-to-back bracing, because the drill press will be coming off this week and a Big Dog Metalworks 7x12 lathe will be taking its place.
An mini Baseball bat to test my ability to do small diameters.
View attachment 55489
I did my first internal threading on the lathe to a shoulder today. After reading a bunch on here (thanks to the group for the help) I took the plunge and gave it a go. The threads are 16 tpi at 2.0625". These are cut in Al. The next set will be cut in bronze.
100_8533 by churchjw, on Flickr
Here is starting cutting to size.
100_8536 by churchjw, on Flickr
Here is the inner size cut with the shoulder. I put the layout fluid on so I could see the threads better.
100_8539 by churchjw, on Flickr
Here is first pass. How do you like my HSS ground threading tool? LOL I could not get my boring bar set so it didn't hit the shoulder.
100_8545 by churchjw, on Flickr
Here is it finished. Quick run with a parting tool and its done.
Jeff
Hah hah hah! I was wondering what that wacky thread was for!! So cool!! I would totally wear those!!!!
Bernie