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Steam water feed injectors

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vtsteam:
 :bow: I'll second that!  :bow:  :clap: :clap:

chipenter:
I kept snapping the ends of the reamers finished up with loads of them , collets helped a lot to keep everything lined up .

sbwhart:

--- Quote from: chipenter on June 19, 2015, 03:34:08 PM ---I kept snapping the ends of the reamers finished up with loads of them , collets helped a lot to keep everything lined up .

--- End quote ---

I broke one D bit, at my first attempt I was gripping it in the drill chuck, so a swapped to using them floating I had no more trouble after that.

In the tool room where I served my apprenticeship, we use to make 400 plus bullet dies a week (that's bullets as in bang) the dies were tools steel and they were all cut using bullet shaped D bits and they were always used with a floating holder, and we had a oil stone to keep them sharp, you could make a batch of 50 with just one D bit, these were  ground up from tool steel, we had our own hardening shop so the dies and D bits were hardened and tempered in house. Now the bullet dies are from tungsten with the form spark eroded in.

Stew

chipenter:
Made the last reamers from HSS steel using a toolpost grinder , they worked the best and were a lot quicker to make , bragging rights have a problem in that two peple have said now you make them you can have a look at mine .

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