Cri-dan

[Brian Lightfoot 1Participant @brianlightfoot1]

What does a cri-dan machine do,

Thanks Brian

[Brian Lightfoot 1Participant @brianlightfoot1]

[Grindstone CowboyParticipant @grindstonecowboy]

This thread seems to have some info.

Rob

[peak4Participant @peak4]

A single point automatic threading lathe.
See the video at the bottom of this page, as well as the embedded one below.
https://vesciomfg.com/capabilities/thread-cutting-grinding/

Bill

[Howard LewisParticipant @howardlewis46836]

Cri Dan machines (B and E models ) were made under licence, at the Sentinel works, in the late 50s, to cut screw htreads, rapidly

The tool made a number of passes, cam controlled..

The test bpiece was to produce a 1" BSW thread,. about 10" long, It did this in under a minute with the swarf coming off as blue wire!

It was quite a show for visitors being shown naround the factory.

Howard

[Author]

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