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Made the hob / worm today.
I added a section to test thread cutting....PIC 1...the purpose was to
check the sharpness of my ACME tool shape before cutting the main
hob and final worm.
I'm glad I did this because I had assumed my thread cutting gears
were still set up to do an M12x1.75.
Turns out it wasn't and I luckily found this out on the test section.
Once sorted I cut the hob and worm and pic 2 shows a close up of the
final ACME thread profile. Good enough.
On to the hobbing....
Steve
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