Need a tap made

On a G0709, it looks like you can cut a 10 TPI or a 40 TPI, whcih means with some change gears, you can almost definitely get to 30 TPI in one of those settings.

To do it in the 10 TPI setting, youd need gears that would let you run the gearbox 3x speed. I don't know what the drivetrain on the left looks like, but if you took pictures and took thread counts, we could probably give you a hand.

For 40 TPI, you'd need to run the gearbox at 3/4 speed, which is likely easier.

THere are other options too... 12 TPI setting is a 2.5:1 ratio, which might be easier than 3x.and 20 TPI lets you do 1.5x speed.
 
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