I'm looking to purchase a a 7" x 12" or 7" x 14" mini metal lathe, brand unknown. Most of them just list threading capabilities of 12 - 52 TPI, but am trying to find out if any of you with one of these has been able to cut 8 TPI? Given that these have a 16T TPI lead screw, mathmatically, change gear setup would need to be: A = 60, B = 40, C = 40 , D = 30. Would like to know if the gears can physically be put on as listed and mesh correctly.
Thanks.