Adding custom threads to Fusion 360

[tooth_dr]

I've started learning how to design simple astro parts and print them, but unfortunately I've hit a stumbling block.  The smallest thread in Fusion 360 is M48 x 1.5mm.  Has anyone successfully modelled their own finer pitched thread ie M48 x 0.75?  If this is possible could you explain how to do it?  I'm making a 72mm OD threaded part for a camera lens, to attached an M48 filter housing. 

 

Many thanks

Adam

[Cornelius Varley]

Does this help

Astro-threads for Fusion 360 - DIY Astronomer - Stargazers Lounge

 

[tooth_dr]

13 minutes ago, Cornelius Varley said:

Does this help

Astro-threads for Fusion 360 - DIY Astronomer - Stargazers Lounge

 

Perfect. Thank you Peter.