Sinclair Neck Turner Mandrels

[jesilva]

Does anyone know of other manufacturer's mandrels that will work with the Sinclair neck turning tool.

Jim

 

[BrettH]

The ones from PMA will work and I think the ones from 21st century will too

 

[jesilva]

Thanks, I will try them

Jim

 

[bow shot]

I'm pretty sure 21st does use an unusual sized mandrel.. I gather that because their site says to pick the model turning body that you want based on whether you will be using their, or a K&M mandrel..

Maybe I got it wrong…that 's always possible, lol!!

Sinclair and K&M swap, but I believe their dimensions (for the portion of the expander and turning mandrels) that lay in the neck of the case is not identical, so you need to use a sinclair pair (expander and turning mandrels) or a K&M pair.

 

[ftrrookie]

21st offers two options. Buy a tool specifically for K&M mandrels or get their regular one and buy adapters to use either 21st or K&M mandrels

 

[bow shot]

HA! Got something right for once, lol!!

 

[GPat]

Of the four manufacturers you list here: PMA, Sinclair, 21st Century and K & M, K&M is the odd man out. K & M uses a .312" (5/16") shank while the other 3 use a .375" shank (major dia). PMA and 21st Century both offer the ability for their neck turners to accept the K&M mandrels though if you so choose.

The specs on the minor dia are different as well. The K & M spec on the minor diameter is .001" under bullet diameter for turning mandrels and bullet diameter for the expanding mandrel. The PMA and Sinclair mandrels share the spec of .002" under bullet diameter for the turning mandrels and .001" under for the expander mandrels. I'm not sure what the specs are for the 21st Century mandrels.

You're gonna have to trust me on this one.

Pat
-PMA Tool