Gunsmithing SSG TBAS reviews and chuck options

[skog]

I have a buddy that just bought a TL1 and is looking for chuck options. I know there are a few guys on here running these. What is the verdict?

I am assuming the TBAS only adjust in the A and B axis while the X and Y axis you still use the chuck. Is this correct? Also how is the chuck that he packages with it? It is a Gator six jaw. I have never used a gator chuck only bison. Is it a good or should he just spend more money for the bison? Also what is the benefit of a 6 jaw vs 4 jaw vise? Seems the 6 jaw can grip smaller stock but would be more prone to marring do to the small contact area of the jaws.

Thanks
Skog

 

[skog]

somebody has had to played with these before

 

[danpd]

The TBAS does all the aligning, although the gator is a set tru style it has no boss on its backing plate for the chuck to adjust from.

6 jaw allows you to grip the part securely without marring the surface and with less deformation. I've grabbed AI barrels for threading and it doesn't leave a mark.