Re: linear bearing based on ground flat stock

Graham,

You wouldn't want to use a 120° cutter IMO. Chatter city, poor
finish, etc. 60° cutters are common.

I'd not use the hex bar, though it would work.

I think you'll find it far easier to set up and use the square bar.
As mentioned previously, you can simply place it in a couple of--
inexpensive--vee-blocks, and machine short flats where you'd like to
give support or place tapped holes or through holes for mounting.)
There's really no need to make the entire bar into a "flat" with 90°
edges, IMO.

(You did say you were seeking fast,light, easy, and cheap. I smell
feature creep<G>)

KISS,

Ballendo

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Graham Stabler" <eexgs@...>
wrote:

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, JanRwl@ wrote:
>
> > Graham (Chapman?):
>
> Stabler
>
> Generally I am starting to like the idea of the home machined
> v-rollers but I don't fancy trying to make 12" lengths of v edged

rail

> on my emco I'm more likely to go with square bar (possibly

truncated)

> or some other option.
>
> Bill said I could machine a truncated hexagon from bar, could just

use

> hexigonal bar stock? The V's would need to be 120 degree, is that

a

> problem? Are there any off the shelf sources of lathe tools with a
> 120 degree cut?
>
> Graham
>