If you use vertical rails, they need substantial support to prevent 
horizontal movement. Unless you get into precision rails, there will be 
looseness, which these small bits can't tolerate. A spring will be 
needed to minimize feed force and provide return to unused position.

Picbits Sales wrote:
> I'm from the UK I'm afraid - not got a clue.
>
> Dom
> ----- Original Message ----- 
> From: "solarwind" <x.solarwind.x@gmail.com>
>
>
>   
>> On Tue, Jul 28, 2009 at 9:28 AM, Picbits Sales<sales@picbits.co.uk> wrote:
>>     
>>> I've got a stack of precision ones here I got at a good price when I was
>>> intending to use them to make a basic CNC machine but went to proper 
>>> linear
>>> rails and bearings in the end.
>>>       
>> That was my second option. You think they sell linear rails and
>> bearings in Home Depot or some place like that? I know I used to have
>>     
>
>   
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