Re: preping angle iron

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
<dave_mucha@y...> wrote:

>
> Hi all,
>
> I'm looking at mounting the gear rack on some angle iron or on the

web

> of a channel.
>
> The surface is very rough and I am wonding if I should d any work

on

> it, or just bolt up to to it.

I would recommend that you use a piece of cold rolled steel, or
extruded aluminum between the hot rolled surface of the channel and
your guides and racks. (attached with the wedged washers). That way
you can effectively use shimming to align the precision components
without having to also compensate for hot rolled scale variations
along the way. It depends on the condition of the channel or
angles. Most are very rough. At a minimum use a snag grinder to
knock off high spots.

Fred Smith - IMService