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Subject: Re: drawer slides for cnc

From: "Dave Mucha" <dave_mucha@...>
Date: 2003-08-01

One option is to find the local freight companies in your area. A
friend told me that he goes to a monthly auction at a freight company.

seems if a package breaks, and they have no way to identify the
parts, they sell them at auction. I haven't looked at this but it is
a possible local source.

Also, check in the local paper for other auctions. you may find
something neat.

And don't forget yoru scrap yard.

Mine has a full height (6 foot) rack with clear plastic door. I
think he wants $100.00 for it. nothing inside and it's been in the
weather. He gets others that are pulled from old telco stuff.

Dave



--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan
<stefan_trethan@g...> wrote:
> thanks for the tip..
>
> but surplus market is, letc call it nearly non-existent.
> well such markets are for car parts, household stuff, and lots of
other
> things.
> but seldom for technical parts.
>
> there are some professional surplus resellers but the prices are
way too
> high.
>
> the only option i know is ebay...
>
> but thanks for the idea, maybe someone else can get such a rack...
>
> regards
> stefan
>
>
>
> On Thu, 31 Jul 2003 18:17:55 -0400, GraySoul Dragon
<danbarlow@r...>
> wrote:
>
> > Quoting Markus Zingg <m.zingg@n...>:
> >
> >> Hi Stefan
> >>
> >> I figure CNC drilling is definately on topic - at least if using
> >> lasers to drill and "mill" PCB's is on topic too :)) (sorry guys,
> >> could not resist - AND it was interesting)
> >>
> >> With regard to the slides, the slides used in the link are NOT
those
> >> I refered to. The ones I refered to DO NOT use ball bearings.
Instead
> >> the balls are palced along the whole slide making it extremly
stiff
> >> and precise.
> >
> > I don't know how the surplus market is in your area, but here we
have
> > a semi-monthly auction for surplus goods from all over the state
as
> > well as the state university system.
> >
> > There are often mainframe racks with very well engineered rack
slides
> > going for US$10 or less for the whole rack. Using the standard
rack
> > as the mechanincal base is easy, just lay it on its back. Most
of them
> > are steel. If you get one of the smaller hard drive units it has
> > four very nice slides in it that are rated for several hundred
pounds
> > and are very smooth so as not to crash the drive heads.
> >
> > Other surplus equipment can have very good positioners also -- I
once
> > got a Matrix camera for $10 that had meter-long threaded rods with
> > recirculating ball bearing mounts, and the complete motor and
driver
> > schematic taped inside the door.
> >
> > Sometimes scavenging gets you a lot more than you'd think. ;)
> > -Dan Barlow
> >
> >
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