Re: [CAD_CAM_EDM_DRO] Re: Linear rail & ball screw size suggestions

Ballendo,

Good points! I am aware of the dangers of these materials. Thanks for the
clues (LPKF & T-Tech) I got some ideas from their web sites. I'm hoping to
come up with a decent dust collection system for less than the $1000
Nilfisk. Maybe a fully enclosed system will be easier to control? One of
the problems I encounter when cutting these materials over 2mm thick is the
dust gums up in the slot and does not extract well. This is using FRP type
cutters on a milling machine. I might try a small steam of air at the base
of the cutter....

Thanks for the tips,

Jay

----- Original Message -----
From: "ballendo" <ballendo@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, April 14, 2002 4:49 AM
Subject: [CAD_CAM_EDM_DRO] Re: Linear rail & ball screw size suggestions


> Jay,
>
> Since you'vwe mentioned the glass fibres and graphite... Be sure your
> vacuum system has either a VERY fine "capture" capability, and/or is
> located away from humans and animals... The typical vacuum used with
> the commercial tabletop pcb miller/drills (LPKF and T-Tech) is an 850
> dollar Nilfilsk. You really don't want to be breathing a mix of
> epoxy, graphite, and glass fibres! A HEPA filter on the "output" of
> your shopvac "may" work; but be aware of the safety risks involved in
> your chosen materials.
>
> And graphite has plagued many first time machine designers. It is
> conductive, and very rough on machinery/bearings when combined with
> the epoxy/glass. Be sure to keep it out of your electricals!
>
> Hope this helps,
>
> Ballendo
>
> --- In CAD_CAM_EDM_DRO@y..., "J.Critchfield" <js3mc@a...> wrote:
> > This is great! Now we're cooking with fire.
> >
> > Jan- I was not aware about dust and ballscrews- Thanks! I'm sure
> graphite
> > and glass dust won't help matters either though I do plan on using
> a dust
> > collection system on it. In regards to your experience with trim
> routers,
> > is it worthwhile or should I go with a larger router to begin with?
> Cost of
> > the router is not the issue just size. Maybe that should not be a
> concern at
> > all. How was the Makita better? What was is it used for on you
> machine?
> >
> > Chris L- Good point on the 0,0 location. I'm sure I would have
> missed that.
> >
> >
> > Jay
>
>
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