Re: Re: What do we want?

Bertho,

If you are throwing bigger pieces of wood around something is definitely
wrong! Perhaps body armour would be appropriate... Anyway, all the
chips are about the same size. I once had a unique problem with a
recycled piece of plywood I was engraving a sign on. I noticed the
cutter was sparking. This is the only time I actually caught the work
piece on fire while machining it! In retrospect if I had been using the
vacuum system this could have been way too exciting! A fire in the
vacuum system could be devastating. Perhaps emc should have an
automatic emergency shutdown input for when the unexpected happens not
directly related to the machine. Perhaps linked to the fire alarm
system. On the other hand maybe that would be ridiculous... Just a
thought.

Clint Bach

Bertho Boman wrote:

>
> From: Bertho Boman <boman@...>
>
> I would also worry about bigger pieces of wood getting stuck between the chain and sprocket and locking up the movement.
> Bertho
> ==============================
>
> > "Ian Wright" <Ian@...> wrote:
> >
> > Hi Andrew,
> >
> > In theory, a chain drive should be less accurate than a cable as movement
> > round the sprockets is not continuous. That is, the links of the chain go
> > round the sprocket as a series of straight lines rather than a pure curve.
> > Whether the resulting (small) error is significant in your application would
> > have to be a part of your considerations.
> >
> > Ian
> > --
> > Ian W. Wright
> > Sheffield UK
>
> > Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the discussion of shop built systems in the above catagories.
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