Re: Sinterstation Window = Heat loss?

From: RP Scott (
Date: Tue Jun 19 2001 - 18:13:00 EEST

Naw-- Scott is my name.

There's two Scott's here at work.
One is Machinist Scott
I'm RP Scott

You know. . . you can see a lot through a little slot cut into a shield.
Yes. . you have to go right up to the machine and look through it . . but It
isn't like I can see a whole heck of a lot from a couple feet away anyway.

I'm sure the new materials are better than the old ones, but I'm also sure
that some machines are worse than others as far as temperature gradients in
the build area.

On my machine, if I bring the temperature up high enough to minimize curling
on the front edge, then the rear corners end up like bricks.

(Am I too new at this to have learned that I'm not going to be able to
recycle my part cake powder at all?)

I've got a little bit of machine shop resources available.
I may experiment with some auxiliary shields or reflectors.

Anyone who is interested in the results. .. let me know.
(Also be patient. .. it may be weeks before I come up with anything)

Thanks for the replies.

"RP" Scott

>From: Ian Gibson <>
>To: "RP Scott" <>
>Subject: Re: Sinterstation Window = Heat loss?
>Date: Tue, 19 Jun 2001 08:47:10 +0800
>RP (is that your real name? How apt)
>I would have thought what you lose in temperature variation is more than
>matched by what you gain in being able to see the build. If you find a way
>to do both, I'd be interested.
>Although this problem is somewhat academic with the ease in which more
>recent materials process within the machine. Fine nylon, now there was a
>At 09:57 PM 6/18/01 -0000, you wrote:
> >Hi,
> >
> >I'm brand new to the list, so please be gentle with me.
> >
> >I was wondering if anyone has tried to fabricate some sort of heatsheild
> >reflector to avoid losing heat out the window on the Sinterstation door.
> >
> >
> >Or am I crazy to think this is the cause of the "cold spots" in the build
> >chamber that just happen to be in the front corners close to the glass?
> >
> >
> >Thanks in advance.
> >
> >
>Dr. Ian Gibson
>Associate Professor
>Dept. Mechanical Engineering
>The University of Hong Kong
>tel: +852 28597901
>fax: +852 28585415
>I'll see you on the dark side of the moon.

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