Re: [CAD_CAM_EDM_DRO] Re: Stereolithography machine

Hi Skull (?),

I think we need the UV laser stuff first. The XY is easy enough.

They appear to simply do a simple raster scan, so we need to convert
"drawing" data to a simple raster format. BMP? There is software out
there to do that.

Then the STL controller would read the BMP file and output a line at a
time The UV laser needs to be turned on/off in response to each bit in
the scan line (starting to sound like Jon's photo plotter).

Do a line in say X, then bump up a line in Y, and come back in X. After
every complete "frame", we'd move a little in Z. Similar to way one
scans with a digitizing probe.

Any ideas on how to build a low cost focused UV laser?

And it sounds like we then flood the work area with fresh epoxy. A
little PERISTALTIC pump (the company I work for MAKES them) can do this
job. Sounds messy!

REMEMBER, we were just dreaming about home CNC a few years ago!

Alan KM6VV


skullworks wrote:

> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Mat" <bergson7@...> wrote:
>
>>Hello friends
>>I am trying build small stereolithography machine and we have
>
> problem
>
>>with Ultra violet laser for it. There are a couple sources for it
>
> but at
>
>>the moment all of them are quite expensive. I am still searching.
>>
>>
>>Is there anybody who made or tried make this in the past ?
>>Best regards.
>>Mat
>>
>
> I have never seen any home built STL machines, this may be because it
> would need its own very unique driver/interpreter - I don't think
> that anything like EMC or Mach could come close to driving that type
> of system - unless a very special "repost" would convert STL into the
> slice segments needed.
>
> But - if a set of drawings and an open source type project were to
> ever surface...it would jump to the top of my TODO project list.
>
> I'm going to WESTEC on tues and will drewl over the
> STL and other rapid prototype equipment, for now its just another
> technology I can only dream about (and contract out).
>
>