[sdiy] Easy Magic! (Swirling Panels)

[harrybissell]

Yeah Cynthia...

VALVE grinding paste... thats what they use to make matched sets of
EL-34s over in England...

<bfg>

Yeah, that could be some confusion there. Having been abused as a child
slave
laborer  (grinding valve seats for my Dad... not an easy job)... I know what
its like.
Its probably as much work, btw... to get the "Spirit of St. Louis" finish on
a synth.

And seriously...  if you DO make such a finish it will really show scratches
well...

H^) harry

> Thanks Ian, John, Terry, Simon, Jim and Harry!
>
> So... This technique is called "Damasking"
>
> cool!
>
> (prolly because the inventor was tired of all the damn people asking!)
>
> LOL!
>
> > Valve Grinding Paste
>
> Hmm...
> Haven't heard of this before maybe this is an English um, thingie?
>
> I suppose I could try Pearl Drops abrasive tooth polish if I had to!
>
> LOL!
>
> As far as random patterns it's all I can do without an XY mill table
> for my drill press.  but, if I actually ~did~ get an XY table,
> I could hook up some High-Power LFO driven servo motors to it
> and make interesting patterns in the aluminum with different waveforms!
>
> This would work much better than that Square Wave driven Toaster...
> (Ok, I should've put an inverted output to keep the toast from burning!)
>
> LOL!
>
> Thanks guys!
>
> Cynthia
>
> > I don't know the name, but one method that is in my mind from some
> > where is using a wooden dowel with an abrasive grit.  I imagine that
> > little pieces of round emery cloth glued to the end of a dowel would
> > also work.  I think the idea of the grit is that you can keep adding
> > grit to keep the abrasion consistent.
>
> >> Hi Gang!
> >>
> >> I just thought it would be fun to share a
> >> technique I just discovered.
> >>
> >> In the process of making a little adapter box, I scribed lines onto
> >> the soft thin aluminum panels of one of those Radio Shack plastic
> >> and metal enclosures.
> >>
> >> After drilling out the holes, I tried erasing the pencil lines
> >> I'd scribed, only to find that micro abrasive bits in the eraser
> >> made an awful indelible "smudge" on the panel!  Yikes!
> >> (It looked awful, and I couldn't find a way to smooth it off)
> >>
> >> I thought well, let's "make lemonade out of lemons" and chucked the
> >> pencil in the drill press as if it was a drill bit, and then ran
> >> the panel around under the drill press while spotting
> >> the spinning eraser down momentarily onto the aluminum every
> >> quarter-inch or so, (5 MM ?)
> >>
> >> It made those really cool machined aluminum swirls that you see
> >> on race car dashboards and fancy machine shop items! Wow!
> >>
> >> A normal machine shop uses some special bit or tool for this,
> >> and of course runs the panel precisely along the X Y table of
> >> a milling machine for evenly spaced swirls...
> >> But I just discovered that lots of ~randomly~ placed swirls
> >> created by a spinning pencil eraser actually look really cool too!
> >>
> >> (Who wouldda' thunk it?)  LOL!
> >>
> >> Best Wishes!
> >>
> >> Cynthia
> >> Slayer of Solder
> >>
> >> http://www.cyndustries.com/
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> Hi Gang!
> >>
> >> I just thought it would be fun to share a
> >> technique I just discovered.
> >>
> >> In the process of making a little adapter box, I scribed lines onto
> >> the soft thin aluminum panels of one of those Radio Shack plastic
> >> and metal enclosures.
> >>
> >> After drilling out the holes, I tried erasing the pencil lines
> >> I'd scribed, only to find that micro abrasive bits in the eraser
> >> made an awful indelible "smudge" on the panel!  Yikes!
> >> (It looked awful, and I couldn't find a way to smooth it off)
> >>
> >> I thought well, let's "make lemonade out of lemons" and chucked the
> >> pencil in the drill press as if it was a drill bit, and then ran
> >> the panel around under the drill press while spotting
> >> the spinning eraser down momentarily onto the aluminum every
> >> quarter-inch or so, (5 MM ?)
> >>
> >> It made those really cool machined aluminum swirls that you see
> >> on race car dashboards and fancy machine shop items! Wow!
> >>
> >> A normal machine shop uses some special bit or tool for this,
> >> and of course runs the panel precisely along the X Y table of
> >> a milling machine for evenly spaced swirls...
> >> But I just discovered that lots of ~randomly~ placed swirls
> >> created by a spinning pencil eraser actually look really cool too!
> >>
> >> (Who wouldda' thunk it?)  LOL!
> >>
> >> Best Wishes!
> >>
> >> Cynthia
> >> Slayer of Solder
> >>
> >> http://www.cyndustries.com/
> >>
> >>
> >>
> >
> >
> >
> >
> >
>
> on 12/6/03 9:39 AM, Ian Fritz at ijfritz at earthlink.net wrote:
>
> > At 07:12 PM 12/5/2003, harrybissell wrote:
> >> john mahoney wrote:
> >>
> >> Ian,
> >>
> >>> There are still hobby/shop magazines?!
> >>
> >> ( H^) harry added )
> >> and you admit READING them ???    :^P
> >>
> >> <bfg>
> >>
> >> H^) harry
> >
> >
> > LOL!  Yeah, and cover-to-cover to boot.  :-)
> >
> > I've even read big chunks of the Machinery's Handbook!
> >
> > Ian
> >