I drill a pilot hole then use a hand nibbler or powered shears ($50).
Dremel tool to smooth once done. Easy job.
On Sat, Feb 24, 2018, 10:42 AM Troy <teslatroy@xxxxxxxxxxxx> wrote:
> Hi VDG'ers,
>
> How do you guys make holes in your bowls? I've made a number of VDGs
> over the years using various approaches but the problem I always have is
> making a hole in the top dome. There are some alternative approaches
> that don't require the top roller to actually be inside the sphere, but
> I prefer my column to extend up into the top sphere. For my next VDG I'm
> planning on using a stainless steel garden gazing globe. I have one
> that's about 40cm in diameter and can get them up to 100cm in diameter.
> It's very thin stainless steel I believe but stainless is really
> difficult to cut through cleanly. I was considering trying a plasma
> cutter to do it. Any thoughts on how that might work or other suggestions?
>
> Thanks,
> Troy.
>
>
> On 21/02/18 22:15, Matthew Sweeney wrote:
> > A local bakery had some they were going to upgrade, I need to get back to
> > them to see if they will still consider selling me the old ones.
> >
> > For now I use the standard 14" 'banda blanks' from IKEA.
> >
> > On Wed, Feb 21, 2018, 1:35 PM Tim Flood <tflood@xxxxxxxxxxx> wrote:
> >
> >> Hi Matthew,
> >>
> >> Could you share the potential source of cheap mixing bowls?
> >>
> >> Thank you.
> >>
> >> On Wed, Feb 21, 2018 at 12:07 AM, Matthew Sweeney <msweeney23@xxxxxxxxx
> >
> >> wrote:
> >>
> >>> Sorry I missed one. Under the bottom insulator made a Faraday cage from
> >>> soft metal screen and placed all electrics within it. Use a different
> >> earth
> >>> from VDG earth, for which I use copper rod in ground.
> >>>
> >>> On Fri, Feb 16, 2018, 8:17 PM doug <doug11642@xxxxxxxxxxx> wrote:
> >>>
> >>>> For those also interested in VanDeGraaffs a question
> >>>> This is a video of a VDG I just finished building, You will notice
> some
> >>>> strikes to the dimmer switch, would it be wise to use a 2 wire +
> ground
> >>> for
> >>>> the AC hookup I have instead of the 2 wire only?
> >>>> Doug
> >>>>
> >>>> https://youtu.be/DlCD2jYjg2A
> >>>> _______________________________________________
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> >>>>
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> >
> >
>
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