It looks as though I'll be getting a 24" x 24" piece of 0.375" thick piece of polyethylene for about $30 before shipping. I don't remember who said it, but about milling only 1/16 of an inch into the board: I'm using 1/8 inch copper tubing so I'd imagine that would work well for me, being half the depth the tubing requires. What about arcing though? Would having the tubing fully embedded ease that possibility?
Sent from my Galaxy S®III
-------- Original message --------
From: tesla-request@xxxxxxxxxx
Date:03/05/2014 2:00 PM (GMT-05:00)
To: tesla@xxxxxxxxxx
Subject: Tesla Digest, Vol 77, Issue 5
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Today's Topics:
1. Re: Base (Ken Herrick)
2. Re: Base (krux@xxxxxxxxxx)
3. Re: Base (rlddomsicz)
----------------------------------------------------------------------
Message: 1
Date: Tue, 04 Mar 2014 11:27:44 -0800
From: Ken Herrick <kchdlh@xxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: [TCML] Base
Message-ID: <53162930.6000106@xxxxxxxxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I happened to see just the last bit on this topic so may be repeating
someone. For holding 1/4" tubing, try the little plastic clips
available from McM-Carr that are designed for just that purpose. As I
recall they come in strips, you break off how many you need, then array
the strips radially onto a flat surface to form & hold the spiral shape.
Ken Herrick
------------------------------
Message: 2
Date: Tue, 4 Mar 2014 18:49:38 -0800 (PST)
From: krux@xxxxxxxxxx
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Subject: Re: [TCML] Base
Message-ID: <alpine.LNX.2.00.1403041834500.15076@xxxxxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-15"
> Wow! $160? That sounds pretty steep to me. How thick are they? I can get a 1/2" thick 15"x20" HDPE
> cutting board from my local Sam's Club for $8.98 + local sales tax. Plus, I don't have the hassle of S&H
> charges and the wait. If we are talking about the same?1/2" thickness, the Sam's cutting boards are
> less than half as much per square inch than the Grainger's squares that you referred to. Now if you need
> thicker than 1/2", then that's a different story ;^)
Yea, it's about twice the cost per square inch. Sam's club probably doesn't
sell it in 24" x 24" sheets either. So when you are talking needing larger
pieces, that limits your options. US Plasics cost is about mid way between
the two prices, but you have to be able to receive a larger sheet of it via
shipping.
perl -e 's==UBER?=+y[:-o]}(;->\n{q-yp-y+k}?print:??;-p#)'
------------------------------
Message: 3
Date: Wed, 5 Mar 2014 07:30:45 -0500 (EST)
From: rlddomsicz <rlddomsicz@xxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Subject: Re: [TCML] Base
Message-ID: <1554088702.484623.1394022645733.JavaMail.root@xxxxxxx>
Content-Type: text/plain; charset=ISO-8859-1
Not in my experience.
----- Original Message -----
From: "Yurtle Turtle" <yurtle_t@xxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Monday, March 3, 2014 10:48:41 PM
Subject: Re: [TCML] Base
Grainger is often cheaper than McMaster Carr.
________________________________
From: Jason Johnson <jasonmsusolar@xxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Monday, March 3, 2014 8:30 AM
Subject: Re: [TCML] Base
Polypropylene is another excellent choice.
I find McMaster to be an excellent source for small sized pieces. Not
usually the cheapest, but typically competitive.
http://www.mcmaster.com/#standard-polypropylene-sheets/=qxl3vu
Of course they have UHMW as well, but I think PP is cheaper.
- Jason
On Sun, Mar 2, 2014 at 3:08 PM, Jim Lux <jimlux@xxxxxxxxxxxxx> wrote:
> On 3/2/14 11:42 AM, t-burns14 wrote:
>
>> I have an opportunity to use a CNC milled piece for my base, as seen
>> in one of the Geek Group videos. The milled a spiral into the piece
>> of plastic and then just hammered the tubing into the spiral cutout.
>> I'm wondering what material would be good for that. They might have
>> been using High Density Polyethylene, because I remember them saying
>> it was food grade and polyethylene is used for cutting boards. Any
>> insight? Thanks
>>
>>
> It probably *was* a HDPE cutting board, unless they happened to have a
> source for HDPE scrap.? Otherwise, you're buying a 4x8 foot sheet of the
> plastic.
>
> HDPE cutting boards are readily available in a variety of useful sizes,
> and are cheap.? There are also polycarbonate cutting boards.
>
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