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primary hold down's
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From: D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Saturday, March 07, 1998 5:37 PM
To: Tesla List
Subject: Re: primary hold down's
to: Walt
Use a slightly larger piece of plastic (wider) than you need. Drill your
holes in it for the refrig tubing, and then cut the plastic down the
middle. You now have a matching plastic "cap" that matches your original
piece. You can use small 10-24 nylon plastic machine screws to attach your
"cap" over the notches in your plastic holder as the caps now also have the
same matching notches. We use this technique with 3/8 wide delrin plate
stock to make primary holders when ever we have to hang a TC in the
inverted position. You might have to increase your plate stock to 3/8 inch
thick as the 1/4 inch thick material might be difficult to drill and tap
without cracking the narrow plastic.
DR.RESONANCE-at-next-wave-dot-net
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> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-pupman-dot-com>
> Subject: primary hold down's
> Date: Friday, March 06, 1998 10:08 PM
>
>
> ----------
> From: Walt Kulpa [SMTP:gwkulpa-at-earthlink-dot-net]
> Sent: Friday, March 06, 1998 12:27 PM
> To: tesla-at-pupman-dot-com
> Subject: primary hold down's
>
> Hi, I'm working on the form for my 1/4" refigerator tubing primary.
> I'm planning on using 1/4" polycarb for the support fins. I've got the
> calculations made on where to notch the plasitc in order to create a
> nice uniform 30degree slope and 15 degree rise with 1/4" spacing
> between turns, but what I don't have is, what can i do for holding the
> tubing into the notches? I don't want to just let it lay there, do I?
> I'm not so sure that adehesive is a good idea, is it? How is holding the
> tubing into the plastic commonly done?
> Thanks, Walt Kulpa
>