Hi,
I got Derek's DVD on KSS and he shows in there that he fills the angle
iron with thickened epoxy, coats the PVC with fiberglass and attaches
that to the thickened epoxy. After it is all cured, the PVC tube is
removed and the quarter round (roughly) epoxy/fiberglass mold is
removed from the angle iron. What he doesn't show is just how big a
radius he is making, or how flexible it is.
- Gardner
On Thu, May 28, 2009 at 10:19 AM, George Kuck <chesapeake410@
>
>
> Hello Gardner,
> As far as I know Derek uses the mold for smaller radius es in a flat deck
> and puts a PVC pipe in laminate (stays in panel) on the side panel to form
> the inside radius.
>
> --- On Thu, 5/28/09, Gardner Pomper <gardner@networknow.
>
> From: Gardner Pomper <gardner@networknow.
> Subject: Re: [harryproa] Re: DER - how big a radius?
> To: harryproa@yahoogrou
> Date: Thursday, May 28, 2009, 9:12 AM
>
> George,
>
> You have a point that a large radius (like 8") could be just bent from
> the foam. My ww hull keel will be flat in the middle, then bent with
> 6" radius.
>
> The problem is the compound curvature that happens when the deck bends
> down and the hull bends in. I am gathering that derek's DER can
> somehow bend to match that curvature, although I am at a loss to see
> how. Maybe he slices the mold up every half inch?
>
> Strip planking would allow the compound curvature, but then I need to
> make frames and all for that, right?
>
> I think Derek is at a boat show, so I am not getting any feedback from
> him on the DER.
>
> - Gardner
>
> On Thu, May 28, 2009 at 8:21 AM, George Kuck <chesapeake410@ yahoo.com>
> wrote:
>>
>>
>> Hello,
>> I would think you would save time by skipping making a mold and just strip
>> plank(or form in place foam core ) large radius and then glass by hand
>> overlapping flat panel sides and deck. This way you complete edge and
>> join
>> in one operation. You would thin have to turn hull over and glass inside.
>> Alternately you could strip form form edge but not glue to deck and side.
>> Then you would remove and glass inside, put back in place, glass outside,
>> then the only thing left would be to tape the join on inside which you may
>> be able to do without turning the hull over.
>>
>> George Kuck
>> Chestertown, Md.
>>
>> --- On Wed, 5/27/09, Robert <cateran1949@ yahoo.co. uk> wrote:
>>
>> From: Robert <cateran1949@ yahoo.co. uk>
>> Subject: [harryproa] Re: DER - how big a radius?
>> To: harryproa@yahoogrou ps.com.au
>> Date: Wednesday, May 27, 2009, 11:33 PM
>>
>> -For a larger radius I was thinking of two timber strips at right angles
>> with some radiused frames attached. Plywood or melamine is then pressed
>> into
>> them , giving you the mould. -- In harryproa@yahoogrou ps.com.au, Gardner
>> Pomper <gardner@... > wrote:
>>>
>>> Rob,
>>>
>>> Are we talking about 4" radius or diameter? The PVC I have available
>>> is 4" diameter.
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