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Re: Other: Help please big mistake
By:Paul G. Jacobson
Date: 12/13/2002, 8:52 pm
In Response To: Other: Help please big mistake (rburger)

: I am a high school wood shop teacher and I have had several students build
: stitch and epoxy kayaks.

If you have been taking pictures of these projects we would love to see them.

: Today we have noticed that when attaching a sheer
: clamp a student made two left sides. The only Idea we have come up with so
: far is to put an inside and outside sheer clamp on each side and treat the
: extra as a rub rail. Is this even possible?

The problem with your idea for a "fix" will show up when you try to glass over the seam between the deck and the hull. That "preinstalled" rub strip will be difficult cover witht the glass. It won't want to make the right-angle bends, so you'll either have a mess with delamination, or you'll have to spend a lot of time radiusing the edges and applying a fillet to the underside of the erstwhile rubrail.

There have been several ideas for removing the errant sheerclamp. If I may add my two cents, I'd strongly consider the use of a heat gun, or a steamer for getting the panel free from the sheer clamp. But, I don't think you'll be able to heat the area easily unless you reduce the thickness of the sheer strip to something that can be easily heated. I would not try to plane it off, or sand it off.

So, assuming you are working with 3mm or 4mm plywood, I'd suggest you set up a table saw for a 1/4 inch (6mm+) cut, and run the panel through. This should reduce the amount of wood from the sheer strip to a thin (roughly 2mm thick) layer. If your panel is 5.5mm or 1/4 inch, then you will just set your saw for a slightly wider cut than the thickness of the panel.

Heating something this thin should be fairly simple, and that thin strip will be flexible enough to bend back away from the panel. Then, once the joint starts to separate you will be able to slip in a putty knife, or a wedge, between the pieces to aid the process.

Obviously you will want to use the greatest safety procedures when doiing this rip cut, as the panel edge will be curved, so the panel may not sit flat on the saw table.

: Is there a better fix out there?

When all is said and done, it may be faster to cut a new piece, assuming you cut the first one. Kit or otherwise, if these attempts to remove the sheer clamp fail you are going to need a new piece.

Of course you'll need more wood for a new sheer clamp, too.

Hope this helps

PGJ

Messages In This Thread

Other: Help please big mistake
rburger -- 12/13/2002, 11:33 am
Re: Other: Help please big mistake
Gordon Snapp -- 12/13/2002, 9:28 pm
Re: Other: Help please big mistake
Paul G. Jacobson -- 12/13/2002, 8:52 pm
If everythings fail...
Tony -- 12/13/2002, 7:06 pm
if its really a class,
mike allen -- 12/13/2002, 3:53 pm
Re: Other: Help please big mistake
Mike Scarborough -- 12/13/2002, 3:24 pm
Re: Other: Help please big mistake
Jay Babina -- 12/13/2002, 3:54 pm
Re: Other: Help please big mistake
Bill Price -- 12/13/2002, 2:36 pm
Re: Other: Help please big mistake
Roger Nuffer -- 12/13/2002, 1:39 pm
Re: Other: Help please big mistake
Nick Schade - Guillemot Kayaks -- 12/13/2002, 1:37 pm
Re: Other: Help please big mistake
Chip Sandresky -- 12/13/2002, 1:24 pm