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4. Transfer of plans onto plywood

Click on any image to see the full size version

Once the plans are aligned, connected and the major subsections cut out, this is what it will look like. Builders of Cirrus can find detailed instructions on plans alignment and plate transfer at the Builders Pages.

Here is an example of the deck plates subsections aligned and attached accurately to the plywood, the wiring holes are now transferred and the cutting of templates has started. You can emphasize the plate outlines with a highlight marker (orange lines) if you wish to clarify the view a bit.
Transferring plate outlines precisely with a sharp knife. Manual plans transfer doesn't get any more accurate than this. The alignment is both globally accurate and locally precise and the kayak plates are now cut in their full length. After this, there is no more scarfing or joining prescarfed plate pieces (without an alignment reference) to mess things up.
Press the knife hard enough so that the lines are clearly visible.

Mark the station numbers and connect the wiring holes with a straight pencil line on the wider hull plates. The majority of the wiring holes will define the exact station locations once the 2D plate is applied to the 3D shape of the kayak mold.

It is a good idea to indicate the plate identity and which end is which. Don't forget that all this marking is on the 'bad side' of plywood so you can doodle to your heart's content. These kayak plates now contain all the necessary shape and spatial reference information and they will also serve as templates for making their 'mirror image' counterparts. For example, these two deck plates are for the starboard side of the kayak and you will use them to generate the port plates - at the same time!

Once the paper templates are transferred to the plywood, hand draw 1/2" - 3/4" margin on the outside of the plate boundaries (black line in the picture) and rough cut the plate or the set of plates out of the large plywood sheet with a jig saw - along the black line. Here, I will be cutting two long deck plates together since they are obviously from the same material and the final cutting of the individual plates will be far more efficient.
In this instance, the short deck plates are marked out for rough cutting from a sheet of 1/8" Sapele veneer plywood.

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Last page update: 11 January 2020