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CNC Cutting


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Happy new year to all yous sea creatures.

Just cleared the decks on the ranch of peoples and urgent tasks so now back into the Morby build.

Strakes are going on and I had forgotten how much I do hate epoxy and patience is the secret to cutting successfully neat and matching gains in 6mm stock.

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On 18/12/2022 at 9:22 PM, Priscilla II said:

The puzzle joint is CNC cut along with the rest of the dinghy and the fit is very accurate.

As to strength the sole and garboard will get glassed both sides and the hull strake joints will receive a light cloth backing glassed on the inside.

It is one version of many puzzle joints for marine applications ,Russel Brown utilises a variation on his PT II nesting dinghy and I do not see any disadvantages.

Scarfing has its place too and Vivier supplies plans that include this method however I am embracing the CNC big model kit thing wholeheartedly and it certainly makes for a very tidy workspace.

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I suspect the contact area in that puzzle joint would easily match that of an 8:1  scarph and possibly  even exceed it. 

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On 18/12/2022 at 9:22 PM, Priscilla II said:

The puzzle joint is CNC cut along with the rest of the dinghy and the fit is very accurate.

As to strength the sole and garboard will get glassed both sides and the hull strake joints will receive a light cloth backing glassed on the inside.

It is one version of many puzzle joints for marine applications ,Russel Brown utilises a variation on his PT II nesting dinghy and I do not see any disadvantages.

Scarfing has its place too and Vivier supplies plans that include this method however I am embracing the CNC big model kit thing wholeheartedly and it certainly makes for a very tidy workspace.

54EE86AE-1877-4DAE-8AA9-6AD6C5D7EE4C.thumb.jpeg.3e311a838d415c6422496e42033fa08f.jpeg203FCE56-64F7-4ADE-9156-E64869955B21.thumb.jpeg.c939dae3df85dcf0777e4fbe0d5bef34.jpeg

 

 

 

I suspect the contact area in that puzzle joint would easily match that of an 8:1  scarph and possibly  even exceed it. 

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6 minutes ago, Frank said:

I suspect the contact area in that puzzle joint would easily match that of an 8:1  scarph and possibly  even exceed it. 

There is also a light fibreglass cloth that straddles the puzzle joint on the inside.

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