Monday, May 24, 2010

Lines - to tweak or not to tweak?

Tweaking battens beyond end points can in some cases produce a more fair curve.

There is one restriction though, ask yourself is there a physical structural entity in the end object to support such a curve?

In the case of waterlines, sure, these are hypothetical and have nothing to do with structure, so tweaking if required, is good in this case.

Buttocks and diagonals do however have something to do with the structure ( ie frames and planking ) so never tweak the battens beyond these lines.  There is nothing structural beyond the edge other than air/water that can support this shape.

Friday, May 14, 2010

Re-sawing White Cedar

About a month ago we went milling again with the Saturday class and were able to mill up a white cedar tree in San Anselmo.  We brought the flitches back to Sausalito and here we are last weekend working on the large ship saw with Bob and Roxy.  No body makes these saws anymore and there are probably less than six operational  in the USA.  It is quite a deal to operate the saw and requires much attention and care!  The use of pipe rollers make the task much easier as the flitch weighs in at about 300lbs!  Bob is wearing a mask as about 50% of people have or develop allergies to cedar, despite it’s wonderful ‘incense’ aroma.