David Tyler wrote:

"...  and leave with a flat pack boat." 

That being sadly only around 10% of a "boat"

David Tyler wrote:

I had a couple of days weather-bound at the Ardmore Islands (favourite spot), and passed the time by doing some more drawing work. There were some errors in the one sixth part drawings, so I hope nobody has used that drawing. Here's an updated version, with more parts added.

And here is what it looks like.

I must apologise. This model was created in a very short time by glueing the drawings onto stiff card, cutting out the parts using an exacto knife (scalpel) and glueing the seams with hot melt glue. It looked pretty good until I decided to paint it with water based line marking paint. Doh! At which point it went rather limp and wobbly. Some polyfiller and 40 grit sandpaper helped a bit, but I am very ashamed.

There is nothing quite like seeing the thing in real life

And view the rather sweet fore sections here 

The interesting thing is to hold it in your hand and imagine how she will handle. Inclining the vessel gives you a much better idea of what might be going on with a bit of breeze.

I think it took me around 90 minutes to knock this model up. The burns from the hot glue are healing nicely thanks.

I would recommend anyone with even a vague interest to spend a little time and hold this vessel in your hands. 

I could spend more time on this cardboard model but I think I would rather head off to the local CNC shop and try David's larger drawing. 

When this is done the theory is you should be able to drop by your local CNC shop with the cut files and leave with a flat pack boat. 

Hull.

26 sheets (ish) of 9mm ply and a few bits of 6mm.

Mirror dinghy for adults.

Thanks heaps David. 

My Dad used to say "if it looks right it will fly right" 

I _know_ this will sail right. 

Don't think I'd make the RC model from cardboard though.

I'll let you know how this develops.

PS apologies for the poor photos. I am rather pressed for time just now.

Hi David, that looks neat. Did you manage to draw those panels in QCAD or did you use some other program (e.g. Deftship, as below) to develop them before exporting the result to QCAD?

Arne

Here is a DXF file containing the major components at 1:6 scale, nested onto sheets of 1220mm x 1220mm x 1.5mm model aircraft birch plywood.

The idea is that this file can be taken to a CNC machine shop to be cut out, and that the bulkheads and longitudinals can be slotted together first, followed by the hull panels, resulting in, as near as maybe, an "instant boat". After this pilot project has proved the panel shapes, the same drawing can be scaled up to full size, and again, the file can be taken to a CNC machine shop to be cut out. The aim is for a very quick, easy assembly, with very little to do in the way of laying out offsets, scribing pieces that fit to the curve of the hull, and pattern-making.

Are there any model makers out there who would like to try modelling a SibLim 7 metre?

  Here are:

A pdf of the hull panels at 1:6 scale that could be CNC cut from an 8ft x 4ft sheet of 1/16in plywood.

A pdf of the hull panels at 1:18 scale that could be printed onto an A1 sheet of thin card.

The original dxf file of these panels, for changing to any desired scale.