For want of a decent local plywood supplier I will be building in 5mm nidacore honeycomb sandwich, carbon outside, vectran and glass inside. If I can get my hands on some affordable basalt fabric I am sure I will find a few panels for it to feature. It is certainly not going to be as enjoyable as building in wood but at least I will get to learn a few new skills along the way. A lighter boat is almost a guarantee, but that all depends on how many laminates will give me the impact toughness I require.
I do have a partial sheet of nice 6mm ply and will cut the transom, mast partners and a few other small parts from that.
The nidacore sheets are 7ft x 4ft, which, as fortune would have it, is just long enough to cut the main hull panels from 3 sheets, one being halved and butt-joined to the full sheets just like the plans for plywood.
Hi everyone, this is my first post--I've been lurking here getting lots of good info as I build and finally have a few questions myself!
By now the boat is 3D and wired together. The hull, bulkheads, and transom all seem to fit well, and the boat has no twist in it that I can discern. Measurements from the peak of the bow to the corners of the transom are 109" +/- an 1/8", and sighting down the centerline, the tips of the nesting bulkheads "disappear" below the transom at the same time.
I've made a number of spanish windlasses to pull the sides together between the forward and mid bulkhead, to pull out the 1/2" gap between the bottom and the bottom of the nesting bulkheads, to pull the forward bulkhead forward onto its lines, and lastly to try to flatten the bottom seam between bulkheads slightly to close a gap in the bottom panels.
The question is how much of a gap along the keel seam is acceptable? It goes from no gap at the transom and widens to about 1mm around the nesting bulkheads, and up to a maximum of about 3mm halfway between the forward and mid bulkheads. I think the epoxy fillets will cover it just fine, but I just want to make sure it's not a symptom of a larger problem.
Also, the plans don't really give dimensions to make a breasthook or quarter knees--do I just make these to fit the shape of the hull as it stands now? The instructions say the breasthook (included with the kit I suppose) is important to ensure the bow takes the correct shape--so what gives? The sheer lines look nice.
Lastly, I centered the kerf gap of the nesting bulkhead on the "center frame" lines running down the sides--is that correct?
So the breasthook is in, gunwales are on and the quarter knees are secure. I have tacked togeter the panels between the wires! On to the next step of filet and tape.
So last night I was laying everything out to fillet and tape the aft starboard chine, and doing some basic prep of the tack "welds"--pulling the wires and knocking down a few big bumps left over--to make the next step easier, and it occured to me, things would go much better if I could pull all the wires, prep all the seams and fillet, then tape the boat in one fell swoop.
The question is, given that I have a small fillet of epoxy between every wire, can I take out all the wires and prep all the seams, or should I leave the wires in as I work on one seam at a time? I have visions of the boat poping apart as I remove the wires--oh the crazy visions that come from having never done this before.
As always, thanks for the help and advice.
Went to check twist and square, there is shy 1/16th difference in the centerline to outer edge of the hull, and the similar shy 1/16th from transom corner to bow.
Is this shy 1/16th small enough to call it good or should try to work it out?
What other dimenions should i measure to check the squareness and for twist?