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Nicely done! Great job with those chines (and sheers). Sweet looking lines too. I am looking forward to assembling my Malahini this spring, right now it's an enormous stack of pre-fabbed parts. I made my chines and sheers with African mahogany and noticed they have a few pinhole knots too, thankfull...
Based on the materials list for the Malahini, I estimated 120 square feet for the sides and transom, that includes extra material. The deck is about 96 square feet with extra. These estimates are based on two 3' x 18' sides and a 2' x 6' transom area; the deck estimate is based on three 4' x 8' shee...
- Sun Mar 11, 2018 2:14 pm
- Forum: Hankinson designs
- Topic: 20ft Texas Barrel
- Replies: 166
- Views: 10962
Matt, that makes sense to do a transition of the side topside planking to a butt joint with the bottom planking, just like the plywood hulls. The only layer you need to do that is the top one, the under ones can stay a lap joint like you have. You could put your transition from lap to butt aft far e...
From your photo, part of the problem too, may be the wood grain direction. Flat sawn wood with the growth rings parallel to the wide face will tend to split when bent around the frames. Quarter sawn wood with the growth rings perpendicular to the wide face will be less likely to split. Laminated chi...
- Fri Mar 09, 2018 3:45 pm
- Forum: Power Boats
- Topic: Pour foam versus Polystyrene Blocks
- Replies: 10
- Views: 210
Polyurethane or polyethylene closed cell foams are preferred, either pourable or in blocks. You want closed-cell so it won't absorb water. Blocks can be made from sheets or from pours you do yourself like Matt says. Here is a Glen-L newsletter article that has great info for you: https://www.glen-l....
Matt that looks great, this will be interesting to see the progress. I looked at the transom mod in your link, I remember this was included with the Malahini plans when I got them. It appears to be an option offered for open boat designs where someone can add the self-bailing well. My Malahini plans...
- Mon Mar 05, 2018 9:47 am
- Forum: New Members, Please Introduce Yourself
- Topic: advise on scarff joints please
- Replies: 7
- Views: 264
Hi Gregg, I scarfed the plywood for my Malahini (1/4" and 3/8" okoume) by hand using hand planes. I also used a 12:1 taper for these to get maximum surface for the epoxy and glued it the exact same way JimmY did. I had tried the router method and was not happy with the results and I wanted...
- Sat Mar 03, 2018 9:39 pm
- Forum: Miscellaneous
- Topic: Northeast Weather March '18
- Replies: 6
- Views: 209
Must have been a white knuckle approach and landing at Logan! We here in eastern CT did ok with lots of rain and tremendous wind. Dry shop, dry basement, all is well!
Lots to plan for but you could peek at the GlenL trailer recommended for the Malahini. It has the weight range you need. I calculated a displacement (basically equals weight of the boat/motor/equipment) to be about 1325 pounds (602 kg) which seems what most Malahini builders have ended up with. Addi...
So another way to look at it too, is that oak is very strong compared to mahogany and other hardwoods used for boats. For example you can plane it down to 1/2" thickness and still have it be strong enough for deck boards without the added weight.