Search found 58 matches

by Darren
Mon Oct 14, 2019 2:55 pm
Forum: Building, Timber and Joinery
Topic: ply wood from boatcraft or plywood + panal
Replies: 6
Views: 2073

Re: ply wood from boatcraft or plywood + panal

I saw that Bunnings were flogging "Marine Ply" - no markings of any kind in terms of what they mean. Just AA faces, hardwood, marine quality bond. Very non specific
by Darren
Mon May 13, 2019 2:42 pm
Forum: The Odd Spot - When it doesn't fit below
Topic: Camera as forward lookout
Replies: 1
Views: 1431

Re: Camera as forward lookout

Keeping the lens clean would be a problem. It would become crusted in salt pretty quickly I think (based on how little it takes to mess the reversing camera in my car)
by Darren
Mon May 16, 2016 5:02 pm
Forum: Building, Timber and Joinery
Topic: Scarf vs. butt plate
Replies: 26
Views: 15749

Re: Scarf vs. butt plate

Fyi have you seen how they join the duflex panels together, a smallish joint compared to the step scarf and none of them have fallen apart. .... Don't forget there are now over 115 easy catamarans on the water as we speak all constructed the same way with no structual failures. I think we all have ...
by Darren
Thu May 05, 2016 5:17 pm
Forum: Building, Timber and Joinery
Topic: Scarf vs. butt plate
Replies: 26
Views: 15749

Re: Scarf vs. butt plate

FYI - found a few things here. Not talking about ply, but useful none the less. http://lumberjocks.com/topics/30026 https://s3.amazonaws.com/vs-lumberjocks.com/lriuooa.jpg "In half-lap part of the joint is end grain, which is weak, although not inessential. If the beam is bent the failure will occur...
by Darren
Thu May 05, 2016 11:33 am
Forum: Building, Timber and Joinery
Topic: Scarf vs. butt plate
Replies: 26
Views: 15749

Re: Scarf vs. butt plate

Darren, If you are building a Sarah, the bridgedeck is step scarffed together and as you say the joints are close to bulkheads, however there is a 200mm but joint that gets attatched to the joint between frames 3 and 5 after the bridge is in place, there is also fore and aft 200mm but joint on the ...
by Darren
Wed May 04, 2016 12:29 pm
Forum: Building, Timber and Joinery
Topic: Scarf vs. butt plate
Replies: 26
Views: 15749

Re: Scarf vs. butt plate

The original question referred to hull and decks which are all stringers with the ply attatched, so there is no, or almost no bending. A scarf joint will reduce the yield of your ply by whatever the length of the scarf is, so a 1200 mm sheet becomes 1050 or 1100 mm sheet. It takes more time compare...
by Darren
Tue May 03, 2016 4:18 pm
Forum: Multi-hull Builds
Topic: Micks Spirited 480
Replies: 71
Views: 43214

Re: Micks Spirited 480

And now, Roam is famous. 14 pages in Multihull World. Nice write up. I took my motorbike to Snellens via Weldbourogh from Launny a few weeks back to have a look at Roam, just for some motivation. It worked :) There's also been a Lightwave 45 moored in the Tamar to remind me what I'm missing when I g...
by Darren
Tue May 03, 2016 4:03 pm
Forum: Building, Timber and Joinery
Topic: Scarf vs. butt plate
Replies: 26
Views: 15749

Re: Scarf vs. butt plate

I'm trying to picture in my head what is going on structurally in a step scarf, and I don't really like it. I think it's misleading to call it a scarf. Because there is no overlap in the outside plies, you don't get that strength in the outer skin. Under a bending load, I'd imagine the effective thi...
by Darren
Wed Mar 30, 2016 10:03 am
Forum: Glassing and Epoxies
Topic: Vertical Strip Planking
Replies: 6
Views: 4147

Re: Vertical Strip Planking

I find foam fascinating stuff. I guess the key trade of is the time taken to build the mold. When you hear the fairing war stories for flat panel ply builds, it might be a fair trade off (no pun intended).
by Darren
Fri Feb 05, 2016 12:08 pm
Forum: Multi-hull Builds
Topic: Micks Spirited 480
Replies: 71
Views: 43214

Re: Micks Spirited 480

I hear you about the SW coast. It's always been on my list, and even more so now after watching those videos.
Thanks