Mal's Malahini down under

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Mal
Posts: 18
Joined: Tue Aug 15, 2017 12:03 am

Mal's Malahini down under

Post by Mal »

Malcolm is my name. I'm a builder by trade, bought a small 3 metre long zip style boat and enjoyed re-decking it in mahogany with a white pine insert. It looks great in the deep blue/green waters of lake Wakatipu, South Island New Zealand.
Got so excited I bought my first Glen L Malahini plan, ordered the timbers and really looking forward to the build.
IMG_1433.jpg

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Gayle Brantuk
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Location: San Clemente, CA
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Re: Mal's Malahini down under

Post by Gayle Brantuk »

Mal,

Beautiful boat! Welcome to our Forum and we look forward to "seeing" you build the Malahini down under...

JimmY
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Location: Brighton, MI

Re: Mal's Malahini down under

Post by JimmY »

Welcome. That looks like a Glen L Squirt.

Nice job.
-Jim
Nothing says poor craftsmanship like wrinkles in your duct tape!

Mal
Posts: 18
Joined: Tue Aug 15, 2017 12:03 am

Re: Mal's Malahini down under

Post by Mal »

Thanks for that.
Yes, just begun machining the mahogany timber and broke a cog on the thicknesser which slowed me down a notch.

Mal
Posts: 18
Joined: Tue Aug 15, 2017 12:03 am

Re: Mal's Malahini down under

Post by Mal »

Hi just got the no 1 frame together tonight hope to get frame 2 on Monday

PeterG
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Re: Mal's Malahini down under

Post by PeterG »

You are moving right along, sounds great! The frames are pretty straightforward for layout and assembly. The transom is more complex because the pattern and plan dimensions are for the aft (exterior) surface and can take as much time as the four frames. Just take your time, ask questions because others here will help, and most of all have fun! Oh, and post pictures!
Murphy's Law: Anything that can go wrong, will go wrong.
Griffin's Law: Murphy was an optimist.

Mal
Posts: 18
Joined: Tue Aug 15, 2017 12:03 am

Re: Mal's Malahini down under

Post by Mal »

Frame 1 : Using the two-pot Norski 221 Epoxy Glue I had from the work on the previous little boat, I set about gluing the mahogany frame to the tantalised ply gussets. After more than an hour I noticed the glue hadn't gone off so phoned the number on the glue jar. VERY helpful woman confirmed my fear: the glue does not suit tantalised wood. She said it was the correct glue BUT I had to use a different hardener, which she is sending me.
Because the glue hadn't set it was easy to pull it all apart - something to think about!
In the mean time I've cut out the rest of the gussets and had a tidy up . . .
Attachments
frame 1 laid out
frame 1 laid out
timbers cut and numbered
timbers cut and numbered
workshop and 20" wide board ready for action
workshop and 20" wide board ready for action

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Gayle Brantuk
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Re: Mal's Malahini down under

Post by Gayle Brantuk »

Looking good, Mal!

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Gayle Brantuk
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Re: Mal's Malahini down under

Post by Gayle Brantuk »

I hate to be the one to ask this, Mal, but what is tantalised wood?

rleete
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Re: Mal's Malahini down under

Post by rleete »

Proprietary name for a brand of pressure treated.

And the word is "tanalised", from "TANALITH E", which is the brand name of the chemical compound used. Similar to copper based pressure treated here in the States.

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Gayle Brantuk
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Re: Mal's Malahini down under

Post by Gayle Brantuk »

Thanks for the clarification! That's what I figured, just hadn't heard that term before.

Mal
Posts: 18
Joined: Tue Aug 15, 2017 12:03 am

Re: Mal's Malahini down under

Post by Mal »

Long time, no hear from me. I've been busy and even busier now.
Frame completed: mahogany with tanalised gussets. Changed from Norski (harder to mix) to West System 206 which I found a lot easier to mix. Didn't make up a steamer to bend the timbers, just wrapped them with boiling hot, wet towels, leaving them over night to bend.
Ply went on: marine 9mm on the bottom and 6mm on sides ( we're in metric here - not imperial)

In the beginning
In the beginning
Notches for water to exit the hull
Notches for water to exit the hull
Pipe clamps & 2" washers to hold until the glue goes off
Pipe clamps & 2" washers to hold until the glue goes off

JimmY
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Re: Mal's Malahini down under

Post by JimmY »

The framing looks really nice, good craftsmanship. Glad to see you are still at it.
-Jim
Nothing says poor craftsmanship like wrinkles in your duct tape!

Mal
Posts: 18
Joined: Tue Aug 15, 2017 12:03 am

Re: Mal's Malahini down under

Post by Mal »

I got the ply on by various methods including pre-bending, draping with towels heated with boiling water overnight, props off the garage wall, clamps and levers which I increased the tension of hour by hour.
Then the ply was fitted up to the frames and glued and screws using 2 inch wide washers to spread the pressure.
using plenty of clamps and props
using plenty of clamps and props
nearly there
nearly there
ply completed
ply completed

Mal
Posts: 18
Joined: Tue Aug 15, 2017 12:03 am

Re: Mal's Malahini down under

Post by Mal »

OK time to fiber glass: I watched a few YouTube clips as I've never used the product before.
I bought a length of cloth and the West system glass and began draping it over the hull to let it settle. Cutting it was interesting but the biggest thing was not knowing how much time I had before it went off.
I put down a layer of glass over the hull then draped the cloth over and quickly rolled it all to express the glue through the fibres. Just one layer over the whole hull but didn't realise the overlaps would create a ridge which I had to sand back and fill / feather both sides. 20/20 in hindsight . . . .
transom to go
transom to go

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