modified malahini

Designs for inboard or outboard power

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DrBryanJ
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Need advise! Is this a disaster waiting to happen?

Postby DrBryanJ » Sat Aug 26, 2017 11:51 am

Went to the garage today ready to stain the sides. ( It has been sanded smooth to 150 grit.) Noticed areas where the wood filler has come out of seams. Can feel a ridge at joints when running hand from chine to sheer. Are my cover boards coming loose? Is this caused by drastic changes in humidity of last few days? What to do now? or should I do nothing but refill the seams and go on from here?
Bryan

Building a malahini "Mona Lisa"

My wife said "If I build a boat, she's getting a divorce."

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DrBryanJ
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Re: modified malahini

Postby DrBryanJ » Sun Sep 03, 2017 9:10 am

Finished prep work on wood yesterday. Some vacuuming to get ride of all the dust and finally ready to stain. With the help of Lisa (with some complaining), I got the sides and transom stained. Used General Finished Brown Mahogany.
IMG_0035[1].JPG

Used method described in video from General Finishes.
Sanded to 150. Cleaned wood with paper towel then tack cloth. Used Surgical Blue tack cloth, doesn't leave wax or varnish on wood. Wet with mineral spirits as a slip coat. Apply stain. Wipe off with lint free cloths.
All the little staple holes have virtually disappeared.
IMG_0038[1].JPG

Looks a little dark, but when I had my test board in the sun it was much lighter.
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Bryan

Building a malahini "Mona Lisa"

My wife said "If I build a boat, she's getting a divorce."

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mrintense
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Re: modified malahini

Postby mrintense » Sun Sep 03, 2017 1:04 pm

Looking good Bryan, I bet it feels good to get to this point. I remember how I felt when I got my transom stained. That seems so long ago now!
Carl
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PeterG
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Re: modified malahini

Postby PeterG » Sun Sep 03, 2017 1:18 pm

Wow! Looks great! Can't wait to see it varnished up nice and shiny, that will look awesome.
Murphy's Law: Anything that can go wrong, will go wrong.
Griffin's Law: Murphy was an optimist.

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DrBryanJ
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Re: modified malahini

Postby DrBryanJ » Sun Sep 03, 2017 3:38 pm

Thanks Carl and Peter. Yes Carl it does feel good. Getting closer to the flip. I can't wait.
Forgot to say the stain was diluted with 10% mineral spirits per General Finishes for large projects.

Wasn't super happy with color. Just seemed too flat. Put a second coat of American Oak. Didn't change the color much, just made it warmer. Garage is too dark now to get a picture. I'll post one tomorrow. Lisa didn't notice any difference. She thinks I'm crazy. She just wants it done and out of the garage. She's happy I cleaned up all the dust though :lol: :lol:
Bryan

Building a malahini "Mona Lisa"

My wife said "If I build a boat, she's getting a divorce."

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DrBryanJ
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Re: modified malahini

Postby DrBryanJ » Wed Sep 27, 2017 8:12 am

Put two coats of epoxy on
IMG_0041[1].JPG
IMG_0040[1].JPG


Started lightly sanding with 150 grit paper.
IMG_0058[1].JPG


Don't want to sand through epoxy, but will these low spots fill with additional coats? Should I continue to sand until they are gone from these two coats?

Bryan
Bryan

Building a malahini "Mona Lisa"

My wife said "If I build a boat, she's getting a divorce."

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BayouBengal
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Re: modified malahini

Postby BayouBengal » Wed Sep 27, 2017 8:44 am

Don't want to sand through epoxy, but will these low spots fill with additional coats? Should I continue to sand until they are gone from these two coats?

Sanding with a longboard between coats, once your sandpaper is touching 90% of the surface area (only missing small specs such as shown), quit sanding.
How many coats of epoxy total are you planning?
What epoxy are you using?
What finish product do you plan to use?

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DrBryanJ
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Re: modified malahini

Postby DrBryanJ » Wed Sep 27, 2017 9:17 am

BayouBengal wrote: How many coats of epoxy total are you planning?
What epoxy are you using?
What finish product do you plan to use?


I think 5 or 6 coats of epoxy.
I'm using system 3 general purpose with slow hardener (It's what I had on hand.)
I haven't decided on varnish or wr-lpu clear.
Bryan

Building a malahini "Mona Lisa"

My wife said "If I build a boat, she's getting a divorce."

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BayouBengal
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Re: modified malahini

Postby BayouBengal » Wed Sep 27, 2017 9:51 am

It may fill during your subsequent coats. Apply a couple more coats and see. If still not filled before applying your final coats, mix up some GelMagic and apply with a squeegee to the spots. It will cure clear and has enough viscosity that it will shouldn't run out. Then sand to ensure that they're filled and apply your final coats.

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DrBryanJ
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Re: modified malahini

Postby DrBryanJ » Wed Sep 27, 2017 10:39 am

Thanks Bayou. Very useful information from you as usual.
Bryan

Building a malahini "Mona Lisa"

My wife said "If I build a boat, she's getting a divorce."

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DrBryanJ
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Re: modified malahini

Postby DrBryanJ » Mon Oct 30, 2017 9:20 am

I am getting ready to fiberglass the bottom. I want to glass to the waterline. Of course the one page of instructions I can not find has where the waterline should be. Does anyone have that dimension?
Bryan

Building a malahini "Mona Lisa"

My wife said "If I build a boat, she's getting a divorce."

Hercdrvr
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Re: modified malahini

Postby Hercdrvr » Mon Oct 30, 2017 11:40 am

Hi Bryan,
Waterline on Malahini is kind of a moving target depending on the weight of the engine. My waterline in 5” from the bottom of transom and runs forward to my best guess near the bow. From the pictures You can see I should have started at 6” at the transom and ended waterline a bit sooner up front. It kind of depends how much bottom paint you want showing under the bow. I think most builders bring their bottom paint too far up the bow. Builders choice on that.
Matt B
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hoodman
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Re: modified malahini

Postby hoodman » Mon Oct 30, 2017 12:38 pm

Your waterline may be different since you added the deep vee. On the Geronimo it's the same as the setup level.

PeterG
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Re: modified malahini

Postby PeterG » Mon Oct 30, 2017 2:41 pm

The MALAHINI design waterline is the same as your setup level line, which is at the top edges of the frame bottom pieces (basically the level of the floor/sole in the boat). That line is a maximum load line at the design displacement, your results will vary. Unloaded or with minimal passenger and gear weight, the bow will ride higher. Where your actual waterline will be is kinda up in the air due to your deep vee mod. I think you can go for the original design waterline and know your actual waterline will be a little below that due to the slightly increased hull volume from the deep vee shape. I am very curious to see what effect your mods will have compared to the original.
Murphy's Law: Anything that can go wrong, will go wrong.
Griffin's Law: Murphy was an optimist.

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DrBryanJ
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Re: modified malahini

Postby DrBryanJ » Tue Oct 31, 2017 5:48 am

Thanks Matt B, Matt and PeterG. I thought I remembered it was at the setup level. That's where I'll glass to.
Bryan

Building a malahini "Mona Lisa"

My wife said "If I build a boat, she's getting a divorce."


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