Insufficient attention in the class ?

October 3, 2017

First of all, thanks to the other F36 / F39 builders who have gone through the same process and published their learned lessons. I was convinced that I would not step in the same traps.

Now I know better. Pride comes before the fall.

Lessons learned, stay sharp also at the end of a long building project.

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Using the outer ends of the beams as a mold for making the beam sleeves is not very difficult, I made them with vacuum bagging, but releasing them from the beam outer end is another story. I was warned by the experience of other builders who had great difficulties with releasing the sleeves. This helps me a lot executing a well proven releasing procedure to lever off the beam bolt. So I made some wooden beams and placed them over the beam bolt nut with a big washer in between. Connection with the sleeve is with two layers of  (left over)  carbon UD. I prepared the beam outer ends with 5 layers of a mold release wax. I have used this stuff before and had not difficulties with it ……

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However, somewhere in this process or in my thinking I made a big mistake and my worst nightmare has become true. The sleeves did not want to loosen. Even with a very brute force they are not prepared to separate from the beam. Of course there is always a plan B, but damn, this feels like a loss. I ended up with making a cut in the underside of the sleeve giving space for some wedges. All four sleeves were more or less glued to the beam at the same spot, the edge between underside and outer end. Coincidence ? or has anyone a smart conclusion …

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In retrospect, the preparation with the mold release wax was not good enough. Did I forget this edge ? did I forget it five times ! (I’m not surprised at anything) or should I have used a PVA release agent in addition to the wax. Or using packaging tape in addition to the other mold release stuff which gives then two chances as the tape itself is also able to release. I don’t know. What I do know is that the approach of the four beams at the same time did not prove very clever for such a delicate work. There is no way to adjust the technique and make improvements in the meantime.

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What I do know now is that plan B is not a big deal and is a good solution for quick builders. Thus not worth a nightmare 😉

Pffff, a huge relief.

More photo’s of this adventure are here.

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Post-curing the beams.

October 2, 2017

The slow hardener of Ampreg 21, which I used to build the full carbon beams, likes to be post-cured at a moderately elevated temperature of 50 degrees Celsius during 16 hours. To do this I have built an insulated box heated by a simple blow heater.
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Start making the box and support for the four beams.
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Positioning the beams.
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Finishing the box.
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Post-curing in progress.


YES! The Beams are finished.

July 28, 2017

At least structural, which is a great relief. Since my last post in May I’ve spent 570 hours in building these full carbon things. Including the build hours  before May I’ve spent a total of 630 in building the Beams. That is besides my day job.

That being said, I had to introduce myself to my wife again 😉

So, I’m in a hurry because the launch of Fram is now coming seriously in sight.

However, the good progress of construction remains bad for the updates of this website. Hope you understand that.

Have a look at the photo galleries, Beams Interior and Beams Exterior

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First beam interior finished

May 7, 2017

First of all my apologies for my silence here lately. I am just too busy with getting my boat finished to publish regular updates.

However, last week I reached another milestone. The first beam interior has been finished and the second is also progressing very well. That sounds not very spectacular but for me it is a big step forward as I was very much  looking against it.

The photo gallery of the beam interior has been updated with a lot of new photos so please have a look.

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Unfinished business

March 8, 2017

While I was looking for an image of the infusion around the daggerboard case, I discovered that the photo gallery about the deck laminate and vacuum infusion has not been finished. Sorry about that. I now have added a lot of photo’s about that event.

You can find the gallery here.

After I had turned the hull I wanted to quickly begin fairing work on the deck and in the cockpit. Yet there were still some details that need to be completed.

In the previous post I have described the work around the deck hatches. The photo’s are here.

Furthermore moreover:

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After installing the engine I definite closed the cockpit floor. If it’s ever necessary to lift the engine again I will have to cut out a new hole with the jigsaw.

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Shaped the cockpit coaming ….

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…. finished the laminate on the cockpit coaming in front of the beam bulkhead and released the upper folding strut recess in the aft beam bulkhead.

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The same for the forward beam bulkhead. Until now this recess has been closed off for the purpose of the vacuum infusion of the external laminate.

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Completing the ending of the cabin roof.

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Completing the inside of the bridge deck, designing a system to store the two acrylic washboards inside the bridge deck and mounting a molded glasfibre U-section for the washboards.

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Completed the base for the sliding hatch.

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External laminate for the anchor chain tube.

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Determining window size, making the molds for them and completing the window cut outs.

Furthermore, making a mold to find back all the HD inserts in the deck which will be covered by paint and thus not visible anymore, finishing the forestay chainplate, finding back and finishing all drain holes, etc, etc.

But finally all these details (at starboard side, there is still a port side to do) are completed now and I finally could start the fairing process for cockpit, deck and cabin roof.

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… to be continued …

 


Flush deck hatches

February 14, 2017

Trial fit of the flush deck hatches. I have updated the gallery with the latest photo’s.

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Hoisting day

January 10, 2017

Now the boat is upright again it is time to hoist some heavy items.

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The daggerboard out of the daggerboard case. It was used as a mould for mounting the daggerboardcase slot and since then locked in its position while upside down.

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Engine and Jetthruster.

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