Making some progress.
Fiber glassed the bottom
Vacuum bagging
First charge.
First motor testing
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First test with my setup. What a great feeling to get this far. 
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Fitting the motor to the mast, must drill holes
All fitted
Used strings to snake wires through mast
I made two wooden battery boxes and covered in fiberglass
I bought one 12v 1000w power supply to power two ISDT Q8 balance chargers. I am able to charge my batteries using 10amps and 250watts.
https://www.ebay.at/itm/ieGeek-Schaltnetzteil-Netzteil-Trafo-Adapter-Power-Supply-alle-Modelle-LED-Strip/203034644055
An old Makita drill case I have repurposed as a battery storage box.
Battery storage
Battery Box
Battery boxes fit inside te board barely.
Still a lot of work to do!
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You should have bought higher voltage power supply for your charger. You will not max it out with 12v. I have 36v 1000watt supply for my isdt t8 and can charge 6s pack with 30amps. I think the q8 can only handle 34volt max. You should try a 24v power supply or if available higher
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Hey Ack, Yes I was disappointed to see a max out at 10 amps my first thought was to get another power supply and put them in series. I definitely can use more power…
what is the nickels thickness? make sure it can carry max intended current with no heat .You always can weld another strip on top of first one
The nickel strips are .15mm and are doubled up on every parallel length.
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Im back at it. I have found a source in Austria to order EPS foam blocks for a reasonable price. This is a EPS-W 30 180x100x30cm block. I will use this for my next two boards. If there is any interest in ordering a custom size block of foam send me a message.
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Hi, I want to build a second board in the winter.
So I am interested.
Where you bought it?
Hi Alex,
looks good. Where are you located?
Toto
Hi Torsten,
Ried im Innkreis, I hoping to get my first board finished up in the next couple of weeks. All the final details are very time consuming. I have bought the styropor block for my next project which will be a shorter board.
are you using a black epoxy for the box in the board?
the fiberglass itself looks to be of normal color. the finished box looks a lot like carbon.what am i missing?
thx 
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I have used a combination of one layer of 800g multi axial fiberglass for rigidity and strength and then one layer 200g carbon fiber. The bottom of the electronics box is approximately 2 cm from the bottom of the board. I have seen many people adding longitudinal aluminum stiffeners to their board. I am trying to only use the multi axial as my stiffener material. The vertical sides of the electronic box are very strong and in combination with the multi axial that runs the length of the board this board is strong. The board is 180cm long 70cm wide and the weight so far is 8.3 kg (18lbs).
Custom made battery boxes are mostly finished. They fit in the electronic compartment nicely. The Amphenol power connectors are a very good product.
Next steps is building the hatch. I plan on using RIWI’s method here. RIWI’s third build - #6 by Riwi.
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Amphenol power connectors
Prep work for the base support for the hatch. Battery boxes will provide main support.
EPS foam and a plywood sheet are used to provide a leveling structure to lay the glass on.
Self adhesive vinyl sheet applied to the base structure
Pre cut all the carbon fiber and 3 mm XPS HEXAGON foam core material.
Wetting and Laying the carbon fiber and foam core.
All layed up and vacuum bagging.
Success removed the hatch, looking at the top.
Looking at the bottom, the hatch weighs 1.7kg. and is very strong.
It fits very well. A lesson learned is to use something that is not stuck to the board. I had to pry the hatch out with a chisel and damaged the board a tiny bit. A piece of vinyl floating not stuck to anything would have been a easy way to pull on to pop the hatch out!
The Foam Core I used. I used HP Textiles for all my epoxy and fiber glass materials. Im happy with their service and the quality of materials.
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What did you use inside the box to stop the lid bending inwards when you pulled the vacuum?
** edit… I see/read it now “EPS foam and a plywood sheet are used to provide a leveling structure to lay the glass on”
Nice. We just ordered some stuff from them. Also the foam core 
Thank you for the link
I will screw in my hatch and secure it with bolts and inserts
This is the stage where I set the inserts with epoxy. I was very nervous about gluing the board and hatch together. I used packing tape on the edges and on any surface that had potential of having epoxy on it.
Inserts are set and I am happy with the result.
Second step was to fill and level out the remaining gaps. I taped and used a release plastic so I wouldn’t epoxy the bolts in place.
Im happy with the results so far. I still have much sanding and the board will be painted.
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