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[Rodgearing]

OK so my scratch built tug has been planked with one layer of lime wood planks.
I now have this choice of either another layer of planks or fibre glass and resin.I have enough planks to do another layer so thought I may as well do that albeit my planking of the first layer has a lot to be desired or in Naval parlance crap.So the questionSome one has told me to do the second layer of planking 90 degrees to that of the first layer. That is first layer along the boat (for'd to aft)  Second layer from keel to gunwhale (vertical)Has anyone else done their second layer like that.I am happy to do that cos that'll be a doddle compared to the other way

[nemesis]

Hi, You normally plank diagonally if you are putting two layers on, that is how you get your 90 degrees. Depending how thick your planks are you could go straight to fibre glassing the hull. Use body filler on the outside then a light fibre glass tissue and resin on the inside. nemesis

[Rodgearing]

The tug I am doing is the Anteo.I have the plans and the instructions but its a scratch build.The instructions say two layers and the first layer is for'd to aft not diagonal.

[dougal99]

If you want a second layer it should be laid over the top of the first, front to back ie horizontal. Do you need a second layer. I built my fishing boat from 1/16 timber then fibre glass tissue. Been sailing with no problems nearly 20 years.

[Rodgearing]

OK lets revert to resin and fibre glass.Is any resin better for the job than any other?

[Colin Bishop]

Epoxy finishing resin every time. Never polyester!

Use glass closth not tissue.

https://deluxematerials.co.uk/collections/building-finishing-products/products/fibreglass-cloth-1oz-1m2

Colin

[Rodgearing]

Cheers ColinI have purchased Z-Poxy finishing resin
You suggest a fibre glass cloth how thick is the cloth you suggest seems expensive for a square metre

[Colin Bishop]

You can use tissue but the problem is that when brushing on the resin it is easy to tear it and bunch it up which can be messy and require a lot of sanding down. The cloth is woven like silk and for the most part you can simply drape it over the hull and  'wet' it out. Much easier to get a smooth finish with far less effort. Where there is a join you can simply overlap and rub down the ridge when the resin is cured. You might need two coats of resin to totally fill the weave.

The cloth is described by weoght as per the link above, in this case 1 oz (0unce)

Back in the 1980s I did use disposable nappy liners (unused) as they tended to hang together better that the tissue tissue available!

Colin

[Rodgearing]

Thanks again Colin ordered some 2oz cloth.

[dougal99]

I call the fibre glass 'tissue' as it's so fine as opposed to the glass fibre cloth Halfords et al sell. The catalogue description is 'Ultra lightweight glass cloth'. I use 16gm per square metre (0.6oz). Never had a problem with bunching or tearing. Zpoxy finishing resin the way to go. 

[Colin Bishop]

I thought Halfords cloth is intended for polyester resin. Completely different from the Deluxe Materials cloth for epoxy finishing resin as the binder is not the same. Google it!

Colin

[Mark T]

Hi Rod I think you have more than two options here.  Firstly planking the Anteo is not an easy job so well done on getting the first layer on.


You can now use a filler over your first layer to get the shape that you want but this will involve a lot of sanding but its not that hard.


If you then leave the filler rough on the surface you can then put your final planking on.