Fatih wrote: ↑Thu Feb 11, 2021 2:33 pm
fallguy1000 wrote: ↑Thu Feb 11, 2021 2:21 pm
Fatih wrote: ↑Thu Feb 11, 2021 1:18 pm
Dear friends ,
I have some questions;
Firstly i would like to learn about how i am going to fiberglass the hull.Where is the lamination schedule for it?
(Howmany layer will be needed to cover on hull and which type of fiber glases etc.)
Secondly, which foam board is better GURIT,AIREX or MARICELL ?Which i have to choose?
Lastly,can tell me the distance between the bow point to first mold is 374 mand then 355 mm between rest of all molds?
Thx and Regards
The glassing schedule is on the back pages of the construction manual. You need to do some practice work first or find an experienced laminator to help you. Error in workmanship on the hull bottom is critical and can lead to hydraulic failures. Air entrainment is a no-no. I can give you advice, but performance is something else. The good news is there are laminators in Turkey and you might find a person who can help and teach you for a small fee.
The choice of marine foam is yours, but you want good shear properties and need to compare them to the divinycel spec.
I can check the measurements later when I am by the books.
Again great thx master Dan.
One more question to you;
while fiberglassing;it seems 2-3 layers must be applied.Am i going to apply all these layer in a one time operation.Or will fiberglass sequentially(when 1st layer stiffen then second layer)
Regards
It is a good question and your inexperience shows. Sorry.
First of all, there may be seam tapes. I can't recall. But if so, those are done separately.
Primary bonding is when bonds are done within chemical bonding windows. Most primary bonding windows are from 24-72 hours. At 24 hours, most 60 minute epoxies are workable and require some sandi g for follow on layers.
Secondary bonding is when bonds are not chemical. Using epoxy allows exceptionally good secondary bonding.
Primary bonding is always preferred. But sometimes really hard to do. I have done some of it, for the LB26, it will be nearly impossible to work wet on wet for a one or two person crew.
For the LB26, I don't recall the schedule off the top of my head. But it would be preferred to do it wet on wet or wet on green to achieve primary bonding for the whole layup. Wet on green works, but requires rolling the substrate with epoxy and then unrolling the fabric off tubes onto the hull. This requires marking the glass and some care, but works well. If you try to go too soon, you will lift the glass off the foam mid cure and this is quite bad.
I am very worried you are in over your head some now.
If you are trying to do it as an amateur, it might be easiest to plan to do secondary bonding because any error in the first layer of work can be fixed before you continue versus stacking a bunch of laminating errors.
I suggest you try to find a freelance laminator who has glassed foam hulls with epoxy. Interview them and ask them if they have rolled glass off a tube onto wetted hull and how they did it.
There are a LOT of shipyards in Ankara from what I've heard. Just find a competant lead man for the glass and fairing work.