ghostlymoron
Well-known member
David's isopon P40.
Would you fill a hole below water line with this?
- Thread starter ghostlymoron
- Start date
Tranona
Well-known member
No.
sailorman
Well-known member
& you accuse me of not using many words :applause:
i use this as i can scrounge small amounts from the boatyard
http://www.hempel.co.uk/en-GB/products/hempels-epoxy-filler-35250
i use this as i can scrounge small amounts from the boatyard
http://www.hempel.co.uk/en-GB/products/hempels-epoxy-filler-35250
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jwilson
Well-known member
Only very temporarily....
VicS
Well-known member
No . It only contains a relatively small amount of glass fibres
You dont say how big the hole is but the West System website has all the necessary info, how to guides and a video to guide you through the procedures for "repairing" a hole of any significant size.
http://www.westsystem.com/
An epoxy filler or putty would probably be adequate for a small (screw) hole
You dont say how big the hole is but the West System website has all the necessary info, how to guides and a video to guide you through the procedures for "repairing" a hole of any significant size.
http://www.westsystem.com/
An epoxy filler or putty would probably be adequate for a small (screw) hole
ghostlymoron
Well-known member
Filling hole from 2" through hull.
ghostlymoron
Well-known member
I wouldn't either but can't persuade my pal from doing so or offer him a valid whether should not except it's for cars.
PaulRainbow
Well-known member
Your pal is a bell end.
easton
Member
A 2" diameter hole ought to be tapered out to probably a 12" diameter hole, and filled with progressively larger fibreglass circles until it's the same thickness as the original hull, squegeeing out excess resin, then finished on the outside with gelcoat, faired as appropriate and antifouled.
At least that's roughly what I would (pay someone else to) do...
The effects could be pretty spectacular (or deadly) as the disc of P40 pops out and the boat develops an indoor fountain, then swimming pool and then distinctive lean...
At least that's roughly what I would (pay someone else to) do...
The effects could be pretty spectacular (or deadly) as the disc of P40 pops out and the boat develops an indoor fountain, then swimming pool and then distinctive lean...
VicS
Well-known member
Repairing a 2" hole is a major job .
As suggested it involves chamfering the edges at 12:1 which produces quite a large area to then fill with layers of glass cloth and resin.
However not by starting with the smallest piece, as easton suggests, followed by increasingly larger pieces but by starting with the largest piece, equal to the size of the whole chamfered area, followed by pieces of progressively decreasing size so that the last piece is the size of the original hole.
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easton
Member
Good point VicS, biggest bit first. So progressively smaller bits of glass.
A
A
sailorman
Well-known member
No smallest forst, then each progressibe layer is encapsulated with no glass fibres sticking out to minimise "wicking "
VicS
Well-known member
NO wrong. Read the guide on the West System website
sailorman
Well-known member
Yes right, from a fellow who professionally mended FG boats to an exceptionally high standard. You are reading theory, he did it before Gougeon Bros wrote their book.
Just think about it, not read about it. The last laminate encapsulate all others
ripvan1
New member
I don't get it, how can you fill/glass largest first then get to the smaller areas ?
sailorman
Well-known member
you are filling a volcano
VicS
Well-known member
The first piece covers the whole of the prepared area, like laying it in a saucer (with a hole in the middle). Each subsequent piece is smaller until you have nearly filled the saucer level. The final piece being the size of the original hole
You stop just short of filling the saucer level in fact to allow for shaping a fairing
By bonding the patch into place in a large-to-small-piece sequence, you will eliminate the possibility of sanding through any of the cloth layers when fairing the surface.
Read the West guide on Fibreglass boat repair and maintenance.
Tranona
Well-known member
Simple question. simple answer. Only required a one word answer - no request for an explanation, nor advice on what should be used.
Your answer, in this case is too expansive, but of little use as you don't explain why!
It always pays to read the question.
sailorman
Well-known member
whats it like up there
Tranona
Well-known member
Fine. Thanks for asking.
