Filler options for fairing inside the hull

[Tupaia]

Originally Posted by Rucksta

For larger volumes I've used off cuts and scraps of foam core run through the garden mulcher in much the same way you describe using wood shavings.

This is a cheap and easy way to bulk fill voids. Lay some chopped strand or rovings over the final fill and wet out with resin. Finish with gelcoat (Top-coat / Flow coat that includes wax in styrene) to give a non sticky easy to clean finish.


Have you thought about including a flushing connection at the very bottom also aids cleaning if you pick up some lousy water.

[coopec43]

Originally Posted by GILow

Very different setup to mine. My hull and cabin sole form the tanks.

Quite different that is for sure!

My cabin sole is carpeted ply-board in X10 pieces with finger pulls so I can raise a particular section to get at batteries, bilge pumps, blower, water tanks, tool/parts bins etc.

So the tanks/storage bins are mounted independently under the floorboards.

[RaymondR]

Bridge over the trench and pipes with high density Urethane construction foam sheeting then glass over it.

[GILow]

Originally Posted by RaymondR

Bridge over the trench and pipes with high density Urethane construction foam sheeting then glass over it.

I've lost track of the various chemistries, is urethane foam soluble in petrol or diesel? In theory such liquids would never come.close to that area but I want to cater for the worst.

[GILow]

Originally Posted by Tupaia

This is a cheap and easy way to bulk fill voids. Lay some chopped strand or rovings over the final fill and wet out with resin. Finish with gelcoat (Top-coat / Flow coat that includes wax in styrene) to give a non sticky easy to clean finish.


Have you thought about including a flushing connection at the very bottom also aids cleaning if you pick up some lousy water.

The flushing idea is interesting but I'm.having trouble picturing how it might work with all the baffles. The design has access points to hand scrub all surfaces if needed. A more manual approach.

[GILow]

Originally Posted by GILow

I've lost track of the various chemistries, is urethane foam soluble in petrol or diesel? In theory such liquids would never come.close to that area but I want to cater for the worst.

Just checked, looks like it is non soluble. I'll check out some suppliers tomorrow.

[coopec43]

Originally Posted by GILow

Just checked, looks like it is non soluble. I'll check out some suppliers tomorrow.

What dissolves urethane foam?

Acetone is a solvent that dissolves uncured polyurethane foam and can be used to clean up foam before it cures.28 Nov 2018

https://www.familyhandyman.com/artic...ve-spray-foam/


Is polyurethane resistant to fuel?

It has exceptional resistance to most gasoline, oils, kerosene, and other petroleum-based chemicals, making PU tubing and hose an ideal choice for fuel lines (although additives in today's gasoline and petroleum products warrant field testing).16 June 2008