Yea I've noticed that...I tried a small test area with it...the small area I tested took a LOT more of the marine tex than I thought it would. Not sure I have enough on hand to complete the job now.
I have some fiber glass cloth on hand...how fine does the filler have to be that you use in the resin to make peanut butter? Can I cut up small/fine pieces from the 7.5 oz cloth I have and use that as filler for the resin?
Chopped Fibers is a Great Filler,... It provides both Bulk,+ Strength......
But,.... You still need some sort of Powder Fillers to keep the Resin from Draining from the Fibers.....
Cutting enough cloth would be hard to do. You can use fine sawdust, sand, talc, or most any powder or fine fiber. Not all of them make great putty, but they can work in a pinch.
"Peanut Butter" is thickened with fibers for strength. MarineTex does not have fibers and is not made to do what you want. Marinetex is for gap filling only.
You want that hull floor joint to be very strong so get some milled glass and go to town.
Purdueberry - I tried the coffee grinder thing with my 7.5oz cloth...cut the cloth into real small pieces then put it in the grinder. Didn't work too well. One it's so light it rises off the blade and two it tends to shred the fibers somewhat but then they would get wrapped around the blade.
So I could get some shredded fibers from it but could not get it to a powdered state.
I don't know...I've got a cheapo Wally World grinder...maybe a better grinder would do the trick.
i went to the local lumber yard - got some sawdust out of the bin.
mixed it with resin in a plastic bag -
then i cut the corner off the bag and used it like a frosting tool for cakes.
i made it thicker than peanut butter - sealed my floor to the hull this way. it worked great.
all the wood fibers are encapsulated with resin, and the scraps are as hard as a rock. Try that.
Mike