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Dave, I think you had too much filler in the glue. Everyone has a fixation on over thickening the epoxy. Let me quote from the West people: "While certain fillers will increase the density of epoxy, this does not correlate to higher physical properties or increased adhesion strength. Epoxy is...

Dave, A couple of things I thought of. When doing a full boat build in timber, epoxy and various cloths I have preferred West products. Usually buy 44-gallon drums of their sheathing resin. Then for gluing we add micro balloons to thicken to glue consistency. Advice: Don't over thicken...

Hi Dave, we'll have to stop meeting like this! Firstly congratulations on your well thought plan. I will make a couple of more contributions: I do not know the dimensions of your RIB deck brackets and how many holes for attachment. I looked at a lot of available ones on the internet and most...

Hi Dave, Like Frosty, I like to see the results of experiments. DONT give up on the casting for your project. You stated "the advantage of the tapped threads was that it was easier to ensure that they were perpendicular to the wood surface and would be easier to be precise in the location."...

Hi Dave, One little point I overlooked. When you are fixing a bracket etc using hex head machine screws into the female casting of epoxy, the flat or spring washer you put under the head of the machine screw etc, ensures the bolt down will lock down tight. But some fittings such as the sheet...

Steve, You appeared to have taken offence at what I said about through deck bolting. I concede I may have generalised a little too much. But I go back to the Erick Hiscock and Donald Street days and timber boat building using seasoned timbers, bronze and copper fastenings etc. Even L Francis...

Screw Mounting in Cored Deck. Hi Dave, Your assumptions about the 11/16” of thread in the epoxy is quite correct and very appropriate for the application. But let me expand on a few items: Firstly, I called them speed bits. Well, I think you guys call them spade bits. Bosh title theirs...

Screw Mounting in Cored Deck. Hi again Dave, I noted some suggested through bolting as being the best option. I totally disagree. Great in some applications but actually disastrous on the deck of boats. The one thing top boat builders avoid is through bolting on decks. Boat move and...

Screw Mounting in Cored Deck. Hi Dave, WD40 was never going to work. WD40 contains 60% Naphtha (petroleum); 25% Petroleum base oils; 10% Trimethyl Benzine; and other Isomers, plus the low vapour Hydrocarbons, mostly solvents which will attack and dissolve epoxy just as Acetone does. There are...

Hi dhays Guru, I am a life-long sailor on the Australian Coast. Along with over 50 years of sailing I have built many vessels. I see you have received numerous good ideas. But the following is by far the best way to fix fittings of any type to a deck. Particularly when the deck is cored...