Q&A – Are 1 to 1 (1:1) epoxy mixes OK for boatbuilding?

Most quality boatbuilding epoxy manufacturers have a structural boatbuilding product. They normally are “high solids” boatbuilding epoxies that have uneven resin to hardener ratios (2:1, 3:1, 4:1 or 5:1) which you have to add powder to make a glue or filleting mix The same companies often produce pregelled products that are mixed in a 1:1 […]

Q&A Are Screws and Fasteners Required in Epoxy/Wood construction?

One of the great leaps forward available to us when using epoxy is being able to eliminate fastenings (screws,nails, bolts etc) from the structure. Many builders now only use fasteners to temporarily hold things together while the glue sets up.The temporary fasteners are removed and can be re-used many times. Eliminating fastenings also speeds up […]

Q&A – Fast boat repairs with no fasteners.

Hole in Boat and More Fasteners in traditional construction are the ONLY way to go – whether metal or trunnel. But once moving over to glued construction there are certain advantages in eliminating the fasteners as far as possible. We’ve made a bit of a career of it over the last 20 years or so […]

Q&A Teak Decks and Sikaflex

There are two tricks to sikaflexing between strips. Use the Sika Primer – it improves the bond strength to the timber for a permanent job. You can get away without it often, but it changes the situation from a fairly strong bond to a hugely strong bond (you’ll know this if you have ever removed […]

Slideshows of the GIS Sailing Nicely

I have just realised what fun the slideshows on Flickr are. I already have photo sequences of the Goat Island Skiff stored there. Can you believe it has taken me this long to have a look! You do need broadband to get the best effect. Strong wind sequence including quite a bit of planing.Goat Island […]

Q&A Epoxy Preservatives that “Soak into” the wood. CPES, Everdure

  “Soaking” Epoxies – not so good Generally the thinners based products were a precursor to the full high solids epoxy catastrophe (and I mean that in the most positive sense). The most common in Oz is the dear old Epicraft Everdure which we all used to seal the insides and underdecks and often under […]

Q&A Preventing Rot – The Good, the Bad and the Fugly

This was as a response to the idea that one should chuck a handful of salt into interior areas of a boat to prevent rot. Not a good idea. The problem is that salt sucks moisture. So it will remain almost perpetually moist. Then on a warm day the moisture will evaporate. At night the […]

Q&A Epoxy Resin vs Polyester Resin for Wood

Should one fibreglass using epoxy or polyester resin over wood.  In this case it was to join the plywood panels of a stitch and glue boat. First, Woven fabric will give a smoother finish than chopped strand matt and is much stronger for the same weight.  It also requires less filling of the weave to […]

Q&A Epoxy vs Resorcinol Glues

This was in reference to a deck repair – what glue to use to apply teak planking to a plywood substrate. It makes general comparisons between the glues Epoxy is gap filling – so if there are gaps between the ply and the deck substructure the epoxy will have no problems. With a deck done […]

Can the GIS be Roofracked?

Well, it is light enough, but maybe have a close look at this series of photos from Simon Wein. Actually the pictures of the boat upside down on the roof makes it look very much like some of the Australian and NZ racing dinghies – like a Cherub or NS14. That’s my sailing background – […]

Finally – building photos for the Goat

During the recent Duck Flat Spring School (I was one of the instructors) a GIS was built by Paul and Chris – who are a pair of old school chums who have a long term plan of building something bigger to share the use of. During the class they built the hull, glued up the […]