XPS foam block from the hardware

[stoneburner]

EPS or XPS blocks source?

Crisp, I believe some canoe skins have used sheet cork between (over and under) fiberglass skins. This cork sandwich construction might make a good durable skin for your outrigger. A little XPS prep work with a Wartenberg pin roller after sanding with 100 grit should significantly improve bonding. Pre-seal the prepped XPS with a thin coat of epoxy (then sand smooth with 150 grit) before laminating the skins. You can pick up a 7-wheel Wartenberg pin roller for about $15-$20 on eBay (get th…

EPS or XPS blocks source?

This is what Wartenberg pinwheel roller perforations look like: The 7-row Wartenberg rollers (22 pins/wheel) I have make 44 perforations per square inch. Pinwheel diameter, pin-tip to pin-tip, is 1.125" (28.6 mm). Roller width is 1" (25.4 mm), pin-tip to pin-tip. Pin length is approx. 5-6 mm. Perforation hole diameter at the foam surface is approx. 1 mm. Space between perforation holes is approx. 4-5 mm. [Pin_Roller_600a] [XPS_Perf_6]