Reduce weight with hollow xps board?

[stoneburner]

Perhaps replace EPS with XPS and interconnect the chambers — if there is enough bonding surface area.

Fiberglass versus Epoxy performance

You can turn any density foam into 0.75lb or less with very little effort. Don’t have a formula, just a router with bit, two turn tables and a microphone. [image]

Fiberglass versus Epoxy performance

Rout from bottom and try not to go through deck. Leave 5-8mm. perfect job for a cnc machine versus me. First pic is a blank I made in 1998 or 99. Open cell eps 1.8 lb density. Almost threw it away dozens of times over the years. Totally was belly laughing at what the open cell beads do to you and your shop when you cut it. Blast from the past. Should have taken a pic of the havoc. Still better than PU of the day though. Second pic to answer your second question. Hardwood planks. Tried this wit…

Fiberglass versus Epoxy performance

gortex vents from PeteC on certain boards for certain people.  This one gets a vent. 1 lb eps 9’5" x 29"x 4 1/14"     [image]

Fiberglass versus Epoxy performance

Sorry huck, it is not if someone asks, it is most everyone asks. Very few buy surfboards off the rack as informed buyers. Just think back to your first board you bought. I wouldn’t expect anything else either and don’t think badly of it. A simple explanation fixes it and a cellular level discussion is not necessary or needed. Meanwhile, back in the barnyard, I mean backyard.   [image]