Search found 13 matches

by B_Wurts
Wed Jan 19, 2022 5:51 pm
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Re: Monolith 2001: XLPE

I'm not sure the flex is ideal. I'll probably go lighter next time-maybe less fiberglass too. The lighter densities of XLPE from the supplier had much more flex than the 3" thickness. I'm surprised you didn't/don't have bonding/delam problems glassing XLPE. XLPE has low "surface energy.&q...
by B_Wurts
Wed Jan 19, 2022 5:32 pm
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Re: Monolith 2001: XLPE

Wow, that CNC shop looks professional! If the material doesn't absorb water or otherwise suffer from use without glassing, you could surf it as a slab and then refine it incrementally as you get real world feedback. It is an impressive shop. And the owner/machine programmer is very gifted. In addit...
by B_Wurts
Thu Jan 13, 2022 1:01 pm
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Re: Monolith 2001: XLPE

I had a meeting yesterday with a CNC shaper approx. 100 miles from my location. This was just a test cut on the fly to see how well his machine could cut complex contours, using a piece of XPS I brought along and cutting files I already have. I will use this cut for experimenting with cork skins und...
by B_Wurts
Sat Dec 11, 2021 8:17 pm
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Re: Monolith 2001: XLPE

Have you made any progress with this material? I’ve also bought some in the same density and man is it difficult to shape. My most effective tool so far is an angle grinder with a flap disc… Not yet. Will be a slow build/shape. Bought some 6-pcf EVA too (see previous post). Also waiting too see if ...
by B_Wurts
Sat Dec 11, 2021 8:08 pm
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Re: Monolith 2001: XLPE

Bought a 3” x 24” x 48” slab of 6-pcf EVA to play with too.
More UV tolerant but a lot more flex — somewhere between a boogie board and an inflated air mat.
A bit softer — so could be significantly more difficult to shape.
Promises to be an interesting/challenging experiment.
by B_Wurts
Wed Nov 03, 2021 1:01 pm
Forum: Your Wave
Topic: Tidal bore wave
Replies: 3
Views: 2508

Re: Tidal bore wave

You need to try the "Pororoca."
by B_Wurts
Tue Nov 02, 2021 5:50 pm
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Re: Monolith 2001: XLPE

Thanks UncleG.
I'll give Barge Cement a try.
by B_Wurts
Sat Oct 30, 2021 9:41 pm
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Re: Monolith 2001: XLPE

Interesting! How are you using XLPE as a mold for a paipo "Wood Press?" I have developed a technology for making blanks for channel bottom BBs/Paipos. XLPE should work well for building the blanks and prototypes. Just need to come up with a good adhesive that is strong enough to endure the...
by B_Wurts
Thu Oct 14, 2021 3:33 pm
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Re: Monolith 2001: XLPE

It is closed cell, "Cross-Linked Polyethylene" foam 6-pcf. I got it from an online foam supplier in Michigan.
The other more expensive foam I want to play with is 6-pcf "Mini-cell EVA" (more UV tolerant).
by B_Wurts
Mon Oct 11, 2021 7:31 pm
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Re: Monolith 2001: XLPE

At 6 pcf, the XLPE foam is lighter than balsa (8-14 pcf). The 6 pcf XLPE is fairly stiff with a little flex. It is more expensive than EPS for sure. The 6 pcf XLPE sample seemed to sand fairly well -- a bit better than the 6 pcf microcell EVA. I plan to try shaping by hand with coarse sandpaper, woo...
by B_Wurts
Thu Oct 07, 2021 3:14 am
Forum: Paipo Board Design & Building
Topic: Monolith 2001: XLPE
Replies: 19
Views: 3060

Monolith 2001: XLPE

Decided to try shaping a different material for BB/Paipo builds -- high density, cross-linked polyethylene foam. No glassing required. Should be lighter than wood and not too much heavier than stringerless foam with a heavy glassing schedule. Eliminating glassing should speed up the build/prototypin...
by B_Wurts
Fri Jul 09, 2021 12:12 pm
Forum: Paipo Board Design & Building
Topic: Nothing fancy
Replies: 2
Views: 2162

Re: Nothing fancy

A basic "Lord Board" with parallel rails for speed...
If it ain't broke, don't fix it.
by B_Wurts
Tue Jun 01, 2021 8:22 pm
Forum: Paipo Board Design & Building
Topic: New project... this time a Paipo
Replies: 34
Views: 5528

Re: New project... this time a Paipo

If you are only going to use one wood veneer, it would give better compressive strength on the deck. With wood veneers on both deck and bottom, you might not need stringers.
If you need a cork deck skin for impact absorption and traction, you could possibly add it over the deck's wood veneer.