Monolith 2001: XLPE

What works and what doesn't. Share design ideas, references and contacts for paipo board builders.
User avatar
bgreen
Big Wave Charger
Posts: 1252
Joined: Fri Aug 19, 2011 5:17 pm
City: Brisbane
State or Province: Qld
Country: Oz
Contact:

Re: Monolith 2001: XLPE

#41

Unread post by bgreen »

Thanks Bill.

It only needs to last a few days. I wasn't thinking of sandwich as all this needs to fit into a suitcase.

Where do you buy your XLPE? My searches seem to only identify cable suppliers.
B_Wurts
Big Wave Charger
Posts: 46
Joined: Tue Jun 01, 2021 12:29 pm
City: Princeton
State or Province: KY
Country: USA
Interests: Bodyboard and kneeboard design

Re: Monolith 2001: XLPE

#42

Unread post by B_Wurts »

bgreen wrote: Fri Jan 13, 2023 2:14 am Thanks Bill.

It only needs to last a few days. I wasn't thinking of sandwich as all this needs to fit into a suitcase.

Where do you buy your XLPE? My searches seem to only identify cable suppliers.
I get my XLPE in the US from the Foam Factory in Macomb, Michigan.
For short-term, XPS housing insulation (DuPont & Owens-Corning) with decent minimum compressive strength might be a good substitute for divinycell. XPS housing insulation has very low water absorption and is light.
Made a quick body board for the grandkids from the lowest density housing XPS insulation sheets — to my surprise it is still intact.
You can bond XPS effectively to other material surfaces with 3M 78 spray adhesive.
Found some divinycell data at this link;
http://www-eng.lbl.gov/~ecanderssen/Com ... _Man_M.pdf
User avatar
bgreen
Big Wave Charger
Posts: 1252
Joined: Fri Aug 19, 2011 5:17 pm
City: Brisbane
State or Province: Qld
Country: Oz
Contact:

Re: Monolith 2001: XLPE

#43

Unread post by bgreen »

Thanks. I'm looking into XPS.
B_Wurts
Big Wave Charger
Posts: 46
Joined: Tue Jun 01, 2021 12:29 pm
City: Princeton
State or Province: KY
Country: USA
Interests: Bodyboard and kneeboard design

Re: Monolith 2001: XLPE

#44

Unread post by B_Wurts »

Important tip for XLPE boards.
Don't lean them up against something in direct sun. The side that heats up warps toward the cool/shaded side.
Found that if I leaned the opposite (cooler/shaded) side out in the sun for 20-30 min in the same sun heat, it warped back.
Then I placed the board on a cool flat floor with a rectangular tub/container of water on top until the whole board cooled to room temp -- back to original flatness after.
B_Wurts
Big Wave Charger
Posts: 46
Joined: Tue Jun 01, 2021 12:29 pm
City: Princeton
State or Province: KY
Country: USA
Interests: Bodyboard and kneeboard design

Re: Monolith 2001: XLPE

#45

Unread post by B_Wurts »

Chad Stickney riding my 42” channel-tail prototype @wacosurf_tx with @ebodyboarding, #texastubetour
Photo taken by Tony Prince at FB link below.
https://www.facebook.com/profile.php?id=1729590105
(Video yet to come if I can figure out how to post it.)
Attachments
IMG_6432.jpeg
Last edited by B_Wurts on Sat Oct 28, 2023 2:42 pm, edited 1 time in total.
B_Wurts
Big Wave Charger
Posts: 46
Joined: Tue Jun 01, 2021 12:29 pm
City: Princeton
State or Province: KY
Country: USA
Interests: Bodyboard and kneeboard design

Re: Monolith 2001: XLPE

#46

Unread post by B_Wurts »

Second Wave
(Click link at bottom. Click first play arrow once, then the white play arrow on the black screen next.)
Chad Stickney is riding my 42” Channel-Tail prototype, moving down the line under the fluid awning.
@wacosurf_tx, with @ebodyboarding, #texastubetour
Video filmed by Vicki Reale
https://vimeo.com/876106440
B_Wurts
Big Wave Charger
Posts: 46
Joined: Tue Jun 01, 2021 12:29 pm
City: Princeton
State or Province: KY
Country: USA
Interests: Bodyboard and kneeboard design

Re: Monolith 2001: XLPE

#47

Unread post by B_Wurts »

This is a CAD figure for the 48” Channel-Tail model. Channel size is the same in the 42” model ridden in the video previously linked and the photo above — board planshape is similar. The bottom surface inside the tail channel provides indirect rocker. The tail channel functions as a low-drag, finless fin.
Attachments
48_Tail-Channel_Chamfer_4x6.jpg
B_Wurts
Big Wave Charger
Posts: 46
Joined: Tue Jun 01, 2021 12:29 pm
City: Princeton
State or Province: KY
Country: USA
Interests: Bodyboard and kneeboard design

Re: Monolith 2001: XLPE

#48

Unread post by B_Wurts »

From Chad Stickney’s helmet cam while riding my 42-inch, channel-tail prototype at Waco Surf.

https://vimeo.com/889928158?share=copy
Post Reply

Who is online

Users browsing this forum: No registered users and 0 guests