A non-EPS materials question…
I know Greg’s mentioned it before but does anyone know how this compares to Corecell or DiviCel as a sandwich core or as stringer material inplace of Divi or XPS?
It’s been on sale for awhile now and the counter folks said it’s just like Corecel…
but… I’m a little skeptical
I’ve seen it on sale at Fiberglass Supply…
Anyone actually build a board or reinforced a board not a boat with it?
i have a sample thats high density…stiff as rock and just as heavy…and evidently very expensive…the common PVC foams are actually mixtures of pu and pvc…i have corecell too and that stuff is much stronger than dcell…running a blade thru cc is next to impossible…airex is very ductile in comparison to everything else
suckfully, all are expensive and not easy to get in small q’s
cheers
It’s just expensive high-density PU foam. Used mostly for tooling.
Well Fiberglass Hawaii here on oahu (probably won’t be there next time I’m there) has it on sale cheaper than Corecell in 1/4" and 1/2" thicknesses…
Would it be a good replacement for solid balsa rails?
you know cut out the rocker profile like Bert did in his thread with Dcell and epoxy bag it to the outside of your outline in 1lb EPS as a stiff perimeter rail?
If I can find a reasonable way to avoid having to build out solid balsa rails I will…
yeah that would be an excellent application…like Greg and Airframe’s blank…no fussing with balsa sheets! Proly shapes nicely too…
cheers
I took a look at the perimeter stringer blank at Cerritos. It has white PU foam on the rails. The density seemed light. So you might want to ask Ken or Greg where to get that white PU foam. Because that’s what Last-a-Foam is — but it’s not white.
I also checked out a blank at Cerritos made from the 3 lb. EPS. Now we are talking. This is something you should look into for the rails. It is very dense and stiff, but it seemed like you could just take straight strips and just flex them into place. I don’t know for sure — maybe Ken or Greg could chime in here.
I’ve received several samples of Last-A-Foam #FR-7106 (6 lb density) and #FR-7108 (8 lb density) - it is available in 4’X8’ sheets in thicknesses from 1/8" to 6" and in densities from 4 - 20 lbs/cu ft. The manufacturer doesn’t want to deal with small time surfboard guys.
They also makes another rigid polyurethane foam that is available in sheets. The Southern California distributor for the polyurethane foam sheets (FR-3700 series in 4, 4.5,5 and 6 lb densities) will be Plastic Materials, Inc 1-800-488-6050.
For small quantities of Last-A-Foam try Aircraft Spruce, Fiberglass Hawaii, or Fiberglass Supply. A 24" X 96" X 1/4" sheet in 4.5 lb density is something like 23.00.
It appears to be suitable as a composite sandwich core material for vac bagging over EPS and is in the neighborhood pricewise with balsa.
FWIW I checked pricing on Last-A-Foam in 6" thick sheets as possible blank material… a 4’ X 8’ sheet of 4 lb density is 440.00. I haven’t priced the FR-3700 series foam yet.
Ironically, even though the manufacturer shows up on a Google link in this and other threads, they don’t want a direct link to their website posted by me. They are not able to handle the volume of inquiries since Clark Foam shut down. I have edited this post accordingly.
I have been trying to find a post and I think it was by oneula about their friend being a distributor of a white PVC foam in Hawaii. I remember looking at the company’s website and and seeing that they were located in Colorado and would ship small quantities. They were selling the PVC foam in strips. Does anyone know what I am referring to?