Re: [bolger] Plywood Again???
- Hi Mike -
IF you search "UltraPly," you'll find a couple of threads in the various yahoogroups.
A couple of folks on the Michalak Yahoo group (they're probably on this group, too) have built with UltraPly and have reported good results/longevity.
I'm currently building Michalak's AF3 with the stuff. It's very pleasant to work with -- cuts nice, no voids, almost no sanding required for finishing. It passed the "throw some pieces in the dishwasher for a week and see what happens" test. Some people have expressed concerns about the video at the product's web site where a flooring installer scores a sheet with a utility knife and snaps the piece right along the score line. The guy in the video must be mighty strong, because I have been unable to replicate this. After repeated scoring with as much pressure as I could muster, I was able to bend the sheet through 2 plies, but the bottom ply splintered. I got essentially the same results with a regular lumberyard sheet of 1/4 inch ply.
You can check out my AF3 project at http://webpages.charter.net/cassidy1
---- mike <mikearedmond@...> wrote:
> Hi everybody an a happy New Year thrown in there also,,,Must be the
> Scrooge in me, taking over my boat building urges...been chequing some
> posts on the internet concerning Ultraply,,some kind of supposed to be
> good quality underlay plywood.(Still have to find out if it is
> available in Canada ei specifically Edmonton area).Has anyone built a
> boat with this stuff amonsght all of you fellows,ei;also awfull curious
> about MDO...Mike
- That's exactly what I did. I don't know how thick their skins are; but If I
were in a position to order a boat build that way I'd insist on a filling of
the slots at leats with more foam.
I really don't claim or want to argue my point beyond the fact that I looked
at it in a very amateurish way; but decided I didn't trust this method; or
voids and gaps between skin sheets in a composite.
Now no matter how wrong I might be; I'm never going to be particular happy
in a boat that has this issue; so I avoid it.
On Jan 8, 2008 11:31 PM, Stefan Probst <email@example.com>
> --- "Hajo Smulders" <hajosmulders@...> wrote:[Non-text portions of this message have been removed]
> > Slots were probably up to an half an inch wide in a 2 inch piece
> > of foam at the 'open side' of the curve. These were gaps; not voids.
> Something like on
> under the headline "Wide foam sheet planking"?
> Seems to be ok there.