Liquid?nails in a caulk gun is used to bond this foam board to basement
foundations on cinder block walls.Joe Cruz
cruzj12 at frontiernet.net
KR1.5 N3151K
KR2S builder
On Friday, November 28, 2014 11:37 AM, Oscar Zuniga via KRnet wrote:
Adam wrote-
>? ? Thank you for the detailed respo
Oscar
Thank you for the detailed response. this really helps make my final
judgment.
Just one question. Do you need 100% coverage?( excluding area near sanding )?
or are you suggesting ex. 75% coverage?
> On Nov 11, 2014, at 9:16 PM, Oscar Zuniga via KRnet
> wrote:
>
> Adam; I used pink O
Adam wrote-
>Thank you for the detailed response. this really helps make my final
> judgment.
> Just one question. Do you need 100% coverage?( excluding area near sanding )?
> or are you suggesting ex. 75% coverage?
I can't imagine why you would need 100% coverage in order to bond the pieces
Adam; I used pink Owens-Corning 'Foamular' extruded polystyrene board (but Dow
Styrofoam is the same thing). I have used 2-part "five minute" epoxy to bond
the board when I want a really good bond. Spread it with a squeegee but don't
get it anywhere near an edge or anyplace that you'll be sand
Hi Adam
I used 5 minute polyurethane glue with blue Styrofoam on mine. The advantage
is it sets quickly so you can get on with things.
The downside is that it foams up as it sets so you need to ensure the spars
are well restrained so it does not distort.
Hung the Jab 3300 engine on a temporary mo
riginal Message-
From: Adam via KRnet
To: KRnet
Sent: Tue, Nov 11, 2014 4:39 am
Subject: KR> Polystyrene bonding
I know this question has been answered before, but I'm having trouble accessing
the archives from my iPhone and apple notebook.
What is suggested or most commonly used t
I know this question has been answered before, but I'm having trouble accessing
the archives from my iPhone and apple notebook.
What is suggested or most commonly used to bind polystyrene. I'm willing to
spend to save weight but would rather not sacrifice safety in any way. I'm
setting up to st
...@telkomsa.net
P.S: checkout www.whisperaircraft.com
- Original Message -
From: "Stephen Jacobs"
To: "'KRnet'"
Sent: Tuesday, September 07, 2004 11:04 AM
Subject: RE: KR> polystyrene & other foams
> Dene
>
> Are you aware that Sagex in Jo
Stephen,and all.Apologies ! by 24 density I meant 24 ounces / cubic ft.Here the
foam is sold as "Sagex" a trade name.I bought planks 1 inch thick and 12 ins
wide,I check weighed all the planks and found three were 12 density which the
factory replaced for me.No I did not use a micro slurry on t
Eric Evezard wrote:
>The book I had stated"never ever glass over micro"---enough said.!
I don't know which book you are referring to, but that doesn't apply to when
you put fiberglass on top of foam. In that case, you NEED to squeegee a
runny slurry mixture of epoxy and micro into the pores of t
If you put fiberglass over foam without first squeegeeing in SOMETHING,
the fiberglass will not stay attached to the foam for long...
With respect - I am not convinced the above is correct when it comes to
polystyrene (Styrofoam?).
This is something I have been tryin
With respect - I am not convinced the above is correct when it comes to
polystyrene (Styrofoam?).
---
Stev,
As I also build large model aircraft,
We use a layer of glass and epoxy straight onto the foam, then press and let
dry the balsa or veneer and come up with a very very strong fini
We use a layer of glass and epoxy straight onto the foam
++
There you go now Phil, thank you.
In the spirit of the purpose of this group, it would be great to better
understand the differences /pro's and con's (and potential) of these two
core materials as may benefit KR builders
!
Pat in Vermont
- Original Message -
From: "Stephen Jacobs"
To: "'KRnet'"
Sent: Thursday, September 09, 2004 12:50 AM
Subject: RE: KR> polystyrene
>
> ___
> to UNsubscribe from KRnet, send a message to krnet
I don't jump into very many discussions anymore, but, I just can't
resist when the answers are already well known and a little study will
reveal them.
OK, there is no need to reinvent the wheel. Rutan has already done that
for you. The book "Moldless Composite Sandwich Homebuilt Aircraft
Con
Steve Jacobs wrote:
> With respect - I am not convinced the above is correct when it comes to
> polystyrene (Styrofoam?).
You're right. I was talking about urethane foam. And it all depends on the
process. I suppose if you were to lay dry fiberglass onto the wing and pour
epoxy all over it, yo
Stephen,If my memory serves me correctly,all the early KRs in SA were built
using polystyrene foam.About 30 years ago an article appeared in Wings Mag.(SA)
describing the KR as "the amazing little plane built from cooler boxes and
piano hinges"It was in all a very inspiring article.I think polys
I used 24 density polystyrene foam.
++
Dankie Eric
My first KR connection was via Peter Eich in the early 80's - he put me
onto Sakkie Halgreen - I watched UKU being built, but he was already
using poly-U. There was one other (KR1) flying at the old BaraG - owned
by a guy ca
FYI:
24 kg/m3 runs out to about 1.5 Lbs/ft3
Scott...
>
> I presume the 24 is kg/m3? - what is that in lbs/ft3?
>
> Groete
> Steve J
>
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
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FYI:
24 kg/m3 runs out to about 1.5 Lbs/ft3
+
Thank you Scott - I suspect that a 1.5 Lbs/ft3 would be a relatively
fragile foam.
Take care
Steve J
Poly U that is used is 2#/'3, Virg
On Sun, 5 Sep 2004 20:09:00 +0200 "Stephen Jacobs"
writes:
> FYI:
>
> 24 kg/m3 runs out to about 1.5 Lbs/ft3
>
> +
>
> Thank you Scott - I suspect that a 1.5 Lbs/ft3 would be a
> relatively
> fragile foam.
>
> Take care
> Steve J
>
Hi guys
This discussion has got me wondering about different types of foams. I was
advised to use the 24KG/M3 polystyrene foam nine years ago when I started
building and it has served me well so far. I am now getting ready to build
the outer wings in which there will be aluminuim fuel tanks. Althou
Den Collett wrote:
> The only polyurethane foam I have seen is the stuff used in the thermal
> insulation business. It can be purchased in sheet form of various
> thicknesses or as a two-pack that is mixed and poured into whatever needs
to
> be insulated. The sheet is very light and ridgid and san
Dene,
I just tried the wing tank site http://www.krnet.org/wingtank/ and it loaded
up fine for me. I secured my tanks by installing a piece of 1" aluminum
angle from the front spar to the rear spar for the tank to sit on. Put one
at each end of the tank. The tank should sit loose on the two angle
r
Dene
Are you aware that Sagex in Johannesburg also supplies polyurethane -
they carry a range thicknesses from 8mm to 300mm (2440 x 1220). They
only keep 32 and 35kg/m3 in stock - heavier on special order.
I deal with Charmaine van Biljon
[charmaine.vanbil...@owenscorning.co.za] - ask her to fax
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