KR> Bubbles in Epoxy resin

Serge, The usual cause of small bubbles in the epoxy is rapid stirring the resin and hardener. For most wet lay up work this is not a problem. You will be smoothing out with a squeegee and that will get rid of the bubbles. In the certified industry we put the lay up under vacuum and that

KR> Bubbles in Epoxy resin

- 2006 - KR Gathering There is a time for building and a time for FLYING and the time for building is OVER. Daniel R. Heath - Lexington, SC ---Original Message--- From: Serge VIDAL List-Post: krnet@list.krnet.org Date: 04/24/06 05:51:04 To: KRnet Subject: KR> Bubbles in Epoxy resin Last t

KR> Bubbles in Epoxy resin

Serge Vidal wrote: > Last time I mixed some Epoxy, I noticed that there were > plenty tiny bubbles in it. I don't know what epoxy you use but I usualy have the same "problem" while mixing Rand A and B epoxy. If I pour the resin too fast or stir the mixture too vigorously I get air bubbles in

KR> Bubbles in Epoxy resin

The air will not be a problem, just keep mixing to a uniform colour, when you add flox or M/balloons, or even spread it on the glass cloth, the bobbles will disappear. Phillip Matheson 0408665880 (cell) VHPKR Australia. mathes...@dodo.com.au NEW WEB PAGE www.philskr2.50megs.com

KR> Bubbles in Epoxy resin

Last time I mixed some Epoxy, I notices that there were plenty tiny bubbles in it. Now, I never had that before. So, I'm just curious. What explains that? Serge Vidal KR2 "Kilimanjaro Cloud" Paris, France

KR> Bubbles

Net Heads, I have acquired a few bubbles under the fiberglass skin on my stub wings.Apparently these are some sort of gas bubble which has caused the phenomenon. The largest one is about 1 1/2 inch wide and 2 inches long. These bubbles were fairly hard till I drilled a pin size hole in them to

KR> Bubbles

Mark, Just a suggestion... Would it be better to cut the bubble off, grade it's sides all around and do a fresh small layup on it. Just like you would have had to do it you were repairing a puncture? Regards, Ameet --- Mark Jones wrote: > Net Heads, > I have acquired a few

KR> Bubbles

r...@mylist.net> Sent: Sunday, September 25, 2005 9:22 AM Subject: Re: KR> Bubbles > Mark, > > Just a suggestion... Would it be better to cut the > bubble off, grade it's sides all around and do a fresh > small layup on it. Just like you would have had to do > it

KR> Bubbles

Bubbles are sometimes formed by moisture under the skin that cooks and the gas expands stretching the plastic skin. Another cause is the use of spray foam, which sits un-cured encapsulated by cured foam and glass, until one day it gets enough heat to cure and at that point it expands, creating

KR> Bubbles

>I have acquired a few bubbles under the fiberglass skin on my stub >wings.Apparently these are some sort of gas bubble which has caused the >phenomenon. The largest one is about 1 1/2 inch wide and 2 inches long. Drill a tiny hole at each end of the bubble, mix some wet micro, insert it in one

KR> Bubbles

t> Sent: Sunday, September 25, 2005 7:21 AM Subject: KR> Bubbles > Net Heads, > I have acquired a few bubbles under the fiberglass skin on my stub > wings.Apparently these are some sort of gas bubble which has caused the > phenomenon. The largest one is about 1 1/2 inch wide and

KR> Bubbles

"Don't heat them you will get a bigger bubble...". I do agree with Lee that heating may get you bigger bubbles. I must add that in the case of uncured foam, it's like having little time bombs that will eventually all cure when exposed to enough heat or sunlight. The problem is that they will

KR> Bubbles

I am not sure what has caused the bubbles. The areas which have the bubbles do not have any spray foam so that is ruled out. I only had two bubbles when I was at MT Vernon but a week later a few more tiny ones popped up? These are on my stub wings and a couple on my front deck top. There is no

Réf. : RE: KR> Bubbles

;kr...@mylist.net> cc :(ccc : Serge VIDAL/DNSA/SAGEM) Objet : RE: KR> Bubbles I am not sure what has caused the bubbles. The areas which have the bubbles do not have any spray foam so that is ruled out. I only had two bubbles when I was at MT Vernon but a week later a

Re: Réf. : RE: KR> Bubbles

I know that trapped moisture that could come from wet sanding could do something similar. Orma Southfield, MI KR-2 N110LR 1984 See Tweety at http://www.kr-2.aviation-mechanics.com See other KR spces at www.kr-2.aviation-mechanics.com/krinfo.htm

KR>Bubbles

Netters, Does anyone knows how do you prevent bubbles in your first layer of carbon? I am making a carbon fiber spinner with a clear epoxy surface coat and when I pull the spinner out of the mold I am greeted with bubbles trapped between the weave, how can I prevent these. If I was painting it, it

KR>Bubbles

George wrote: > Does anyone knows how do you prevent bubbles in your first layer of > carbon? I am making a carbon fiber spinner with a clear epoxy surface coat > and when I pull the spinner out of the mold I am greeted with bubbles > trapped between the weave, how can I prevent these. Vacuum

KR>Bubbles

if you place your cloth on a piece fo heavy visquine plastic, pour on resin, cover with another piece of plastic, the use a puddy squigy to work in the resin till no dry areas remain, removfe from the plastic and install into mold and sqegggy firmly, remove the last piece of plastic after cured

KR>Bubbles

if you place your cloth on a piece fo heavy visquine plastic, pour on resin, cover with another piece of plastic, the use a puddy squigy to work in the resin till no dry areas remain, removfe from the plastic and install into mold and sqegggy firmly, remove the last piece of plastic

KR>Bubbles

Thanks guys, for all suggestions and hints with my bubble problem. Also I received an email from the guy who is not on the KR-net list. He in fact knew that I am using wax for mold release and I have the feeling that he is more than right about my attempts in composite layout. While his website

KR>Bubbles

I'd recommend you replace the carbon with S2 glass or E-glass; however, your problem is easily fixed with the additional application of "extra heavy hold hair spray" (aerosol type) used in the mold. Hair spray cheap substitute for the traditional PVA mold release. Remove the hair spray with warm