Hi List First a very happy and healthy 2007 with lots of projects and launches Second I see allot of people having problems with laying up several layers of...
I recently asked if it would be safe to leave my aeropoxy out with pumps on it and it seemed that it would not be good... I could just use the pumps then...
I hope someone with a chemistry background is able to address this questions (or ask the question of the suppliers). From what I've heard, the problem is slow...
Has anyone ever seen a reduction in strength or are we just worrying about the color change? I've never noticed any loss of strength. Paul ... From:...
Very good observation, what you described is the truth in the matter. The combination of humidity and air is what causes the Hardener to oxidize. As Keep has...
I talked with PTM&W about the oxidized hardener also, their reply was the same. This oxidation "SHOULD" not have any adverse effects in mechanical properties....
Welcome.-RK http://groups.yahoo.com/group/GoWhereNoManHasGoneBeforeInAWingedSpaceship __________________________________________________ Do You Yahoo!? Tired...
I was a member for a while, then bailed. Pretty much a waste of time. Lynn B. ... http://groups.yahoo.com/group/GoWhereNoManHasGoneBeforeInAWingedSpaces hip...
Same here. His point of the group is to "discuss" the validity of a super heavy winged spaceship using momentum and a SSTO design. He completely ignores basic...
It is important to realize that most Mylar's are meant for room temperature cures. If you are using the Mylar's at elevated temperatures they MUST be treated...
Mick- Not to be contradictory, but above what point do you consider the temperatures "elevated"? I have used mylar upto 150°ish and had no problem at all with...
A short while ago, there was some debate over which epoxies were more suitable for use in fin-tube joints and as laminating epoxies in airframes, especially...
Tom, that's great information. It's good to quantify things rather than just to go along with the conventional wisdom. One question. Did you happen to...
Tom, Thanks for the thoughtful response--shedding more light than heat is a refreshing alternative. Other aspects which have been mentioned before, but might...
Tom, Thanks for the thoughtful response--shedding more light than heat is a refreshing alternative. Other aspects which have been mentioned before, but might...
Hi, Will a paper airframe make a satisfactory form for a fiberglass airframe, is is metal that much better? -- Bruce E. Harris, MSgt, USAF, ret. TRA #10564 L2 ...
Hi John, Are you aware of any actual recorded temperatures from laying in the sun? And what ambient temperatures existed at the time of observation? Tom ...
Greg From experience I can tell you that after an 8 hour oven cure of a Bisphenol-A resin/CF composite at 121 C (250 F), Mylar(R) without a release agent is...
Mick, I saved this posting for when I was going to begin my first layup, which is now... I'm about to layup several sizes of CF sleeves on phenolic motor mount...
The spiral grooves are usually mostly filled with the wax release I use but even if it wasnt, the mylar isnt thin enough to let those through onto the inside...
Tom. No I am not--except what I read--sometimes spend some time on marine sites on acct of the large amt of FG used in the industry--they report anectotally...
Interesting point. Worth noting is that at least one altimeter out there records in-flight temperature data - the RocketMotion MissionControl. It'd only be...
Hi Craig, Your question got me to think of the possibility of actually filling the grooves and just go with mold release and forget the 0.005" Mylar step all...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
