Gray, Thanks for the pictorial HOW TO really looks good. Mick...
10629
mickmkelly
May 6, 2012 1:35 pm
Gray, you have it done to a science now, Great job!! Mick...
10630
jimjarvis50
May 8, 2012 5:57 pm
When people ask if lining up the weave was intentional, just nod a little and smile knowingly. Jim...
10631
mickmkelly
May 9, 2012 1:53 am
I believe everyone has finally got on to the art of composites. The only thing you need is "PATIENCES", there is no instant gratification with composites for...
10632
Gray
graydontranq...
May 14, 2012 3:58 pm
Activity on Composite Rocketry yahoogroups peaked in January 2007 with a total of 654 messages!!! Searching for information on appropriate epoxies for min dia...
10633
Gray
graydontranq...
May 17, 2012 4:40 pm
To Mike Bennett and all re: centering rings. This is a very late response to an old question...... Please refer to new photo album entitled "G10 Rings" to be...
10634
sam smith
a_prince_for...
May 26, 2012 2:47 am
hey guys ive cut a chunk of a old file with a cutoff wheel and used it for my tool on a circle cutter works great to hole saw g-10 have to keep a good edge on...
10635
sam smith
a_prince_for...
May 26, 2012 2:53 am
just wondering vinyl ester resin has a high tg is it strong enough for what were trying to do??? Gerry ________________________________ From: Gray...
10636
mickmkelly
May 26, 2012 1:00 pm
Hi Gerry, Vinyl ester's have a Tg of around 125°F, motor temperatures can reach and exceed 200°F, so unless you are using low power motors not a good idea. ...
10637
mickmkelly
May 26, 2012 1:12 pm
Just an idea for those holding launches you may want to use the Calendar to announce your meet. The new calender is laid out by the half hour or so. Mick...
10638
sam smith
a_prince_for...
May 27, 2012 2:44 pm
mick i thought the tg was around 250f i didnt know. what i would like to know is which binder to use for mmt or ex motor casings. ty for any info Gerry...
10639
mickmkelly
May 28, 2012 1:39 pm
Aeropoxy is what a lot of use use, it has a TG of 200, wiyh about 225F with a post cure from a heating oven. They make different hardeners so make sure to get...
10640
Denis
denismeans
Jun 7, 2012 5:48 pm
Hello all. Was digging through your archives looking for some answers and I found some but not all. So, I'm hoping the FNG questions aren't that annoying. I'm...
10641
sam smith
a_prince_for...
Jun 9, 2012 2:53 am
i have aeropoxy good product. i live in michigan so west systems is always a good one to. i have been making tubes,nosecones and fin cans for awhile just...
10642
Gray
graydontranq...
Jun 9, 2012 4:25 am
IMHO phenolic mmt works fine with a little JB Weld holding things together at the nozzle end of the motor where it gets the hottest. Heat related issues crop...
10643
Lawrence Lobdell Jr.
lalobdelljr
Jun 9, 2012 4:41 am
I have a question - how long does epoxy keep? I cleaned my shelves and found some opened (2008?) Aeropoxy laminating epoxy: PR-2032 and PH-3660. The cans had...
10644
mickmkelly
Jun 9, 2012 10:29 am
Welcome Denis, I am glad you found your way to our forum. This is the right place to ask any question and get an answer. The easiest way to get started with...
10645
mickmkelly
Jun 9, 2012 10:33 am
Epoxy will last about 6 months with the lids on tight and kept at room temperature, after that the epoxy starts to break down at the molecular level and you...
10646
Bdale Garbee
bdalegarbee
Jun 9, 2012 7:10 pm
henry said that big motors in min. dia gets hot and im still lost in ... Hi Sam! Just to make sure you aren't missing a trick, let me point out that even if...
10647
mickmkelly
Jun 10, 2012 1:04 pm
It Been a long time since I posted a welcome post. Those who have read it a hundred times just be=are with it. I truly would like to take this time to welcome...
10648
Troy Stanton
stantonjtroy...
Jun 10, 2012 4:11 pm
Thanks, I hope to pick up what I can and contribute where I can. I work in an aerospace composites shop doing fabrication, tooling and finishing work. I look...
10649
Mike Riss
black_magic_...
Jun 11, 2012 5:00 am
Denis, Sometimes pictures -- or in this case, video(s) -- are worth a thousand words. Check out post # 10240. Mike ... From: Denis <denismeans@...> ...
10650
sam smith
a_prince_for...
Jun 11, 2012 5:34 am
just a reminder fg dust is bad, cf dust is deadly. epoxy is bad stuff to so what ever you try make sure you follow the safety regs  darn im sounding like my...
10651
sam smith
a_prince_for...
Jun 11, 2012 6:05 am
gray only problem with the phenolic is getting it wet. ive should have said that it might need to be water proof to. got a great big pond by one of the fields...
10652
sam smith
a_prince_for...
Jun 11, 2012 7:29 am
thanks bdale one of the things i am stuck on is the long burn motors. ive learned that they will get hot enough to weaken epoxy mostly after some time for it...
10653
mickmkelly
Jun 11, 2012 7:59 am
Gery, I used was to measure the length of the motor, and then take half that number. Next before I start my lay-up I would cut out that length of the first...
10654
sam smith
a_prince_for...
Jun 11, 2012 5:00 pm
really good idea ty mick Gerry ________________________________ From: mickmkelly <mickkelly25@...> To: CompositeRockets@yahoogroups.com Sent: Monday,...
10656
Denis
denismeans
Jun 12, 2012 3:50 pm
Thank you all for your great inputs. I'm going to try to see what I can come up with something small, probably 24mm as I have lots of material around for this...
10657
mickmkelly
Jul 2, 2012 10:15 pm
I see we have had several new members new to composites join our group. I just want to encourage you to ask any questions you might have, no matter how...
10658
Gray
graydontranq...
Jul 9, 2012 7:44 pm
In case anyone is interested in the final results of this vacuum bagged fincan construction previously detailed in the photo album "Vacuum Bagged FinCan".... ...
