Hello. Wasn't there a type of high-heat resin available to use which can withstand higher temperatures ? I was thinking of using a resin as a mold material...
2666
Miracle Castings Inc.
miracle-castings@xx.x...
Jun 1, 1999 2:13 pm
Hi Katharine! I don't have any experience with large sculptures like you are talking about, but I would suggest you contact Smooth-On Inc. (See their web...
2667
DErd534933@xx.xxx
Jun 1, 1999 5:07 pm
Hi All, I have routinely heated epoxy to 200 degrees or more to accelerate the cure of the 24 hour stuff to about 1/2 hour. I'm pretty sure epoxy could be...
2668
Duckham
cmdisa@xxxxxx.xxx
Jun 1, 1999 7:50 pm
HI all, I am a HO scale modeller who also manufactures as a side line thing. Most of the products are in etched brass but does also include a bit of Urethane ...
2669
Jeff Bissonnette
jeffnjenbiss@xxxxxxxx...
Jun 1, 1999 9:46 pm
... Craig, I'm sorry that I cannot help you with your inquiry, but I noticed that you produce model train items, particularly etched brass components... I'm ...
2670
Elmer McKay
emckay70@xxx.xxxx
Jun 1, 1999 10:53 pm
... Hi Eugene, I am trying to work the plastic injection angle using epoxy molds, and it may have been my posting you saw. I have just found a company who...
2671
voyageri
voyageri@xxxx.xx.xxx
Jun 2, 1999 2:37 am
I just hooked up my newly bought used air conditionning vacuum pump and equipment that I gathered and run a test with clear-flex 50 from smooth-on. Well I'm...
2672
lawrence jackman
ljack70117@xxxxxxxxx....
Jun 2, 1999 4:08 am
One: you probably need 28 or 29 in vacuum Two: NEVER pull a vacuum for more than 60 seconds. you must remember that you are not only degassing (or deairing)...
2673
Tony Whittaker
tony.whittaker@xxx.xx...
Jun 2, 1999 12:11 pm
The best way to harden super sculpey when customising small areas is to use a hot air gun, however, I wouldnt go down this route !! I have always used a 2 part...
2674
Miracle Castings Inc.
miracle-castings@xx.x...
Jun 2, 1999 1:10 pm
Hi! You definitely need a good seal for the lid of your pot, or pulling a high vacuum is next to impossible. I would say that 22 Hg is too low to be ...
2675
Miracle Castings Inc.
miracle-castings@xx.x...
Jun 2, 1999 1:15 pm
Hi! I'm curious about the comments on not vacuuming for more than a minute. I do it all the time with no ill effects whatsoever. I've never heard this type of...
2676
Miracle Castings Inc.
miracle-castings@xx.x...
Jun 2, 1999 1:21 pm
I have used Milliput numerous times with excellent results. It is easily workable with water, and dries to a very hard consistency. There are also different...
2677
Tom Banwell
Tom@xxxxxxxx.xxxx
Jun 2, 1999 3:01 pm
... This is nonsense. You need to deair your RTV for as long as is needed, which will depend on the power of your vacuum motor and the size of your vessel. You...
2678
lawrence jackman
ljack70117@xxxxxxxxx....
Jun 2, 1999 4:34 pm
I attended a lost wax class and they said no more than 60 seconds and 45 seconds is better. If you take a look at the investment chart you will notice a 10 min...
2679
lawrence jackman
ljack70117@xxxxxxxxx....
Jun 2, 1999 4:41 pm
You will make SOME GASES disappear from your RTV. Contact Dow, Swest or Kerr they will tell you the same thing. After reaching full vacuum at 29 ins don't ...
2680
Miracle Castings Inc.
miracle-castings@xx.x...
Jun 2, 1999 5:20 pm
Hi again! Actually, I can understand your statement better now that you mention 60 seconds "once you reach full vacuum". This does make sense. The comment...
2681
Miracle Castings Inc.
miracle-castings@xx.x...
Jun 2, 1999 5:25 pm
Hi All! I was just looking at Dow Corning's web page on mold making, and thought I'd pass the URL on to everyone in case you want to look at it. The address...
2682
Tom Banwell
Tom@xxxxxxxx.xxxx
Jun 2, 1999 9:11 pm
... And it makes sense to me now, too. I called David Job, the tech guy at Silicones, Inc, and he said you can let it go 3 to 5 minutes after it has collapsed....
2683
Steve Hofmann
stevehofmann@xxxxxxxx...
Jun 2, 1999 10:46 pm
unsubscribe...
2684
lawrence jackman
ljack70117@xxxxxxxxx....
Jun 2, 1999 11:07 pm
All the air in any thing that you are going to get out will come out in the first 45 to 60 seconds. Any thing is gases and chemicals from what ever you are ...
2685
lawrence jackman
ljack70117@xxxxxxxxx....
Jun 2, 1999 11:22 pm
As soon as you reach 28 or 29 inches all you need to degas is 45 to 60 seconds. If your pumps takes longer than 30 seconds to reach the 29 inches it is either ...
2686
lawrence jackman
ljack70117@xxxxxxxxx....
Jun 2, 1999 11:26 pm
Yes. Swest, and others teach this in there classes. you do not know that ther is no ill effects. It would take a chemist to tell you what is missing after 60 ...
2687
lawrence jackman
ljack70117@xxxxxxxxx....
Jun 2, 1999 11:33 pm
You have a very big chamber or a very poor pump. I have a reed oil pump that will reach 29 inches in 20 seconds using an 18 inch bell jar. It has to be fast if...
2688
Alumilite
alumilite@...
Jun 3, 1999 3:46 pm
As far as vacuuming your silicone, I haven't seen any ill affects from an extended vacuum. However, if you plan on pulling a vacuum on your resin, it is...
2689
Alan Shinn
alshinn@...
Jun 3, 1999 4:10 pm
The discussion regarding the time to properly degas seems to be getting rather heated. Being as this is not sci.casting.pro but rather a list for folks at all...
2690
lawrence jackman
ljack70117@...
Jun 3, 1999 4:10 pm
I apologize for some of the words I used. But I do find a great different between good professional tools and cheap just get by tools. And if you want the best...
2691
lawrence jackman
ljack70117@...
Jun 3, 1999 4:14 pm
Also one more thought. In every thing I have done in my life I have followed the advise of the Professionals. I do experiment and learn more. But when it comes...
2692
Tom Banwell
Tom@...
Jun 3, 1999 4:55 pm
... I apologize to Larry for using the word "nonsense". I believe that we all agree now that you don't want to keep the vacuum going after the 29" and collapse...
2693
Rick Blanchard
bdesign@...
Jun 3, 1999 5:14 pm
lawrence, ... It's true in every facet of life so why call a Ford mickeymouse if you drive a Porsche? I'd rather you explained what better tools get you and...
2694
Miracle Castings Inc.
miracle-castings@...
Jun 3, 1999 5:39 pm
Hi All! Just a comment on the subject of tools. It's certainly true in any area of expertise that good tools make a huge difference in ease of use, and the...
